What’s Ahead for Rosetta – ‘Finding a Landing Strip’ on Bizarre Comet 67P/Churyumov-Gerasimenko

NAVCAM image taken by Rosetta on 5 August 2014 from a distance of about 145 km from comet 67P/Churyumov-Gerasimenko. Image has been rotated 180 degrees. Credit: ESA/Rosetta/NAVCAM

Where would you land here?
Newly released NAVCAM image taken by Rosetta on 5 August 2014 from a distance of about 145 km from comet 67P/Churyumov-Gerasimenko. Image has been rotated 180 degrees. Credit: ESA/Rosetta/NAVCAM[/caption]

Following the flawless and history making arrival of the European Space Agency’s (ESA) Rosetta spacecraft at its long sought destination of Comet 67P/Churyumov-Gerasimenko on Wednesday, Aug. 6, the goal of conducting ground breaking science at this utterly alien and bizarre icy wanderer that looks like a ‘Scientific Disneyland’ can actually begin.

Rosetta is the first spacecraft in history to rendezvous with a comet and enter orbit – after a more than 10 year chase of 6.4 billion kilometers (4 Billion miles) along a highly complex trajectory from Earth. The arrival event was broadcast live from mission control at ESA’s spacecraft operations centre (ESOC) in Darmstadt, Germany. Read my complete arrival story – here.

So what’s ahead for Rosetta? Another audacious and history making event – Landing on the comet!

A top priority task is also another highly complex task – ‘Finding a landing strip’ on the bizarre world of Comet 67P for the piggybacked Philae comet lander equipped with 10 science instruments.

“The challenge ahead is to map the surface and find a landing strip,” said Andrea Accomazzo, ESA Rosetta Spacecraft Operations Manager, at the Aug. 6 ESA webcast.

That will be no easy task based on the spectacular imagery captured by the OSIRIS high resolution science camera and the Navcam camera that has revealed an utterly wacky and incredibly differentiated world like none other we have ever visited or expected when the mission was conceived.

Magnificently detailed new navcam images were released by ESA today, Aug, 7, streaming back to Earth across some 405 million kilometers (250 million miles) of interplanetary space – see above and below.

The team will have its hand full trying to find a safe spot for touchdown.

“We now see lots of structure and details. Lots of topography is visible on the surface,” said Holger Sierks, principal investigator for Rosetta’s OSIRIS camera from the Max Planck Institute for Solar System Research in Gottingen, Germany, during the webcast.

“There is a big depression and 150 meter high cliffs, rubble piles, and also we see smooth areas and plains. It’s really fantastic”

“We see a village of house size boulders. Some about 10 meters in size and bigger and they vary in brightness. And some with sharp edges. We don’t know their composition yet,” explained Sierks.

NAVCAM image taken on 6 August 2014 from a distance of about 96 km from comet 67P/Churyumov-Gerasimenko.   Credit: ESA/Rosetta/NAVCAM
Newly released NAVCAM image taken on 6 August 2014 from a distance of about 96 km from comet 67P/Churyumov-Gerasimenko. Credit: ESA/Rosetta/NAVCAM

The key to finding a safe landing site for Philae will be quickly conducting a global comet mapping campaign with OSIRIS, Navcam and the remaining suite of 11 science instruments to provide a detailed scientific study of the physical characteristics and chemical composition of the surface.

They also need to determine which areas are hard or soft.

Holger Sierks, OSIRIS principal investigator, discuss spectacular hi res comet images returned so far by Rosetta during the Aug. 6 ESA webcast from mission control at ESOC, Darmstadt, Germany. Credit: Roland Keller
Holger Sierks, OSIRIS principal investigator, discusses spectacular hi res comet images returned so far by Rosetta during the Aug. 6 ESA webcast from mission control at ESOC, Darmstadt, Germany. Credit: Roland Keller

“Our first clear views of the comet have given us plenty to think about,” says Matt Taylor, ESA’s Rosetta project scientist.

“Is this double-lobed structure built from two separate comets that came together in the Solar System’s history, or is it one comet that has eroded dramatically and asymmetrically over time? Rosetta, by design, is in the best place to study one of these unique objects.”

The image of Comet 67P/Churyumov-Gerasimenko was taken by Rosetta’s OSIRIS narrow-angle camera on 3 August 2014 from a distance of 285 km.   Credits: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA
The image of Comet 67P/Churyumov-Gerasimenko was taken by Rosetta’s OSIRIS narrow-angle camera on 3 August 2014 from a distance of 285 km. Credits: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA

Yesterday’s (Aug. 6) critical final thruster firing placed the 1.3 Billion euro robotic emissary from Earth into a triangular shaped orbit about 100 kilometers (62 miles) above and in front of the comet’s incredibly varied surface.

Therefore the initial mapping will be conducted from the 100 km (62 mi.) standoff distance.

Since the landing is currently targeted for November 11, 2014, in barely three months time there is not a moment to waste.

“Over the next few months, in addition to characterizing the comet nucleus and setting the bar for the rest of the mission, we will begin final preparations for another space history first: landing on a comet,” says Taylor.

The team will identify up to five possible landing sites by late August and expect to choose the primary site by mid-September.

Then the team has to plan and build the programming and maneuvers for the final timeline to implement the sequence of events leading to the nailbiting landing.

With Rosetta now travelling in a series of 100 kilometer-long (62 mile-long) triangular arcs in front of the comet lasting about 3 days each, it will also be firing thrusters at each apex.

After catching up with the comet Rosetta will slightly overtake and enter orbit from the ‘front’ of the comet as both the spacecraft and 67P/CG move along their orbits around the Sun. Rosetta will carry out a complex series of manoeuvres to reduce the separation between the spacecraft and comet from around 100 km to 25-30 km. From this close orbit, detailed mapping will allow scientists to determine the landing site for the mission’s Philae lander. Immediately prior to the deployment of Philae in November, Rosetta will come to within just 2.5 km of the comet’s nucleus.  This animation is not to scale; Rosetta’s solar arrays span 32 m, and the comet is approximately 4 km wide.  Credit: ESA–C. Carreau
After catching up with the comet Rosetta will slightly overtake and enter orbit from the ‘front’ of the comet as both the spacecraft and 67P/CG move along their orbits around the Sun. Rosetta will carry out a complex series of manoeuvres to reduce the separation between the spacecraft and comet from around 100 km to 25-30 km. From this close orbit, detailed mapping will allow scientists to determine the landing site for the mission’s Philae lander. Immediately prior to the deployment of Philae in November, Rosetta will come to within just 2.5 km of the comet’s nucleus. This animation is not to scale; Rosetta’s solar arrays span 32 m, and the comet is approximately 4 km wide. Credit: ESA–C. Carreau

But it will also gradually edge closer over the next six weeks to about 50 km distance and then even closer to lower Rosetta’s altitude about Comet 67P until the spacecraft is captured by the comet’s gravity.

In November 2014, Rosetta will attempt another historic first when it deploys the Philae science lander from an altitude of just about 2.5 kilometers above the comet for the first ever attempt to land on a comet’s nucleus.

The three-legged lander will fire harpoons and use ice screws to anchor itself to the 4 kilometer (2.5 mile) wide comet’s surface. Philae will collect stereo and panoramic images and also drill into and sample its incredibly varied surface.

How will Philae land?

Stefan Ulamec, Philae Lander Manager from the German Aerospace Center (DLR) talked about the challenges of landing in a low gravity environment during the ESA webcast.

“The touchdown will be at a speed of just 1 m/s,” Ulamec explained. “This is like walking and bouncing against a wall.”

Details in an upcoming story!

Why study comets?

Comets are leftover remnants from the formation of the solar system. Scientists believe they delivered a vast quantity of water to Earth. They may have also seeded Earth with organic molecules.

