Boeing Completes All CST-100 Commercial Crew CCiCAP Milestones on Time and on Budget for NASA – Ahead of Competitors

Boeing unveiled full scale mockup of their commercial CST-100 'Space Taxi' on June 9, 2014 at its intended manufacturing facility at the Kennedy Space Center in Florida. The private vehicle will launch US astronauts to low Earth orbit and the ISS from US soil. Credit: Ken Kremer - kenkremer.com

In the ‘new race to space’ to restore our capability to launch Americans to orbit from American soil with an American-built commercial ‘space taxi’ as rapidly and efficiently as possible, Boeing has moved to the front of the pack with their CST-100 spaceship by completing all their assigned NASA milestones on time and on budget in the current phase of the agency’s Commercial Crew Program (CCP).

Boeing is the first, and thus far only one of the three competitors (including Sierra Nevada Corp. and SpaceX) to complete all their assigned milestone task requirements under NASA’s Commercial Crew Integrated Capability (CCiCap) initiative funded under the auspices of the agency’s Commercial Crew Program.

The CST-100 is a privately built, man rated capsule being developed with funding from NASA via the commercial crew initiative in a public/private partnership between NASA and private industry.

The overriding goal is restart America’s capability to reliably launch our astronauts from US territory to low-Earth orbit (LEO) and the International Space Station (ISS) by 2017.

Hatch opening to Boeing’s commercial CST-100 crew transporter.  Credit: Ken Kremer - kenkremer.com
Hatch opening to Boeing’s commercial CST-100 crew transporter. Credit: Ken Kremer – kenkremer.com

Private space taxis are the fastest and cheapest way to accomplish that and end the gap in indigenous US human spaceflight launches.

Since the forced shutdown of NASA’s Space Shuttle program following its final flight in 2011, US astronauts have been 100% dependent on the Russians and their cramped but effective Soyuz capsule for rides to the station and back – at a cost exceeding $70 million per seat.

Boeing announced that NASA approved the completion of the final two commercial crew milestones contracted to Boeing for the CST-100 development.

These last two milestones are the Phase Two Spacecraft Safety Review of its Crew Space Transportation (CST)-100 spacecraft and the Critical Design Review (CDR) of its integrated systems.

The CDR milestone was completed in July and comprised 44 individual CDRs including propulsion, software, avionics, landing, power and docking systems.

The Phase Two Spacecraft Safety Review included an overall hazard analysis of the spacecraft, identifying life-threatening situations and ensuring that the current design mitigated any safety risks, according to Boeing.

“The challenge of a CDR is to ensure all the pieces and sub-systems are working together,” said John Mulholland, Boeing Commercial Crew program manager, in a statement.

“Integration of these systems is key. Now we look forward to bringing the CST-100 to life.”

Boeing CST-100 manned space capsule in free flight in low Earth orbit will transport astronaut crews to the International Space Station. Credit: Boeing
Boeing CST-100 manned space capsule in free flight in low Earth orbit will transport astronaut crews to the International Space Station. Credit: Boeing

Passing the CDR and completing all the NASA milestone requirements is a significant step leading to the final integrated design for the CST-100 space taxi, ground systems and Atlas V launcher that will boost it to Earth orbit from Space Launch Complex-41 on Cape Canaveral Air Force Station in Florida.

The Sierra Nevada Dream Chaser and SpaceX Dragon V2 and are also receiving funds from NASA’s commercial crew program.

All three American aerospace firms vying for the multibillion dollar NASA contract to build an American ‘space taxi’ to ferry US astronauts to the International Space Station and back as soon as 2017.

NASA’s Commercial Crew Program office is expected to announce the winner(s) of the high stakes, multibillion dollar contract to build America’s next crew vehicles in the next program phase, known as Commercial Crew Transportation Capability (CCtCap), “sometime around the end of August/September,” NASA News spokesman Allard Beutel confirmed to me.

“We don’t have a scheduled date for the commercial crew award(s).”

There will be 1 or more CCtCAP winners.

Boeing CST-100 capsule interior up close.  Credit: Ken Kremer - kenkremer.com
Boeing CST-100 capsule interior up close. Credit: Ken Kremer – kenkremer.com

On June 9, 2014, Boeing revealed the design of their CST-100 astronaut spaceliner by unveiling a full scale mockup of their commercial ‘space taxi’ at the new home of its future manufacturing site at the Kennedy Space Center (KSC) located inside a refurbished facility that most recently was used to prepare NASA’s space shuttle orbiters for assembly missions to the ISS.

The CST-100 crew transporter was unveiled at the invitation only ceremony and media event held inside the gleaming white and completely renovated NASA processing hangar known as Orbiter Processing Facility-3 (OPF-3) – and attended by Universe Today.

The huge 64,000 square foot facility has sat dormant since the shuttles were retired following their final flight (STS-135) in July 2011 and which was commanded by Chris Ferguson, who now serves as director of Boeing’s Crew and Mission Operations.