ESA’s Rosetta spacecraft on final approach to Comet 67P/Churyumov-Gerasimenko in early August 2014. This collage of navcam imagery from Rosetta was taken on Aug. 1, 2, 3 and 4 from distances of 1026 km, 500 km, 300 km and 234 km. Not to scale.  Credit: ESA/Rosetta/NAVCAM - Collage/Processing: Marco Di Lorenzo/Ken Kremer- kenkremer.com
ESA’s Rosetta spacecraft on final approach to Comet 67P/Churyumov-Gerasimenko in early August 2014. This collage of navcam imagery from Rosetta was taken on Aug. 1, 2, 3 and 4 from distances of 1026 km, 500 km, 300 km and 234 km. Not to scale. Credit: ESA/Rosetta/NAVCAM – Collage/Processing: Marco Di Lorenzo/Ken Kremer- kenkremer.com

Stay tuned here for Ken’s continuing Rosetta, Curiosity, Opportunity, Orion, SpaceX, Boeing, Orbital Sciences, commercial space, MAVEN, MOM, Mars and more Earth and Planetary science and human spaceflight news.

Ken Kremer

…….

Read my Rosetta series here:

Rosetta Arrives at ‘Scientific Disneyland’ for Ambitious Study of Comet 67P/Churyumov-Gerasimenko after 10 Year Voyage

Rosetta on Final Approach to Historic Comet Rendezvous – Watch Live Here

Rosetta Probe Swoops Closer to Comet Destination than ISS is to Earth and Reveals Exquisite Views

Rosetta Orbiter less than 500 Kilometers from Comet 67P Following Penultimate Trajectory Burn

Rosetta Closing in on Comet 67P/Churyumov-Gerasimenko after Decade Long Chase

ESA’s Rosetta Spacecraft nears final approach to Comet 67P/Churyumov-Gerasimenko in late July 2014. This collage of imagery from Rosetta combines Navcam camera images at right taken nearing final approach from July 25 (3000 km distant) to July 31, 2014 (1327 km distant), with OSIRIS wide angle camera image at left of comet’s expanding coma cloud on July 25. Images to scale and contrast enhanced to show further detail. Credit: ESA/Rosetta/NAVCAM/OSIRIS/MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA   Collage/Processing: Marco Di Lorenzo/Ken Kremer
ESA’s Rosetta Spacecraft nears final approach to Comet 67P/Churyumov-Gerasimenko in late July 2014. This collage of imagery from Rosetta combines Navcam camera images at right taken nearing final approach from July 25 (3000 km distant) to July 31, 2014 (1327 km distant), with OSIRIS wide angle camera image at left of comet’s expanding coma cloud on July 25. Images to scale and contrast enhanced to show further detail. Credit: ESA/Rosetta/NAVCAM/OSIRIS/MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA Collage/Processing: Marco Di Lorenzo/Ken Kremer

Rosetta Arrives at ‘Scientific Disneyland’ for Ambitious Study of Comet 67P/Churyumov-Gerasimenko after 10 Year Voyage

The image of Comet 67P/Churyumov-Gerasimenko was taken by Rosetta’s OSIRIS narrow-angle camera on 3 August 2014 from a distance of 285 km. Credits: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA

The image of Comet 67P/Churyumov-Gerasimenko was taken by Rosetta’s OSIRIS narrow-angle camera on 3 August 2014 from a distance of 285 km. Credits: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA
Story updated[/caption]

“We’re at the comet! Yes,” exclaimed Rosetta Spacecraft Operations Manager Sylvain Lodiot, confirming the spacecraft’s historic arrival at Comet 67P/Churyumov-Gerasimenko during a live webcast this morning, Aug. 6, from mission control at ESA’s spacecraft operations centre (ESOC) in Darmstadt, Germany.

The European Space Agency’s (ESA) Rosetta comet hunter successfully reached its long sought destination after a flawless orbital thruster firing at 11 AM CEST to become the first spacecraft in history to rendezvous with a comet and enter orbit aimed at an ambitious long term quest to produce ground breaking science.

“Ten years we’ve been in the car waiting to get to scientific Disneyland and we haven’t even gotten out of the car yet and look at what’s outside the window,” Mark McCaughrean, senior scientific adviser to ESA’s Science Directorate, said during today’s webcast. “It’s just astonishing.”

“The really big question is where did we and the solar system we live in come from? How did water and the complex organic molecules that build up life get to this planet? Water and life. These are the questions that motivate everybody.”

“Rosetta is indeed the ‘rosetta stone’ that will unlock this treasure chest to all comets.”

Today’s rendezvous climaxed Rosetta’s decade long and 6.4 billion kilometers (4 Billion miles) hot pursuit through interplanetary space for a cosmic kiss with Comet 67P while speeding towards the inner Solar System at nearly 55,000 kilometers per hour.

The probe is sending back spectacular up close high resolution imagery of the mysterious binary, two lobed comet, merged at a bright band at the narrow neck of the celestial wanderer that looks like a ‘rubber ducky.’

“This is the best comet nucleus ever resolved in space with the sharpest ever views of the nucleus, with 5.5.meter pixel resolution,” said Holger Sierks, principal investigator for Rosetta’s OSIRIS camera from the Max Planck Institute for Solar System Research in Gottingen, Germany, during the webcast.

Back side view of Comet 67P/Churyumov-Gerasimenko was taken by Rosetta’s OSIRIS narrow-angle camera on 3 August 2014 from a distance of 285 km.   The image resolution is 5.3 metres/pixel. Credits: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA
Back side view of Comet 67P/Churyumov-Gerasimenko was taken by Rosetta’s OSIRIS narrow-angle camera on 3 August 2014 from a distance of 285 km. The image resolution is 5.3 metres/pixel. Credits: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA

“We now see lots of structure and details. Lots of topography is visible on the surface. We see the nucleus and outgassing activity. The outbursts are seen with overexposed images. It’s really fantastic”

“There is a big depression on the head and 150 meter high cliffs, rubble piles, and also we see smooth areas and plains. The neck is about 1000 meters deep and is a cool area. There is outgassing visible from the neck.”

“We see a village of house size boulders. Some about 10 meters in size and bigger they vary in brightness. And some with sharp edges. We don’t know their composition yet.”

“We don’t understand how its created yet. That’s what we’ll find out in coming months as we get closer.”

“Rosetta has arrived and will get even closer. We’ll get ten times the resolution compared to now.”

“The comet is a story about us. It will be the key in cometary science. Where did it form? What does it tell us about the water on Earth and the early solar system and where it come from?”

Following the blastoff on 2 March 2004 tucked inside the payload fairing of an Ariane 5 G+ rocket from Europe’s spaceport in Kourou, French Guiana, Rosetta traveled on a complex trajectory.

It conducted four gravity assist speed boosting slingshot maneuvers, three at Earth and one at Mars, to gain sufficient velocity to reach the comet, Lodiot explained.

The 1.3 Billion euro robotic emissary from Earth is now orbiting about 100 kilometers (62 miles) above the comet’s surface, some 405 million kilometers (250 million mi.) from Earth, about half way between the orbits of Jupiter and Mars.

The main event today, Aug. 6, was to complete an absolutely critical thruster firing which was the last of 10 orbit correction maneuvers (OCM’s). It started precisely on time at 11:00 AM CEST/09:00 GMT/5:00 AM EST, said Lodiot. The signal was one of the cleanest of the entire mission.

The orbital insertion engine firing dubbed the Close Approach Trajectory – Insertion (CATI) burn was scheduled to last about 6 minutes 26 seconds. Confirmation of a successful burn came some 28 minutes later.

“We’re at the comet! Yes,” Lodiot excitedly announced live whereupon the crowd of team members, dignitaries and journalists at ESOC erupted in cheers.

For the next 17 months, the probe will escort comet 67P as it loops around the Sun towards perihelion in August 2015 and then continue along on the outbound voyage towards Jupiter.

ESA’s incredibly bold mission will also deploy the three-legged piggybacked Philae lander to touch down and drill into and sample its incredibly varied surface a little over three months from now.

Together, Rosetta and Philae are equipped with a suite of 21 science instruments to conduct an unprecedented investigation to characterize the 4 km wide (2.5 mi.) comet and study how the pristine frozen body composed of ice and rock is transformed by the warmth of the Sun.

Comets are believed to have delivered a vast quantity of water to Earth. They may have also seeded Earth with organic molecules.

Close-up detail of comet 67P/Churyumov-Gerasimenko. The image was taken by Rosetta’s OSIRIS narrow-angle camera and downloaded today, 6 August. The image shows the comet’s ‘head’ at the left of the frame, which is casting shadow onto the ‘neck’ and ‘body’ to the right.  The image was taken from a distance of 120 km and the image resolution is 2.2 metres per pixel. Credit: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA
Close-up detail of comet 67P/Churyumov-Gerasimenko. The image was taken by Rosetta’s OSIRIS narrow-angle camera and downloaded today, 6 August. The image shows the comet’s ‘head’ at the left of the frame, which is casting shadow onto the ‘neck’ and ‘body’ to the right.
The image was taken from a distance of 120 km and the image resolution is 2.2 metres per pixel. Credit: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA

Rosetta and Philae will also search for organic molecules, nucleic acids and amino acids, the building blocks for life as we know it by sampling and analyzing the comets nucleus and coma cloud of gas and dust.

“The first coma sampling could happen as early as next week,” said Matt Taylor, ESA’s Rosetta project scientist on the webcast.

“Is this double-lobed structure built from two separate comets that came together in the Solar System’s history, or is it one comet that has eroded dramatically and asymmetrically over time? Rosetta, by design, is in the best place to study one of these unique objects.”

After thoroughly mapping the comet, the team will command Rosetta to move even lower to 50 km altitude and then even lower to 30 km and less.

The scientists and engineers will search for up to five possible landing sites for Philae to prepare for the touchdown in mid-November 2014.

“We want to characterize the nucleus so we can land in November,” said Taylor. “We will have a ringside along with the comet as it moves inwards to the sun and then further out.”

Comet 67P/Churyumov-Gerasimenko activity on 2 August 2014. The IMAGE was taken by Rosetta’s OSIRIS wide-angle camera from a distance of 550 km. The exposure time of the image was 330 seconds and the comet nucleus is saturated to bring out the detail of the comet activity. Note there is a ghost image to the right. The image resolution is 55 metres per pixel. Credits: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA
Comet 67P/Churyumov-Gerasimenko activity on 2 August 2014. The IMAGE was taken by Rosetta’s OSIRIS wide-angle camera from a distance of 550 km. The exposure time of the image was 330 seconds and the comet nucleus is saturated to bring out the detail of the comet activity. Note there is a ghost image to the right. The image resolution is 55 metres per pixel. Credits: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA

Studying comets will shed light on the history of water and life on Earth.

“We are going to places we have never been to before,” said Jean-Jacques Dordain, ESA’s Director General during the webcast.

“We want to get answers to questions to the origin to water and complex molecules on Earth. This opens up even more new questions than answers.”

ESA’s Rosetta spacecraft on final approach to Comet 67P/Churyumov-Gerasimenko in early August 2014. This collage of navcam imagery from Rosetta was taken on Aug. 1, 2, 3 and 4 from distances of 1026 km, 500 km, 300 km and 234 km. Not to scale.  Credit: ESA/Rosetta/NAVCAM - Collage/Processing: Marco Di Lorenzo/Ken Kremer- kenkremer.com
ESA’s Rosetta spacecraft on final approach to Comet 67P/Churyumov-Gerasimenko in early August 2014. This collage of navcam imagery from Rosetta was taken on Aug. 1, 2, 3 and 4 from distances of 1026 km, 500 km, 300 km and 234 km. Not to scale. Credit: ESA/Rosetta/NAVCAM – Collage/Processing: Marco Di Lorenzo/Ken Kremer- kenkremer.com

Watch for updates.

Stay tuned here for Ken’s continuing Rosetta, Curiosity, Opportunity, Orion, SpaceX, Boeing, Orbital Sciences, commercial space, MAVEN, MOM, Mars and more Earth and Planetary science and human spaceflight news.

Ken Kremer

……..

Read my Rosetta series here:

Rosetta on Final Approach to Historic Comet Rendezvous – Watch Live Here

Rosetta Probe Swoops Closer to Comet Destination than ISS is to Earth and Reveals Exquisite Views

Rosetta Orbiter less than 500 Kilometers from Comet 67P Following Penultimate Trajectory Burn


Rosetta Closing in on Comet 67P/Churyumov-Gerasimenko after Decade Long Chase

ESA’s Rosetta Spacecraft nears final approach to Comet 67P/Churyumov-Gerasimenko in late July 2014. This collage of imagery from Rosetta combines Navcam camera images at right taken nearing final approach from July 25 (3000 km distant) to July 31, 2014 (1327 km distant), with OSIRIS wide angle camera image at left of comet’s expanding coma cloud on July 25. Images to scale and contrast enhanced to show further detail. Credit: ESA/Rosetta/NAVCAM/OSIRIS/MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA   Collage/Processing: Marco Di Lorenzo/Ken Kremer
ESA’s Rosetta Spacecraft nears final approach to Comet 67P/Churyumov-Gerasimenko in late July 2014. This collage of imagery from Rosetta combines Navcam camera images at right taken nearing final approach from July 25 (3000 km distant) to July 31, 2014 (1327 km distant), with OSIRIS wide angle camera image at left of comet’s expanding coma cloud on July 25. Images to scale and contrast enhanced to show further detail. Credit: ESA/Rosetta/NAVCAM/OSIRIS/MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA Collage/Processing: Marco Di Lorenzo/Ken Kremer

The Latest Pictures From Mars Make Us Feel Spoiled

A HiRISE image called "steep north polar peripheral scarp." Credit: NASA/JPL/University of Arizona

Don’t you love it when close-up pictures come beaming to your computer from another planet? Below are some of the latest images from Mars taken by the High Resolution Imaging Science Experiment on the Mars Reconnaissance Orbiter.

And by the way, there’s a way for you to request where HiRISE will be pointing next.

All you need to go to this page (called HiWish) and leave a suggestion for where you’d like the spacecraft to look. For some tips on what to do:

The general consensus seems to be picking a spot that is not over-popular, and trying to find a spot that HiRISE has not looked at before or very frequently. Best of luck!

To see more HiRISE images from the latest release, check out this webpage.

A HiRISE image called "Nili Patera." Credit: NASA/JPL/University of Arizona
A HiRISE image called “Nili Patera.” Credit: NASA/JPL/University of Arizona
A HiRISE image called "scalloped surface in Utopia region." Credit: NASA/JPL/University of Arizona
A HiRISE image called “scalloped surface in Utopia region.” Credit: NASA/JPL/University of Arizona
A HiRISE image called "gullied crater wall." Credit: NASA/JPL/University of Arizona
A HiRISE image called “gullied crater wall.” Credit: NASA/JPL/University of Arizona
A HiRISE image called "active dune gullies in Kaiser crater." Credit: NASA/JPL/University of Arizona
A HiRISE image called “active dune gullies in Kaiser crater.” Credit: NASA/JPL/University of Arizona
A HiRISE image called "dark-capped plain and hills in western Arabia region intercrater terrain." Credit: NASA/JPL/University of Arizona
A HiRISE image called “dark-capped plain and hills in western Arabia region intercrater terrain.” Credit: NASA/JPL/University of Arizona