Ferguson and the Boeing team are determined to get Americans back into space from American soil with American rockets.

Read my exclusive, in depth one-on-one interviews with Chris Ferguson – America’s last shuttle commander – about the CST-100; here and here.

Chris Ferguson, last Space Shuttle Atlantis commander, tests the Boeing CST-100 capsule which may fly US astronauts to the International Space Station in 2017.  Ferguson is now  Boeing’s director of Crew and Mission Operations for the Commercial Crew Program vying for NASA funding.  Credit: NASA/Boeing
Chris Ferguson, last Space Shuttle Atlantis commander, tests the Boeing CST-100 capsule which may fly US astronauts to the International Space Station in 2017. Ferguson is now Boeing’s director of Crew and Mission Operations for the Commercial Crew Program vying for NASA funding. Credit: NASA/Boeing

Boeing’s philosophy is to make the CST-100 a commercial endeavor, as simple and cost effective as possible in order to quickly kick start US human spaceflight efforts. It’s based on proven technologies drawing on Boeing’s 100 year heritage in aviation and space.

“The CST-100, it’s a simple ride up to and back from space,” Ferguson told me. “So it doesn’t need to be luxurious. It’s an ascent and reentry vehicle – and that’s all!”

So the CST-100 is basically a taxi up and a taxi down from LEO. NASA’s complementary human space flight program involving the Orion crew vehicle is designed for deep space exploration.

The vehicle includes five recliner seats, a hatch and windows, the pilots control console with several attached Samsung tablets for crew interfaces with wireless internet, a docking port to the ISS and ample space for 220 kilograms of cargo storage of an array of equipment, gear and science experiments depending on NASA’s allotment choices.

The interior features Boeing’s LED Sky Lighting with an adjustable blue hue based on its 787 Dreamliner airplanes to enhance the ambience for the crew.

Boeing CST-100 crew capsule will carry five person crews to the ISS.  Credit: Ken Kremer - kenkremer.com
Boeing CST-100 crew capsule will carry five person crews to the ISS. Credit: Ken Kremer – kenkremer.com

The reusable capsule will launch atop a man rated United Launch Alliance (ULA) Atlas V rocket.

“The first unmanned orbital test flight is planned in January 2017… and may go to the station,” Ferguson told me during our exclusive interview about Boeing’s CST-100 plans.

Since 2010, NASA has spent over $1.5 billion on the commercial crew effort.

Boeing has received the largest share of funding in the current CCiCAP phase amounting to about $480 million. SpaceX received $460 million for the Dragon V2 and Sierra Nevada Corp. (SNC) has received a half award of $227.5 million for the Dream Chaser mini-shuttle.

SNC will be the next company to complete all of NASA’s milestones this Fall, SNC VP Mark Sirangelo told me in an exclusive interview. SpaceX will be the final company finishing its milestones sometime in 2015.

Stay tuned here for Ken’s continuing Boeing, Sierra Nevada, SpaceX, Orbital Sciences, commercial space, Orion, Curiosity, Mars rover, MAVEN, MOM and more planetary and human spaceflight news.

Ken Kremer

Boeing's CST-100 project engineer Tony Castilleja describes the capsule during a fascinating interview with Ken Kremer/Universe Today on June 9, 2014 while sitting inside the full scale mockup of the Boeing CST-100 space taxi during unveiling ceremony at NASA's Kennedy Space Center. Credit: Ken Kremer - kenkremer.com
Boeing’s CST-100 project engineer Tony Castilleja describes the capsule during a fascinating interview with Ken Kremer/Universe Today on June 9, 2014 while sitting inside the full scale mockup of the Boeing CST-100 space taxi during unveiling ceremony at NASA’s Kennedy Space Center. Credit: Ken Kremer – kenkremer.com

5 Landing Site Candidates Selected for Rosetta’s Historic Philae Comet Lander

Five candidate sites were identified on Comet 67P/Churyumov-Gerasimenko for Rosetta’s Philae lander. The approximate locations of the five regions are marked on these OSIRIS narrow-angle camera images taken on 16 August 2014 from a distance of about 100 km. Enlarged insets below highlight 5 landing zones. Credits: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA Processing: Marco Di Lorenzo/Ken Kremer

Five candidate sites were identified on Comet 67P/Churyumov-Gerasimenko for Rosetta’s Philae lander. The approximate locations of the five regions are marked on these OSIRIS narrow-angle camera images taken on 16 August 2014 from a distance of about 100 km. Enlarged insets below highlight 5 landing zones. Credits: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA Processing: Marco Di Lorenzo/Ken Kremer
Story updated[/caption]

The ‘Top 5’ landing site candidates have been chosen for the Rosetta orbiters piggybacked Philae lander for humankind’s first attempt to land on a comet. See graphics above and below.

The potential touchdown sites were announce today, Aug. 25, based on high resolution measurements collected by ESA’s Rosetta spacecraft over the past two weeks since arriving at the bizarre and pockmarked Comet 67P/Churyumov-Gerasimenko on Aug. 6, 2014.