Rosetta on Final Approach to Historic Comet Rendezvous – Watch Live Here

ESA’s Rosetta spacecraft on final approach to Comet 67P/Churyumov-Gerasimenko in early August 2014. This collage of navcam imagery from Rosetta was taken on Aug. 1, 2, 3 and 4 from distances of 1026 km, 500 km, 300 km and 234 km. Not to scale. Credit: ESA/Rosetta/NAVCAM - Collage/Processing: Marco Di Lorenzo/Ken Kremer- kenkremer.com

ESA’s Rosetta spacecraft on final approach to Comet 67P/Churyumov-Gerasimenko in early August 2014. This collage of navcam imagery from Rosetta was taken on Aug. 1, 2, 3 and 4 from distances of 1026 km, 500 km, 300 km and 234 km. Not to scale. Credit: ESA/Rosetta/NAVCAM – Collage/Processing: Marco Di Lorenzo/Ken Kremer- kenkremer.com
Watch ESA’s Live Webcast here on Aug. 6 starting at 4 AM EDT/ 8 AM GMT[/caption]

After a decade long chase of 6.4 billion kilometers (4 Billion miles) through interplanetary space the European Space Agency’s (ESA) Rosetta spacecraft is now on final approach for its historic rendezvous with its target comet 67P scheduled for Wednesday morning, Aug. 6. some half a billion kilometers from the Sun. See online webcast below.

Rosetta arrives at Comet 67P/Churyumov-Gerasimenko in less than 12 hours and is currently less than 200 kilometers away.

You can watch a live streaming webcast of Rosetta’s Aug. 6 orbital arrival here, starting at 10:00 a.m. CEST/8 a.m. GMT/4 a.m. EDT/1 a.m. PDT via a transmission from ESA’s spacecraft operations centre in Darmstadt, Germany.

Rosetta is the first mission in history to rendezvous with a comet and enter orbit around it. The probe will then escort comet 67P as it loops around the Sun, as well as deploy the piggybacked Philae lander to its uneven surface.

Orbit entry takes place after the probe initiates the last of 10 orbit correction maneuvers (OCM’s) on Aug. 6 starting at 11:00 CEST/09:00 GMT.

The thruster firing, dubbed the Close Approach Trajectory – Insertion (CATI) burn, is scheduled to last about 6 minutes 26 seconds. Engineers transmitted the commands last night, Aug. 4.

CATI will place the 1.3 Billion Euro Rosetta into an initial orbit at a distance of about 100 kilometers (62 miles).

Since the one way signal time is 22 min 29 sec, it will take that long before engineers can confirm the success of the CATI thruster firing.

As engineers at ESOC mission control carefully navigate Rosetta ever closer, the probe has been capturing spectacular imagery showing rocks, gravel and tiny crater like features on its craggily surface with alternating smooth and rough terrain and deposits of water ice.

See above and below our collages (created by Marco Di Lorenzo & Ken Kremer) of navcam camera approach images of the comet’s two lobed nucleus captured over the past week and a half. Another shows an OSIRIS camera image of the expanding coma cloud of water and dust.

ESA’s Rosetta Spacecraft nears final approach to Comet 67P/Churyumov-Gerasimenko in late July 2014. This collage of imagery from Rosetta combines Navcam camera images at right taken nearing final approach from July 25 (3000 km distant) to July 31, 2014 (1327 km distant), with OSIRIS wide angle camera image at left of comet’s expanding coma cloud on July 25. Images to scale and contrast enhanced to show further detail. Credit: ESA/Rosetta/NAVCAM/OSIRIS/MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA   Collage/Processing: Marco Di Lorenzo/Ken Kremer
ESA’s Rosetta Spacecraft nears final approach to Comet 67P/Churyumov-Gerasimenko in late July 2014. This collage of imagery from Rosetta combines Navcam camera images at right taken nearing final approach from July 25 (3000 km distant) to July 31, 2014 (1327 km distant), with OSIRIS wide angle camera image at left of comet’s expanding coma cloud on July 25. Images to scale and contrast enhanced to show further detail. Credit: ESA/Rosetta/NAVCAM/OSIRIS/MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA Collage/Processing: Marco Di Lorenzo/Ken Kremer

The up close imagery revealed that the mysterious comet looks like a ‘rubber ducky’ and is comprised of two lobes merged at a bright band at the narrow neck in between.

Rosetta’s navcam camera has been commanded to capture daily images of the comet that rotates around once every 12.4 hours.

After orbital insertion on Aug. 6, Rosetta will initially be travelling in a series of 100 kilometer-long (62 mile-long) triangular arcs in front of the comet while firing thrusters at each apex. Further engine firings will gradually lower Rosetta’s altitude about Comet 67P until the spacecraft is captured by the comet’s gravity.

ESA’s Rosetta Spacecraft on final approach to Comet 67P/Churyumov-Gerasimenko in early August 2014. This collage of navcam imagery from Rosetta was taken on Aug. 1, 2 and 3 from distances of 1026 km, 500 km and 300 km. Not to scale.  Credit: ESA/Rosetta/NAVCAM   Collage/Processing: Ken Kremer/Marco Di Lorenzo
ESA’s Rosetta Spacecraft on final approach to Comet 67P/Churyumov-Gerasimenko in early August 2014. This collage of navcam imagery from Rosetta was taken on Aug. 1, 2 and 3 from distances of 1026 km, 500 km and 300 km. Not to scale. Credit: ESA/Rosetta/NAVCAM Collage/Processing: Ken Kremer/Marco Di Lorenzo

Rosetta will continue in orbit at comet 67P for a 17 month long study.

In November 2014, Rosetta will attempt another historic first when it deploys the piggybacked Philae science lander from an altitude of just about 2.5 kilometers above the comet for the first ever attempt to land on a comet’s nucleus. The lander will fire harpoons to anchor itself to the 4 kilometer (2.5 mile) wide comet’s surface.

Together, Rosetta and Philae will investigate how the pristine frozen comet composed of ice and rock is transformed by the warmth of the Sun. They will also search for organic molecules, nucleic acids and amino acids, the building blocks for life as we know it.

Rosetta was launched on 2 March 2004 on an Ariane 5 G+ rocket from Europe’s spaceport in Kourou, French Guiana.

Stay tuned here for Ken’s continuing Rosetta, Curiosity, Opportunity, Orion, SpaceX, Boeing, Orbital Sciences, commercial space, MAVEN, MOM, Mars and more Earth and Planetary science and human spaceflight news.

Ken Kremer

Rocket Replay: Watch Europe’s Last Space Station Automated Transfer Vehicle Soar

Europe's last automated transfer vehicle, Georges Lemaitre, lifts off from French Guiana en route to the International Space Station July 29, 2014. Credit: ESA–S. Corvaja, 2014

The last of Europe’s five automated transfer vehicles made a flawless launch to orbit yesterday (July 30). So far, all is going well with ATV Georges Lemaître as it brings a load of cargo to the International Space Station. You can watch the launch above. The ship is not only acting as a freighter, but a testbed for technology to help with docking and re-entry.

“It is with great pride that we saw the fifth successful launch of this beautiful spacecraft,” stated Thomas Reiter, the European Space Agency’s director of human spaceflight and operations, in a press release. “But the adventure doesn’t end here. ATV knowhow and technology will fly again to space as early as 2017, powering NASA’s Orion spacecraft with the European Service Module, ushering in the next generation of space exploration.”

It will take until Aug. 12 for the ATV to make its way to the space station. On its way, the vehicle will do a flyaround to test a laser infrared imaging sensor that could help future space vehicles dock with objects that don’t have docking ports.

Then it will stick on the space station for up to six months before making a planned re-entry, full of trash. In a first for Europe, how the ship breaks up will be carefully tracked to inform the design of future space vehicles that could survive re-entry. By the way, ESA has a stunning photo gallery of the rocket’s liftoff here, but we put a couple of samples below.