Rosetta is a mission of many firsts, including history’s first ever attempt to orbit a comet for long term study.

Philae’s history making landing on comet 67P is currently scheduled for around Nov. 11, 2014, and will be entirely automatic. The 100 kg lander is equipped with 10 science instruments.

“This is the first time landing sites on a comet have been considered,” said Stephan Ulamec, Lander Manager at DLR (German Aerospace Center), in an ESA statement.

Artist impression of Philae on the surface of comet 67P/Churyumov-Gerasimenko.  Credit: ESA/ATG medialab
Artist impression of Philae on the surface of comet 67P/Churyumov-Gerasimenko. Credit: ESA/ATG medialab

Since rendezvousing with the comet after a decade long chase of over 6.4 billion kilometers (4 Billion miles), a top priority task for the science and engineering team leading Rosetta has been “Finding a landing strip” for the Philae comet lander.

“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 arrival live webcast.

So ‘the clock is ticking’ to select a suitable landing zone soon as the comet warms up and the surface becomes ever more active as it swings in closer to the sun and makes the landing ever more hazardous.

This past weekend, the site selection team met at CNES, Toulouse, France, and intensively discussed and scrutinized a preliminary list of 10 potential sites, and whittled that down to the ‘Top 5.’

Their goal was to find a ‘technically feasible’ touchdown site that was both safe and scientifically interesting.

“The site must balance the technical needs of the orbiter and lander during all phases of the separation, descent, and landing, and during operations on the surface with the scientific requirements of the 10 instruments on board Philae,” said ESA.

They also had to be within an ellipse of at least 1 square kilometer (six-tenths of a square mile) in diameter due to uncertainties in navigation as well as many other factors.

“For each possible zone, important questions must be asked: Will the lander be able to maintain regular communications with Rosetta? How common are surface hazards such as large boulders, deep crevasses or steep slopes? Is there sufficient illumination for scientific operations and enough sunlight to recharge the lander’s batteries beyond its initial 64-hour lifetime, while not so much as to cause overheating?” according to ESA.

Stephan Ulamec, Philae Lander Manager at DLR (German Aerospace Center) discusses landing during ESA webcast of Rosetta’s arrival at comet  Comet 67P/Churyumov-Gerasimenko. Credit: ESA
Stephan Ulamec, Philae Lander Manager at DLR (German Aerospace Center) discusses landing during ESA webcast of Rosetta’s arrival at comet Comet 67P/Churyumov-Gerasimenko. Credit: ESA

The Landing Site Selection Group (LSSG) team was comprised of engineers and scientists from Philae’s Science, Operations and Navigation Centre (SONC) at CNES, the Lander Control Centre (LCC) at DLR, scientists representing the Philae Lander instruments as well as the ESA Rosetta team, which includes representatives from science, operations and flight dynamics.

“Based on the particular shape and the global topography of Comet 67P/ Churyumov-Gerasimenko, it is probably no surprise that many locations had to be ruled out,” said Ulamec.

“The candidate sites that we want to follow up for further analysis are thought to be technically feasible on the basis of a preliminary analysis of flight dynamics and other key issues – for example they all provide at least six hours of daylight per comet rotation and offer some flat terrain. Of course, every site has the potential for unique scientific discoveries.”

When Rosetta arrived on Aug. 6, it was initially orbiting at a distance of about 100 km (62 miles) in front of the comet. Carefully timed thruster firings then brought it to within about 80 km distance. And it is moving far closer – to within 50 kilometers (31 miles) and even closer!

Upon arrival the comet was 522 million km from the Sun. As Rosetta escorts the comet looping around the sun, they move much closer. By landing time in mid-November they are only about 450 million km (280 million mi) from the sun.

At closest approach on 13 August 2015 the comet and Rosetta will be 185 million km from the Sun. That corresponds to an eightfold increase in the light received from the Sun.

Five candidate sites were identified on Comet 67P/Churyumov-Gerasimenko for Rosetta’s Philae lander.   The approximate locations of the five regions are marked on these OSIRIS narrow-angle camera images taken on 16 August from a distance of about 100 km. Credits: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA
Five candidate sites were identified on Comet 67P/Churyumov-Gerasimenko for Rosetta’s Philae lander. The approximate locations of the five regions are marked on these OSIRIS narrow-angle camera images taken on 16 August 2014 from a distance of about 100 km. Credits: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA

Therefore Rosetta and Philae will simultaneously study the warming effects of the sun as the comet outgases dust, water and much more.

The short period Comet 67P/Churyumov-Gerasimenko has an orbital period of 6.5 years.

“The comet is very different to anything we’ve seen before, and exhibits spectacular features still to be understood,” says Jean-Pierre Bibring, a lead lander scientist and principal investigator of the CIVA instrument.

“The five chosen sites offer us the best chance to land and study the composition, internal structure and activity of the comet with the ten lander experiments.”

A close-up view of Comet 67P/Churyumov–Gerasimenko taken by the Rosetta spacecraft on Aug. 7, 2014. Credit:  ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA
A close-up view of Comet 67P/Churyumov–Gerasimenko taken by the Rosetta spacecraft on Aug. 7, 2014. Credit: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA

The ‘Top 5’ zones will be ranked by 14 September. Three are on the ‘head’ and two are on the ‘body’ of the bizarre two lobed alien world.

And a backup landing site will also be chosen for planning purposes and to develop landing sequences.

The ultimate selection of the primary landing site is slated for 14 October after consultation between ESA and the lander team on a “Go/No Go” decision.

The three-legged lander will fire two 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 23 centimeters into and sample its incredibly varied surface.

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 – the building blocks of life as we know it.

Any finding of organic molecules will be a major discovery for Rosetta and ESA and inform us about the origin of life on Earth.

Read an Italian language version of this story by my imaging partner Marco Di Lorenzo – here

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

Ken Kremer

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
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
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

Read my Rosetta series here:

Rosetta Moving Closer to Comet 67P Hunting for Philae Landing Site


Coma Dust Collection Science starts for Rosetta at Comet 67P/Churyumov-Gerasimenko

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

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

India’s Maiden Mars Mission One Month out from Red Planet Arrival

ISRO's Mars Orbiter Mission spacecraft is just 9 million km away from Mars as of Aug. 22, 2014. Credit: ISRO

India’s maiden foray to Mars is now just one month out from the Red Planet and closing in fast on the final stages of the history making rendezvous culminating on September 24, 2014.

As of Aug. 22, 2014, the Mars Orbiter Mission, or MOM, was just 9 million kilometers away from Mars and the crucial Mars Orbital Insertion (MOI) engine firing that places India’s first interplanetary voyager into orbit around the 4th planet from the Sun.

MOM was designed and developed by the Indian Space Research Organization’s (ISRO) at a cost of $69 Million and marks India’s maiden foray into interplanetary flight.

So far it has traveled a total distance of 602 million km in its heliocentric arc towards Mars, says ISRO. It is currently 189 million km away from Earth. Round trip radio signals communicating with MOM take 20 minutes and 47 seconds.

After streaking through space for some ten and a half months, the 1,350 kilogram (2,980 pound) MOM probe will fire its 440 Newton liquid fueled main engine to brake into orbit around the Red Planet on September 24, 2014 – where she will study the atmosphere and sniff for signals of methane.

The do or die MOI burn on September 24 places MOM into an 377 km x 80,000 km elliptical orbit around Mars.

ISRO space engineers are taking care to precisely navigate MOM to keep it on course during its long heliocentric trajectory from Earth to Mars through a series of in flight Trajectory Correction Maneuvers (TMSs).

The last TCM was successfully performed on June 11 by firing the spacecraft’s 22 Newton thrusters for a duration of 16 seconds. TCM-1 was conducted on December 11, 2013 by firing the 22 Newton Thrusters for 40.5 seconds.

Engineers determined that a TCM planned for August was not needed.

The final TCM firing is planned in September 2014.

MOM’s trajectory to Mars. Credit: ISRO
MOM’s trajectory to Mars. Credit: ISRO

Engineers also completed the checkout of the medium gain antenna in August, “which will be used to communicate with Earth during the critical MOI” maneuver, ISRO reported.

The probe is being continuously monitored by the Indian Deep Space Network (IDSN) and NASA JPL’s Deep Space Network (DSN) to maintain it on course.

Blastoff of the Indian developed Mars Orbiter Mission (MOM) on Nov. 5, 2013 from the Indian Space Research Organization’s (ISRO) Satish Dhawan Space Centre SHAR, Sriharikota. Credit: ISRO
Blastoff of the Indian developed Mars Orbiter Mission (MOM) on Nov. 5, 2013 from the Indian Space Research Organization’s (ISRO) Satish Dhawan Space Centre SHAR, Sriharikota. Credit: ISRO

MOM was launched on Nov. 5, 2013 from India’s spaceport at the Satish Dhawan Space Centre, Sriharikota, atop the nations indigenous four stage Polar Satellite Launch Vehicle (PSLV) which placed the probe into its initial Earth parking orbit.

Six subsequent orbit raising maneuvers raised its orbit and culminated with a liquid fueled main engine firing on Dec. 1, 2013. The Trans Mars Injection(TMI) maneuver that successfully placed MOM on its heliocentric trajectory to the Red Planet.

First ever image of Earth Taken by Mars Color Camera aboard India’s Mars Orbiter Mission (MOM) spacecraft while orbiting Earth and before the Trans Mars Insertion firing on Dec. 1, 2013. Image is focused on the Indian subcontinent.  Credit: ISRO
First ever image of Earth Taken by Mars Color Camera aboard India’s Mars Orbiter Mission (MOM) spacecraft while orbiting Earth and before the Trans Mars Insertion firing on Dec. 1, 2013. Image is focused on the Indian subcontinent. Credit: ISRO

MOM is streaking to Mars along with NASA’s MAVEN orbiter, which arrives at Mars about two days earlier.