The Ariane 5 rocket carrying Europe's last automated transfer vehicle blasts off from French Guiana July 29, 2014. Credit: ESA-S. Corvaja
The Ariane 5 rocket carrying Europe’s last automated transfer vehicle blasts off from French Guiana July 29, 2014. Credit: ESA-S. Corvaja

NASA’s First Space-Tweeting Astronaut And ‘Big Bang Theory’ Guest Flies To A New Position

Astronaut Mike Massimino on a spacewalk during shuttle mission STS-109 in March 2002. Credit: NASA

The first astronaut who tweeted from space is leaving NASA, the agency announced yesterday. Mike Massimino (best known to his 1.29 million followers as @astro_mike) — and also one of several astronauts to repair the Hubble Space Telescope — will now bring his skills to a full-time position with Columbia University in New York.

“Mike embraced the opportunity to engage with the public in new ways and set the stage for more space explorers to be able to share their mission experience directly with people around the globe,” stated Bob Behnken, NASA’s chief of the astronaut office at Johnson Space Center in Houston.

“We wish him well in his new role fostering the dreams and innovations of students just beginning their career paths,” he said.

Massimino found time to embrace Twitter, then a new technology to NASA, during the busy STS-125 mission that was the final repair mission for the Hubble Space Telescope in 2009. Here’s the first tweet from space:

Following his social media activities in space, which received a great deal of publicity at the time, Massimino appeared several times on the CBS comedy “The Big Bang Theory” as a fictionalized version of himself.  He also was prominently featured in the IMAX film Hubble 3D in 2010, which in part featured the spacewalking missions to repair the iconic NASA telescope.

Lately, Massimino’s outreach activities also included hosting the regular “ISS Mailbag” YouTube segment with fellow astronaut Don Pettit (@astro_pettit).

While the astronaut has not yet made a statement on Twitter, NASA paid tribute to him on its own Twitter account, as did others:

Book Review: Neil Armstrong – A Life of Flight by Jay Barbree

Neil Armstrong - A Life of Flight; by Jay Barbree

“Neil Armstrong – A Life of Flight” is a thoroughly enjoyable new biography about the first human to set foot on the Moon on NASA’s Apollo 11 mission written with gusto by Emmy winning NBC News space correspondent Jay Barbree.

Jay Barbee is a veteran NBC News reporter who has covered America’s manned space program from the start. And he has the distinction of being the only reporter to cover every single American manned space launch – all 166 from Alan Shepard in 1961 to STS-135 in 2011 – from his home base at the Kennedy Space Center in Florida allowing him to draw on a wealth of eyewitness experiences and inside contacts.

The book’s publication coincides with the 45th anniversary of the Flight of Apollo 11 on America’s first manned moon landing mission in July 1969 by the three man crew comprising Commander Neil Armstrong, fellow moonwalker and Lunar Module Pilot Buzz Aldrin and Command Module pilot Michael Collins.

It’s a meticulously researched book over five decades in the making and based on personal interviews, notes, meetings, remembrances, behind the scenes visits, launches and more between Neil Armstrong and his trusted friend Jay Barbree as well as hordes more officials and astronauts key to achieving NASA’s spaceflight goals.

He won that trust because the astronauts and others trusted that he would get the story right and never betray confidences, Jay told me in an interview about the book.

“This is really Neil’s book. And it’s as accurate as possible. I will never reveal something Neil told me in confidence. But there is far more in this book about Neil than he would have liked.”

Jay Barbree and Neil Armstrong enjoy dinner with America’s first in orbit, John Glenn, who is performing standup comedy out of the picture. Courtesy:  Jay Barbee. See  Jay Barbree and Neil Armstrong enjoy dinner with America’s first in orbit, John Glenn, who is performing standup comedy out of the picture. Courtesy:  Jay Barbree. See  p. XIX
Jay Barbree and Neil Armstrong enjoy dinner with America’s first in orbit, John Glenn, who is performing standup comedy out of the picture. Courtesy: Jay Barbree. See p. XIX

There is a six page list of acknowledgments and the forward is written by no less than John Glenn – the first American to orbit the Earth in 1962.

Barbree is a master story teller who amply illustrates why NASA felt Armstrong was the best candidate to be 1st Man on the Moon based on his extraordinary intellect, piloting skills, and collected coolness and clear thinking under extraordinary pressure.

Armstrong also always shied away from publicity and bringing attention to himself, Barbree told me.

“Neil did not think he was any more important than anyone else. Neil wanted to do a book about a life of flight. But he wanted everyone else included.” And that’s exactly the format for the book – including Armstrong’s colleagues in words and pictures.

On July 21, NASA officially renamed a historic human spaceflight facility at the Kennedy Space Center in honor of Mission Commander Neil Armstrong – read my story here.

At the Kennedy Space Center in Florida on July 21, 2014, NASA officials and Apollo astronauts have a group portrait taken in front of the refurbished Operations and Checkout Building, newly named for Apollo 11 astronaut Neil Armstrong, the first person to set foot on the moon. From left are NASA Administrator Charles Bolden, Apollo astronauts Mike Collins, Buzz Aldrin and Jim Lovell, and Center Director Robert Cabana. The visit of the former astronauts was part of NASA's 45th anniversary celebration of the Apollo 11 moon landing. The building's high bay is being used to support the agency's new Orion spacecraft, which will lift off atop the Space Launch System rocket. Photo credit: NASA/Kevin O'Connell
At the Kennedy Space Center in Florida on July 21, 2014, NASA officials and Apollo astronauts have a group portrait taken in front of the refurbished Operations and Checkout Building, newly named for Apollo 11 astronaut Neil Armstrong, the first person to set foot on the moon. From left are NASA Administrator Charles Bolden, Apollo astronauts Mike Collins, Buzz Aldrin and Jim Lovell, and Center Director Robert Cabana. The visit of the former astronauts was part of NASA’s 45th anniversary celebration of the Apollo 11 moon landing. The building’s high bay is being used to support the agency’s new Orion spacecraft, which will lift off atop the Space Launch System rocket. Photo credit: NASA/Kevin O’Connell

Barbree details Armstrong’s lifetime of flight experiences that led to the ultimate Moon landing moment; starting with his early experiences as a Korean war combat pilot and bailing out of a crippled Panther F9F fighter plane, flying the X-15 to an altitude of 39 miles and the edge of space as a NASA test pilot, his selection as a member of the second group of astronauts on September 17, 1962, his maiden space mission on Gemini 8 which suddenly went out of control and threatened the crews lives, and finally the landing on the Sea of Tranquility with only 30 seconds of fuel remaining.

“Neil Armstrong – A Life of Flight” is a book for anyone interested in learning the nitty gritty inside details starting from the founding of America’s space effort, the trials, tribulations and triumphs of the earlier Mercury and Gemini manned programs, the terrible tragedy of the Apollo 1 fire and death of three brave Americans – Gus Grissom, Ed White and Roger Chaffee – and how all this swirl lead up to America’s determined and miraculous effort recounting how we got to the Moon. Go elsewhere for gossip.

This hefty 350 page volume is absolutely chock full of details including copious quotes on virtually every page. So much so that Barbree brings the along reader for what seems like a firsthand account. It’s as though he were a fly in the room listening in on history being made and transcribing it second by second or as an actual crew member riding along himself and reporting ultimately from aboard Apollo 11 and the Moon’s desolate surface.

On the Lunar Surface – Apollo 11 astronauts trained on Earth to take individual photographs in succession in order to create a series of frames that could be assembled into panoramic images. This frame from fellow astronaut Buzz Aldrin’s panorama of the Apollo 11 landing site is the only good picture of mission commander Neil Armstrong on the lunar surface. Credit: NASA
On the Lunar Surface – Apollo 11 astronauts trained on Earth to take individual photographs in succession in order to create a series of frames that could be assembled into panoramic images. This frame from fellow astronaut Buzz Aldrin’s panorama of the Apollo 11 landing site is the only good picture of mission commander Neil Armstrong on the lunar surface. Credit: NASA

Barbree does this by putting into context the full meaning and breadth of what’s happening on a moment by moment basis. Giving you the reader a complete understanding of what, why and how these history making events transpired as they did.

I found his background information endlessly illuminating and informative ! – precisely because it’s not merely a transcription of dialogue.

Concerning the mild controversy regarding Armstrong’s actual first words spoken from the lunar surface, here’s excerpts from how Jay tells the story on p. 263:

“He had thought about one statement he judged had meaning and fit the historic occasion …. Neil had not made up his mind … he was undecided until he was faced with the moment.

Armstrong then lifted his left boot .. and set it down in moon dust.

“That’s one small step for man,” Neil said with a momentary pause. “One giant leap for mankind.”

What most didn’t know was that Neil had meant to say, “That’s one small step for a man,” and that set off an argument for years to come. Had a beep in transmission wiped it from our ears or had Neil nervously skipped the word?

Knowing Neil’s struggles with public speaking, I believe the latter, and with all the excitement … I’ve never been convinced Neil knew himself for sure,” Barbree wrote.

Neil Armstrong and Buzz Aldrin plant the US flag on the Lunar Surface during 1st human moonwalk in history 45 years ago on July 20, 1969 during Apollo 1l mission. Credit: NASA
Neil Armstrong and Buzz Aldrin plant the US flag on the Lunar Surface during 1st human moonwalk in history 45 years ago on July 20, 1969 during Apollo 1l mission. Credit: NASA

Towards the books conclusion, he writes of Armstrong; “No greater man walked among us. No better man left us informed answers. Neil taught us how to take care of our Earth-Moon system.”

I also enjoyed towards the end of the book where Jay includes Neil’s disappointment that we haven’t ventured beyond Earth orbit in over 4 decades and includes Neil’s personal testimony to Congress so we learn the detail of Armstrong thoughts – in his own words.

“I am persuaded that a return to the moon would be the most productive path to expanding the human presence in the solar system.”

Jay also pinpoints why we haven’t returned to the Moon; “lack of vision for the future” by Congress and Presidents “have kept astronauts locked in Earth orbit.”

It’s been my privilege to get to know Jay during my own space reporting from the press site at the Kennedy Space Center and interview him about his magnificent new book.

Read Jay Barbree’s new 8 part series of 45th anniversary Apollo 11 stories at NBC News here:

Morning on the Moon: Apollo 11 Showed How Far We Could Go

Armstrong passed away unexpectedly at age 82 on August 25, 2012 due to complications from heart bypass surgery. Read my prior tribute articles: here and here

Despite Armstrong’s premature passing, Barbree told me he had completed all the interviews.

“There isn’t anything that comes to mind about Neil Armstrong that I didn’t get to ask him,” Barbree told me.

Read my 45th Apollo 11 anniversary articles here:

Apollo 11 Splashdown 45 Years Ago on July 24, 1969 Concludes 1st Moon Landing Mission – Gallery

Historic Human Spaceflight Facility at Kennedy Renamed in Honor of Neil Armstrong – 1st Man on the Moon


Apollo 11 Moon Landing 45 Years Ago on July 20, 1969: Relive the Moment! – With an Image Gallery and Watch the Restored EVA Here

Cygnus Commercial Resupply Ship ‘Janice Voss’ Berths to Space Station on 45th Apollo 11 Anniversary

Read my story about the deep sea recovery of the Apollo 11 first stage F-1 engines in 2013 – here.

Jay Barbree is on a book signing tour and you might be lucky to catch him at an event like a colleague of mine did at the Smithsonian National Air & Space Museum recently. See photo below.

Stay tuned here for Ken’s Earth & Planetary science and human spaceflight news.

Ken Kremer

Jay Barbree at “Neil Armstrong” book signing tour at the Smithsonian National Air & Space Museum. Credit: Mark Usciak
Jay Barbree at “Neil Armstrong” book signing tour at the Smithsonian National Air & Space Museum. Credit: Mark Usciak

Astronaut Spots Violence Over Gaza, Asks What Extraterrestrials Would Think

Expedition 40 astronaut Alexander Gerst took this photo of the Israel and Gaza regions in July 2014 while explosions took place below (which are not visible in the photo). Credit: Alexander Gerst/Twitter

From his perch aboard the International Space Station, Alexander Gerst took this photo this week and said he could spot explosions and rockets in the blackness below. The location made him realize things were grim: it was over the Gaza and Israel region.

After the photo went viral on Twitter (it’s been shared nearly 40,000 times to date), Gerst wrote a blog post reflecting on what he saw. He acknowledged the violence wasn’t visible in the photo, but said he could still see it.

“What came to my mind at the time of this photo was, if we ever will be visited by another species from somewhere in the universe, how would we explain to them what they might see as the very first thing when they look at our planet?” wrote Alexander Gerst in a post on the European Space Agency’s website.

“How would we explain to them the way we humans treat not only each other but also our fragile blue planet, the only home we have? I do not have an answer for that.”

Gerst described the scene as “streaks of light going forth and back over a dark Earth, occasionally lit up by orange fireballs.”

Here’s the original tweet:

Apollo 11 Splashdown 45 Years Ago on July 24, 1969 Concludes 1st Moon Landing Mission – Gallery

Apollo 11 Comes Home. The Apollo 11 crew await pickup by a helicopter from the USS Hornet, prime recovery ship for the historic lunar landing mission. The fourth man in the life raft is a United States Navy underwater demolition team swimmer. All four men are wearing biological isolation garments. They splashed down at 12:49 a.m. EDT, July 24, 1969, about 812 nautical miles southwest of Hawaii and only 12 nautical miles from the USS Hornet. Credit: NASA

Apollo 11 Comes Home
The Apollo 11 crew await pickup by a helicopter from the USS Hornet, prime recovery ship for the historic lunar landing mission. The fourth man in the life raft is a United States Navy underwater demolition team swimmer. All four men are wearing biological isolation garments. They splashed down at 12:49 a.m. EDT, July 24, 1969, about 812 nautical miles southwest of Hawaii and only 12 nautical miles from the USS Hornet. Credit: NASA
Story and gallery expanded[/caption]

The three man crew of NASA’s Apollo 11 splashed down in the Pacific Ocean 45 years ago today on July 24, 1969 – successfully concluding Earth’s first journey to land humans on another world and return them safely to our Home Planet.

Apollo 11 Commander Neil Armstrong became the first human to set foot on the Moon on July 20, 1969 after he stepped off the footpad of the Lunar Module Eagle soon after the start of the moonwalk EVA at 10:39 p.m. EDT and onto the lunar surface with his left foot at the Sea of Tranquility at 10:56 p.m. EDT. Lunar Module (LM) pilot Buzz Aldrin followed soon thereafter. They came in peace for all mankind!

The magnificent Lunar landing feat accomplished by US Apollo 11 astronauts Neil Armstrong and Buzz Aldrin marks the pinnacle of Mankind’s most momentous achievement.

The Apollo 11 crew consisting of Neil Armstrong, Buzz Aldrin and Command module pilot Michael Collins splashed down safely at 12:50 p.m. EDT on July 24 about 900 miles southwest of Hawaii in the North Pacific Ocean while seated inside the Command Module Columbia dangling at the end of a trio of massive parachutes that slowed their descent through the Earth’s atmosphere.