MOM and MAVEN will join Earth’s fleet of 3 current orbiters from NASA and ESA as well as NASA’s pair of sister surface rovers Curiosity and Opportunity.

If all goes well, India will join an elite club of only four who have launched probes that successfully investigated the Red Planet from orbit or the surface – following the Soviet Union, the United States and the European Space Agency (ESA).

MOM’s main objective is a demonstration of technological capabilities and it will also study the planet’s atmosphere and surface.

The probe is equipped with five indigenous instruments to conduct meaningful science – including a multi color imager and a methane gas sniffer to study the Red Planet’s atmosphere, morphology, mineralogy and surface features. Methane on Earth originates from both geological and biological sources – and could be a potential marker for the existence of Martian microbes.

India’s Mars Orbiter Mission (MOM) marked 100 days out from Mars on June 16, 2014 and the Mars Orbit Insertion engine firing when it arrives at the Red Planet on September 24, 2014 after its 10 month interplanetary journey.  Credit ISRO
India’s Mars Orbiter Mission (MOM) marked 100 days out from Mars on June 16, 2014 and the Mars Orbit Insertion engine firing when it arrives at the Red Planet on September 24, 2014 after its 10 month interplanetary journey. Credit ISRO

ISRO is also working to determine if MOM can gather scientific measurements of
Comet C/2013 A1 Siding Spring during an extremely close flyby with the Red Planet on Oct. 19, 2014.

MAVEN and NASA’s other Mars probes will study the comet.

Stay tuned here for Ken’s continuing MOM, MAVEN, Opportunity, Curiosity, Mars rover and more planetary and human spaceflight news.

Ken Kremer

MOM's first Trajectory Correction Manoeuver in Baiju Raj's imagination.
MOM’s first Trajectory Correction Manoeuver in Baiju Raj’s imagination.

Watch A ‘Jellyfish Of Fire’ Created On The International Space Station

A screenshot of an experiment in the Flame Extinguishment Experiment - 2 (FLEX-2) on the International Space Station, taken during Expedition 40 in August 2014. Credit: Reid Wiseman/Vine

Reid Wiseman, NASA astronaut and part-time master of Vine videos, has done it again. This time he’s showing off a flame experiment on the International Space Station called the Flame Extinguishment Experiment-2 (FLEX-2).

“Ignition, jellyfish of fire, warp-drive finish!” wrote Wiseman on Vine yesterday (Aug. 22). He also posted a slow-motion capture of flames in action, which you can see below the jump. FLEX-2, as the name implies, is the second flame experiment on board the International Space Station. NASA states the goal is to understand how small fuel droplets burn in space.

“The FLEX-2 experiment studies how quickly fuel burns, the conditions required for soot to form, and how mixtures of fuels evaporate before burning. Understanding these processes could lead to the production of a safer spacecraft as well as increased fuel efficiency for engines using liquid fuel on Earth,” the agency wrote.

Rosetta Moving Closer to Comet 67P Hunting for Philae Landing Site

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

Animation Caption: Possible landing sites on Comet 67P/Churyumov-Gerasimenko. The model shows the illumination of the comets surface and regions under landing site consideration for the Philae lander on board ESA’s Rosetta spececraft . Credit: CNES

“The race is on” to find a safe and scientifically interesting landing site for the Philae lander piggybacked on ESA’s Rosetta spacecraft as it swoops in ever closer to the heavily cratered Comet 67P/Churyumov-Gerasimenko since arriving two weeks ago after a decade long chase of 6.4 billion kilometers (4 Billion miles).

Rosetta made history by becoming the first ever probe from Earth to orbit a comet upon arrival on Aug. 6, 2014.

The probe discovered an utterly alien and bizarre icy wanderer that science team member Mark McCaughrean, of ESA’s Science Directorate, delightedly calls a ‘Scientific Disneyland.’

“It’s just astonishing,” he said during a live ESA webcast of the Aug. 6 arrival event.

Now, another audacious and history making event is on tap – Landing on the comet!

To enable a safe landing, Rosetta is moving in closer to the comet to gather higher resolution imaging and spectroscopic data. When Rosetta arrived on Aug. 6, it was initially orbiting at a distance of about 100 km (62 miles). As of today, carefully timed thruster firings have brought it to within about 80 km distance. And it will get far closer.

Right now a top priority task for the science and engineering team leading Rosetta is “Finding a landing strip” for the Philae comet lander.

Philae’s landing on comet 67P is currently scheduled for Nov. 11, 2014. The 100 kg lander is 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.

The team responsibility for choosing the candidate sites comprises “the Landing Site Selection Group (LSSG), which comprises engineers and scientists from Philae’s Science, Operations and Navigation Centre (SONC) at CNES, the Lander Control Centre (LCC) at DLR, scientists representing the Philae Lander instruments, and supported by the ESA Rosetta team, which includes representatives from science, operations and flight dynamics,” according to an ESA statement.