President Nixon Greets the Returning Apollo 11 Astronauts. The Apollo 11 astronauts, left to right, Commander Neil A. Armstrong, Command Module Pilot Michael Collins and Lunar Module Pilot Edwin E. "Buzz" Aldrin Jr., inside the Mobile Quarantine Facility aboard the USS Hornet, listen to President Richard M. Nixon on July 24, 1969 as he welcomes them back to Earth and congratulates them on the successful mission. The astronauts had splashed down in the Pacific Ocean at 12:50 p.m. EDT about 900 miles southwest of Hawaii.  Credit: NASA
President Nixon Greets the Returning Apollo 11 Astronauts. The Apollo 11 astronauts, left to right, Commander Neil A. Armstrong, Command Module Pilot Michael Collins and Lunar Module Pilot Edwin E. “Buzz” Aldrin Jr., inside the Mobile Quarantine Facility aboard the USS Hornet, listen to President Richard M. Nixon on July 24, 1969 as he welcomes them back to Earth and congratulates them on the successful mission. The astronauts had splashed down in the Pacific Ocean at 12:50 p.m. EDT about 900 miles southwest of Hawaii. Credit: NASA

After a mission duration of 8 days, 3 hours, 18 minutes, 35 seconds from launch to landing the Apollo 11 crew were plucked from the ocean by helicopters from the USS Hornet recovery ship after splashdown only 12 nautical miles (24 km) away.

They had to don protective biological isolation garments (BIGs) in case they were infected by some unknown and potentially hazardous “moon germs.” Of course there were no pathogens, but this was not definitely known at the time.

After their return to Earth, the trio was scrubbed with a disinfect solution of sodium hypochlorite and had to remain in quarantine for 21 days inside a 30 feet (9.1 m) long quarantine facility known as the Lunar Receiving Laboratory (LRL).

They were welcomed back to Earth by President Nixon aboard the USS Hornet.

We’ve chronicled the journey of Apollo 11 and lunar touchdown on July 20, 1969 as well as this week’s renaming of a historic human spaceflight facility at the Kennedy Space Center in honor of Mission Commander Neil Armstrong.

Armstrong passed away at age 82 on August 25, 2012 due to complications from heart bypass surgery. Read my prior tribute articles: here and here

Here we’ve collected a gallery of the mission and ocean splashdown that brought Apollo 11 to a close and fulfilled the lunar landing quest set by a young President John F. Kennedy early in the decade of the 1960s.

The trio blasted off atop a 363 foot-tall Saturn V rocket from Launch Complex 39A on their bold, quarter of a million mile moon mission from the Kennedy Space Center , Florida on July 16, 1969.

Apollo 11 Official Crew Portrait.    Official crew photo of the Apollo 11 Prime Crew. From left to right are astronauts Neil A. Armstrong, Commander; Michael Collins, Command Module Pilot; and Edwin E. Aldrin Jr., Lunar Module Pilot.  Image Credit: NASA
Apollo 11 Official Crew Portrait. Official crew photo of the Apollo 11 Prime Crew. From left to right are astronauts Neil A. Armstrong, Commander; Michael Collins, Command Module Pilot; and Edwin E. Aldrin Jr., Lunar Module Pilot. Image Credit: NASA

The three-stage Saturn V generated 7.5 million pounds of thrust and propelled the trio into space and immortality.

Read my story about the deep sea recovery of the Apollo 11 first stage F-1 engines in 2013 – here.

The crew arrived in lunar orbit three days later on July 19, 1969, inside the docked Apollo 11 Command/Service and Lunar Modules (CSM/LM).

Armstrong and Aldrin then moved into the Lunar Module, undocked and safely touched down at the Sea of Tranquility on the lunar surface on July 20, 1969 at 4:18 p.m EDT as hundreds of millions across the globe watched in awe.

Six hours later Armstrong climbed down the LM ladder and stepped onto the Moon and into immortality.

Armstrong’s first words:

“That’s one small step for [a] man, one giant leap for mankind.”

During their 2 ½ hour long moonwalk Armstrong and Aldrin unveiled a plaque on the side of the lunar module. Armstrong read the words;

“Here men from the planet Earth first set foot upon the moon. July 1969 A.D. We came in peace for all mankind.”

The duo collected about 50 pounds (22 kg) of priceless moon rocks and set out the first science experiments placed by humans on another world. The moon rocks were invaluable in informing us about the origin of the Earth – Moon system.

Here is NASA’s restored video of the Apollo 11 EVA on July 20, 1969:

Video Caption: Original Mission Video as aired in July 1969 depicting the Apollo 11 astronauts conducting several tasks during extravehicular activity (EVA) operations on the surface of the moon. The EVA lasted approximately 2.5 hours with all scientific activities being completed satisfactorily. The Apollo 11 EVA began at 10:39:33 p.m. EDT on July 20, 1969 when Astronaut Neil Armstrong emerged from the spacecraft first. While descending, he released the Modularized Equipment Stowage Assembly on the Lunar Module’s descent stage.

Altogether Armstrong and Aldrin spent about 21 hours on the moon’s surface. Then they said goodbye to the greatest adventure and fired up the LM ascent engine to rejoin Michael Collins circling above in the Apollo 11 Command Module.

“The whole world was together at that particular moment,” says NASA Administrator Charles Bolden in a CNN interview. “In spite of all we are going through there is hope!”

Celebrating Apollo 11.  NASA and Manned Spacecraft Center (MSC) officials joined with flight controllers to celebrate the successful conclusion of the Apollo 11 lunar landing mission in the Mission Control Center. From left foreground Dr. Maxime A. Faget, MSC Director of Engineering and Development; George S. Trimble, MSC Deputy Director; Dr. Christopher C. Kraft Jr., MSC Director fo Flight Operations; Julian Scheer (in back), Assistant Adminstrator, Office of Public Affairs, NASA HQ.; George M. Low, Manager, Apollo Spacecraft Program, MSC; Dr. Robert R. Gilruth, MSC Director; and Charles W. Mathews, Deputy Associate Administrator, Office of Manned Space Flight, NASA HQ.  Credit: NASA
Celebrating Apollo 11. NASA and Manned Spacecraft Center (MSC) officials joined with flight controllers to celebrate the successful conclusion of the Apollo 11 lunar landing mission in the Mission Control Center. From left foreground Dr. Maxime A. Faget, MSC Director of Engineering and Development; George S. Trimble, MSC Deputy Director; Dr. Christopher C. Kraft Jr., MSC Director fo Flight Operations; Julian Scheer (in back), Assistant Adminstrator, Office of Public Affairs, NASA HQ.; George M. Low, Manager, Apollo Spacecraft Program, MSC; Dr. Robert R. Gilruth, MSC Director; and Charles W. Mathews, Deputy Associate Administrator, Office of Manned Space Flight, NASA HQ. Credit: NASA

Stay tuned here for Ken’s Earth & Planetary science and human spaceflight news.