This week the team is intensively combing through a preliminary list of 10 potential landing sites.

Over the weekend they will whittle the list down to five candidate landing sites for continued detailed analysis.

ESA will announce the Top 5 landing site candidates on Monday, Aug. 25.

This image of comet 67P/Churyumov-Gerasimenko shows the diversity of surface structures on the comet's nucleus. It was taken by the Rosetta spacecraft's OSIRIS narrow-angle camera on August 7, 2014. At the time, the spacecraft was 65 miles (104 kilometers) away from the 2.5 mile (4 kilometer) wide nucleus.  Credit:  ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA/Enhanced processing Marco Di Lorenzo/Ken Kremer
Where will Philae land?
This image of comet 67P/Churyumov-Gerasimenko shows the diversity of surface structures on the comet’s nucleus. It was taken by the Rosetta spacecraft’s OSIRIS narrow-angle camera on August 7, 2014. At the time, the spacecraft was 65 miles (104 kilometers) away from the 2.5 mile (4 kilometer) wide nucleus. Credit: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA/Enhanced processing Marco Di Lorenzo/Ken Kremer

The decision rests on the results of Rosetta’s ongoing global mapping campaign, including high resolution imaging from the OSIRIS and NAVCAM cameras and further observations from the other science instruments, especially MIRO, VIRTIS, ALICE, GIADA and ROSINA.

The surface criteria for a suitable landing site include day time landing illumination, a balance between day and night to allow the solar panels to recharge the batteries, avoiding steep slopes, large boulders and deep crevasses so it doesn’t topple over.

Of course the team also must consider the comet’s rotation period (12.4 hours) and axis of rotation (see animation at top). Sites near the equator offering roughly equal periods of day and night may be preferred.

The selection of the primary landing site is slated for mid-October after consultation between ESA and the lander team on a “Go/No Go” decision.

The three-legged lander will fire two 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 23 centimeters into and sample its incredibly varied surface.

Artist impression of Philae on the surface of comet 67P/Churyumov-Gerasimenko.  Credit: ESA/ATG medialab
Artist impression of Philae on the surface of comet 67P/Churyumov-Gerasimenko. Credit: ESA/ATG medialab

Read an Italian language version of this story by my imaging partner Marco Di Lorenzo – here

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

Ken Kremer

Surf Saturn’s Rings In Amazing Raw Cassini Images From This Week

Sunlight and shadow combine in this photo of Saturn and its rings taken Aug. 19, 2014. Credit: NASA/JPL/Space Science Institute

When Saturn is at its closest to Earth, it’s three-quarters of a billion miles away — or more than a billion kilometers! That makes these raw images from the ringed planet all the more remarkable.

Nearly every day, the Cassini spacecraft beams back what it sees at Saturn and the images are put up on this NASA website. This week, for example, it was checking out Saturn’s rings. We have a few of the pictures below, plus an older picture of the entire planet for reference.

Saturn’s rings are believed to be about 4.4 billion years old — that’s close to the age of the Solar System itself. Astronomers, however, have only known about them since the 1600s, when Galileo Galilei was trying to make sense of some funny-looking shapes on either side of the planet in his telescope.

According to NASA, the particles in the rings range from dust-sized to mountain-sized. Some of Saturn’s dozens of moons act as shepherds to the rings, keeping gaps open. You can read more about what we know about their origins here.

The Cassini spacecraft looks to the side of Saturn's rings in this picture from Aug. 19, 2014. Credit: NASA/JPL/Space Science Institute
The Cassini spacecraft looks to the side of Saturn’s rings in this picture from Aug. 19, 2014. Credit: NASA/JPL/Space Science Institute
Bands prominently feature in this raw picture of Saturn taken by the Cassini spacecraft Aug. 17, 2014. Credit: NASA/JPL/Space Science Institute
Bands prominently feature in this raw picture of Saturn taken by the Cassini spacecraft Aug. 17, 2014. Credit: NASA/JPL/Space Science Institute
Different shades shine in this raw image of Saturn's rings taken by the Cassini spacecraft taken Aug. 19, 2014. Credit: NASA/JPL/Space Science Institute
Different shades shine in this raw image of Saturn’s rings taken by the Cassini spacecraft taken Aug. 19, 2014. Credit: NASA/JPL/Space Science Institute
Saturn and its rings, as seen from above the planet by the Cassini spacecraft. Credit: NASA/JPL/Space Science Institute. Assembled by Gordan Ugarkovic.
Saturn and its rings, as seen from above the planet by the Cassini spacecraft. Credit: NASA/JPL/Space Science Institute. Assembled by Gordan Ugarkovic.

Watch A ‘Swan’ Fly Free From Its Trap In A Space Robotic Arm

Space Station robotic arm releases Cygnus after detachment from the ISS Harmony node. Credit: NASA TV

What does it look like when a cargo ship goes flying away from the International Space Station? This timelapse gives you a sense of what to expect. Here, you can see the handiwork of the (off-camera) Expedition 40 crew as they use the robotic Canadarm2 to let go of the Cygnus spacecraft.

“Great feeling to release a captured swan back into the wild last week,” wrote Alexander Gerst, an astronaut with the European Space Agency, on Twitter with the video.

Cygnus (Latin for “swan”, and a northern constellation) is a commercial spacecraft manufactured by Orbital Sciences Corp., and is one of two regular private visitors to the space station. The other one is Dragon, which is manufactured by SpaceX. Both companies have agreements with NASA to run periodic cargo flights to the station so that the astronauts can receive fresh equipment, food and personal items.

Both spacecraft are designed to be captured and released by Canadarm2, which the astronauts operate. When the Canadarm2 captures the spacecraft, it is referred to as a “berthing” (as opposed to a docking, when a spacecraft directly latches on to the station.)

Cygnus made a (planned) fiery re-entry Sunday that the astronauts captured on camera from their orbiting perch. Besides the inherent spectacular value of looking at the pictures, they could also be useful to help plan the eventual de-orbiting of the space station.

Curiosity Brushes ‘Bonanza King’ Target Anticipating Fourth Red Planet Rock Drilling

NASA’s Curiosity rover looks back to ramp with potential 4th drill site target at ‘Bonanza King’ rock outcrop in ‘Hidden Valley’ in this photo mosaic view captured on Aug. 6, 2014, Sol 711. Inset shows results of brushing on Aug. 17, Sol 722, that revealed gray patch beneath red dust. Note the rover’s partial selfie, valley walls, deep wheel tracks in the sand dunes and distant rim of Gale crater beyond the ramp. Navcam camera raw images stitched and colorized. Credit: NASA/JPL-Caltech/Ken Kremer-kenkremer.com/Marco Di Lorenzo

Curiosity brushes ‘Bonanza King’ drill target on Mars
NASA’s Curiosity rover looks back to ramp with 4th drill site target at ‘Bonanza King’ rock outcrop in ‘Hidden Valley’ in this photo mosaic view captured on Aug. 6, 2014, Sol 711. Inset shows results of brushing on Aug. 17, Sol 722, that revealed gray patch beneath red dust. Note the rover’s partial selfie, valley walls, deep wheel tracks in the sand dunes and distant rim of Gale crater beyond the ramp. Navcam camera raw images stitched and colorized.
Credit: NASA/JPL-Caltech/Ken Kremer-kenkremer.com/Marco Di Lorenzo[/caption]

Eagerly eyeing her next drill site on Mars, NASA’s Curiosity rover laid the groundwork by brushing the chosen rock target called ‘Bonanza King’ on Wednesday, Aug. 17, Sol 722, with the Dust Removal Tool (DRT) and collecting high resolution imagery with the Mast Camera (Mastcam) to confirm the success of the operation.

By brushing aside the reddish, more-oxidized dust scientists and engineers leading the mission observed a gray patch of less-oxidized rock material beneath that they anticipated seeing while evaluating the utility of ‘Bonanza King’ as the rover’s fourth candidate for Red Planet rock drilling and sampling.

To date, the 1-ton robot has drilled into three target rocks to collect sample powder for analysis by the rover’s onboard pair of the chemistry labs, SAM and CheMin, to analyze for the chemical ingredients that could support Martian microbes, if they ever existed.

Curiosity rover used the Dust Removal Tool on its robotic arm to brush aside reddish, more-oxidized dust, revealing a gray patch of less-oxidized rock material at a target called "Bonanza King," visible in this image from the rover's Mast Camera (Mastcam). Credit: NASA/JPL-Caltech/MSSS
Curiosity rover used the Dust Removal Tool on its robotic arm to brush aside reddish, more-oxidized dust, revealing a gray patch of less-oxidized rock material at a target called “Bonanza King,” visible in this image from the rover’s Mast Camera (Mastcam). Credit: NASA/JPL-Caltech/MSSS

So far everything is proceeding quite well.

The brushing activity also revealed thin, white, cross-cutting veins which is a further indication that liquid water flowed here in the distant past. Water is a prerequisite for life as we know it.

“They might be sulfate salts or another type of mineral that precipitated out of solution and filled fractures in the rock. These thin veins might be related to wider light-toned veins and features in the surrounding rock,” NASA said in a statement.

Based on these results and more from laser zapping with Curiosity’s Chemistry and Camera (ChemCam) instrument on Sol 719 (Aug. 14, 2014) the team decided to proceed ahead.

The imminent next step is to bore a shallow test hole into the brushed area which measures about about 2.5 inches (6 centimeters) across.

If all goes well with the “mini-drill” operation, the team will proceed quickly with full depth drilling to core a sample from the interior of the dinner plate sized rock slab for delivery to Curiosity’s two chemistry labs.