Ken Kremer

Apollo 11 Welcome. New York City welcomes the Apollo 11 crew in a ticker tape parade down Broadway and Park Avenue. Pictured in the lead car, from the right, are astronauts Neil A. Armstrong, Buzz Aldrin and Michael Collins. The three astronauts teamed for the first manned lunar landing, on July 20, 1969.  Credit: NASA
Apollo 11 Welcome. New York City welcomes the Apollo 11 crew in a ticker tape parade down Broadway and Park Avenue. Pictured in the lead car, from the right, are astronauts Neil A. Armstrong, Buzz Aldrin and Michael Collins. The three astronauts teamed for the first manned lunar landing, on July 20, 1969. Credit: NASA
Apollo 11 Launch.  The American flag heralded the launch of Apollo 11, the first Lunar landing mission, on July 16, 1969. The massive Saturn V rocket lifted off from NASA's Kennedy Space Center with astronauts Neil A. Armstrong, Michael Collins, and Edwin "Buzz" Aldrin at 9:32 a.m. EDT. Four days later, on July 20, Armstrong and Aldrin landed on the Moon's surface while Collins orbited overhead in the Command Module. Armstrong and Aldrin gathered samples of lunar material and deployed scientific experiments that transmitted data about the lunar environment.   Credit: NASA
Apollo 11 Launch. The American flag heralded the launch of Apollo 11, the first Lunar landing mission, on July 16, 1969. The massive Saturn V rocket lifted off from NASA’s Kennedy Space Center with astronauts Neil A. Armstrong, Michael Collins, and Edwin “Buzz” Aldrin at 9:32 a.m. EDT. Four days later, on July 20, Armstrong and Aldrin landed on the Moon’s surface while Collins orbited overhead in the Command Module. Armstrong and Aldrin gathered samples of lunar material and deployed scientific experiments that transmitted data about the lunar environment. Credit: NASA
Launch of Apollo 11.  On July 16, 1969, the huge, 363-feet tall Saturn V rocket launches on the Apollo 11 mission from Pad A, Launch Complex 39, Kennedy Space Center, at 9:32 a.m. EDT. Onboard the Apollo 11 spacecraft are astronauts Neil A. Armstrong, commander; Michael Collins, command module pilot; and Edwin E. Aldrin Jr., lunar module pilot. Apollo 11 was the United States' first lunar landing mission. While astronauts Armstrong and Aldrin descended in the Lunar Module "Eagle" to explore the Sea of Tranquility region of the moon, astronaut Collins remained with the Command and Service Modules "Columbia" in lunar orbit.  Image credit: NASA
Launch of Apollo 11. On July 16, 1969, the huge, 363-feet tall Saturn V rocket launches on the Apollo 11 mission from Pad A, Launch Complex 39, Kennedy Space Center, at 9:32 a.m. EDT. Onboard the Apollo 11 spacecraft are astronauts Neil A. Armstrong, commander; Michael Collins, command module pilot; and Edwin E. Aldrin Jr., lunar module pilot. Apollo 11 was the United States’ first lunar landing mission. While astronauts Armstrong and Aldrin descended in the Lunar Module “Eagle” to explore the Sea of Tranquility region of the moon, astronaut Collins remained with the Command and Service Modules “Columbia” in lunar orbit. Image credit: NASA
The Eagle Prepares to Land.  The Apollo 11 Lunar Module Eagle, in a landing configuration was photographed in lunar orbit from the Command and Service Module Columbia. Inside the module were Commander Neil A. Armstrong and Lunar Module Pilot Buzz Aldrin. The long rod-like protrusions under the landing pods are lunar surface sensing probes. Upon contact with the lunar surface, the probes sent a signal to the crew to shut down the descent engine.  Image Credit: NASA
The Eagle Prepares to Land. The Apollo 11 Lunar Module Eagle, in a landing configuration was photographed in lunar orbit from the Command and Service Module Columbia. Inside the module were Commander Neil A. Armstrong and Lunar Module Pilot Buzz Aldrin. The long rod-like protrusions under the landing pods are lunar surface sensing probes. Upon contact with the lunar surface, the probes sent a signal to the crew to shut down the descent engine. Image Credit: NASA
On the Lunar Surface – Apollo 11 astronauts trained on Earth to take individual photographs in succession in order to create a series of frames that could be assembled into panoramic images. This frame from fellow astronaut Buzz Aldrin’s panorama of the Apollo 11 landing site is the only good picture of mission commander Neil Armstrong on the lunar surface. Credit: NASA
On the Lunar Surface – Apollo 11 astronauts trained on Earth to take individual photographs in succession in order to create a series of frames that could be assembled into panoramic images. This frame from fellow astronaut Buzz Aldrin’s panorama of the Apollo 11 landing site is the only good picture of mission commander Neil Armstrong on the lunar surface. Credit: NASA
Aldrin Gazes at Tranquility Base. Astronaut and Lunar Module pilot Buzz Aldrin is pictured during the Apollo 11 extravehicular activity on the moon. He had just deployed the Early Apollo Scientific Experiments Package. In the foreground is the Passive Seismic Experiment Package; beyond it is the Laser Ranging Retro-Reflector (LR-3). In the left background is the black and white lunar surface television camera and in the far right background is the Lunar Module "Eagle." Mission commander Neil Armstrong took this photograph with the 70mm lunar surface camera.   Image credit: NASA
Aldrin Gazes at Tranquility Base. Astronaut and Lunar Module pilot Buzz Aldrin is pictured during the Apollo 11 extravehicular activity on the moon. He had just deployed the Early Apollo Scientific Experiments Package. In the foreground is the Passive Seismic Experiment Package; beyond it is the Laser Ranging Retro-Reflector (LR-3). In the left background is the black and white lunar surface television camera and in the far right background is the Lunar Module “Eagle.” Mission commander Neil Armstrong took this photograph with the 70mm lunar surface camera. Image credit: NASA
At the Kennedy Space Center in Florida on July 21, 2014, NASA officials and Apollo astronauts have a group portrait taken in front of the refurbished Operations and Checkout Building, newly named for Apollo 11 astronaut Neil Armstrong, the first person to set foot on the moon. From left are NASA Administrator Charles Bolden, Apollo astronauts Mike Collins, Buzz Aldrin and Jim Lovell, and Center Director Robert Cabana. The visit of the former astronauts was part of NASA's 45th anniversary celebration of the Apollo 11 moon landing. The building's high bay is being used to support the agency's new Orion spacecraft, which will lift off atop the Space Launch System rocket. Photo credit: NASA/Kevin O'Connell
At the Kennedy Space Center in Florida on July 21, 2014, NASA officials and Apollo astronauts have a group portrait taken in front of the refurbished Operations and Checkout Building, newly named for Apollo 11 astronaut Neil Armstrong, the first person to set foot on the moon. From left are NASA Administrator Charles Bolden, Apollo astronauts Mike Collins, Buzz Aldrin and Jim Lovell, and Center Director Robert Cabana. The visit of the former astronauts was part of NASA’s 45th anniversary celebration of the Apollo 11 moon landing. The building’s high bay is being used to support the agency’s new Orion spacecraft, which will lift off atop the Space Launch System rocket. Photo credit: NASA/Kevin O’Connell

Neck Of Rosetta’s ‘Rubby Duckie’ Comet Shows A Bright Ring

Rosetta imaged its target comet, Comet 67P/Churyumov-Gerasimenko, from about 3,417 miles (5,500 kilometers) away. The "neck" of the comet appears to be brighter than the rest of the nucleus. Credit: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA

Rosetta’s “rubber duckie” comet appears to be wearing a collar! New images of Comet 67P/Churyumov-Gerasimenko from the spacecraft, which is speeding towards an orbit of the comet next month, show that the “neck” region of the nucleus appears to be brighter than the rest.

Last week, images from the spacecraft revealed that the comet likely has a “contact binary” nucleus, meaning that there are two parts of the nucleus that are just barely joined together under low gravity. There are many theories for why this happened, but it will take a closer examination to begin to come up with answers. The shape of the nucleus reminds many of a rubber duckie.

As for why the “neck” region appears brighter, that’s not known right now. There could be different grains in that region of the nucleus, or it could be some feature of the surface. Or perhaps it is a different type of material there. The scientists plan to get more spectral information from this region in the coming weeks, which could reveal what elements are there.

“Even though the images taken from a distance of 5500 kilometers are still not highly resolved, the scientists feel remotely reminded of comet 103P/Hartley,” stated the Max Planck Institute for Solar System Research.

“This body was visited in a flyby by NASA’s EPOXI mission in 2010. While Hartley’s ends show a rather rough surface, its middle is much smoother. Scientists believe this waist to be a gravitational low: since it contains the body’s center of mass, emitted material that cannot leave the comet’s gravitational field is most likely to be re-deposited there.”

Rosetta is expected to arrive at the comet on August 6, and to send out its spider-like lander (Philae) in November. The spacecraft will remain with the comet through its closest approach to the sun in 2015, between the orbits of Earth and Mars.

Source: Max Planck Institute for Solar System Research