Bonanza King sits in a bright outcrop on the low ramp at the northeastern end of a spot leading in and out of an area called “Hidden Valley” which lies between Curiosity’s August 2012 landing site in Gale Crater and her ultimate destinations on Mount Sharp which dominates the center of the crater.

Just days ago, the rover team commanded a quick exit from “Hidden Valley” to backtrack out of the dune filled valley because of fears the six wheeled robot could get stuck in slippery sands extending the length of a football field.

As Curiosity drills, the rover team is also searching for an alternate safe path forward to the sedimentary layers of Mount Sharp.

To date, Curiosity’s odometer totals over 5.5 miles (9.0 kilometers) since landing inside Gale Crater on Mars in August 2012. She has taken over 178,000 images.

The main map here shows the assortment of landforms near the location of NASA's Curiosity Mars rover as the rover's second anniversary of landing on Mars nears. The gold traverse line entering from upper right ends at Curiosity's position as of Sol 705 on Mars (July 31, 2014). The inset map shows the mission's entire traverse from the landing on Aug. 5, 2012, PDT (Aug. 6, EDT) to Sol 705, and the remaining distance to long-term science destinations near Murray Buttes, at the base of Mount Sharp. The label "Aug. 5, 2013" indicates where Curiosity was one year after landing.    Credit: NASA/JPL-Caltech/Univ. of Arizona
The main map here shows the assortment of landforms near the location of NASA’s Curiosity Mars rover as the rover’s second anniversary of landing on Mars nears. The gold traverse line entering from upper right ends at Curiosity’s position as of Sol 705 on Mars (July 31, 2014). The inset map shows the mission’s entire traverse from the landing on Aug. 5, 2012, PDT (Aug. 6, EDT) to Sol 705, and the remaining distance to long-term science destinations near Murray Buttes, at the base of Mount Sharp. The label “Aug. 5, 2013” indicates where Curiosity was one year after landing. Credit: NASA/JPL-Caltech/Univ. of Arizona

Curiosity still has about another 2 miles (3 kilometers) to go to reach the entry way at a gap in the treacherous sand dunes at the foothills of Mount Sharp sometime later this year.

Mount Sharp is a layered mountain that dominates most of Gale Crater and towers 3.4 miles (5.5 kilometers) into the Martian sky and is taller than Mount Rainier.

“Getting to Mount Sharp is the next big step for Curiosity and we expect that in the Fall of this year,” Dr. Jim Green, NASA’s Director of Planetary Sciences at NASA Headquarters, Washington, DC, told me in an interview making the 2nd anniversary on Aug. 6.

“Drilling on the crater floor will provide needed geologic context before Curiosity climbs the mountain.”

1 Martian Year on Mars!  Curiosity treks to Mount Sharp in this photo mosaic view captured on Sol 669, June 24, 2014.    Navcam camera raw images stitched and colorized.   Credit: NASA/JPL-Caltech/Marco Di Lorenzo/Ken Kremer – kenkremer.com
1 Martian Year on Mars! Curiosity treks to Mount Sharp in this photo mosaic view captured on Sol 669, June 24, 2014. Navcam camera raw images stitched and colorized. Credit: NASA/JPL-Caltech/Marco Di Lorenzo/Ken Kremer – kenkremer.com

Read an Italian language version of this story by my imaging partner Marco Di Lorenzo – here

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

Ken Kremer

Cygnus Cargo Carrier Concludes with Fiery Reentry Aug. 17 – Amazing Astronaut Photos

Cygnus reentry [17 Aug 2014]. In 84 days Reid, Max and I will ride home inside such an amazing fireball! Credit: NASA/ESA/Alexander Gerst

Cygnus reentry [17 Aug 2014]. In 84 days Reid, Max and I will ride home inside such an amazing fireball! Credit: NASA/ESA/Alexander Gerst
Story updated[/caption]

Farewell Cygnus!

The flight of the Orbital Sciences’ Cygnus commercial cargo carrier concluded this morning, Sunday Aug. 17, in a spectacular fireball as planned upon reentry into Earth’s atmosphere at approximately 9:15 a.m. (EDT). And the fireworks were captured for posterity in a series of amazing photos taken by the Expedition 40 crew aboard the International Space Station (ISS). See astronaut photos above and below.

ESA astronaut Alexander Gerst and Russian Cosmonaut Maxim Suraev documented the breakup and disintegration of Cygnus over the Pacific Ocean east of New Zealand today following precise thruster firings commanded earlier by Orbital Sciences mission control in Dulles, VA, that slowed the craft and sent it on a preplanned destructive reentry trajectory.

Cygnus reentry on 17 Aug 2014.  Credit: NASA/ESA/Alexander Gerst
Cygnus reentry on 17 Aug 2014. Credit: NASA/ESA/Alexander Gerst

Gerst was truly moved by the spectacle of what he saw as a portent for his voyage home inside a Soyuz capsule barely three months from now, with crew mates Maxim Suraev and NASA astronaut Reid Wiseman.

“In 84 days Reid, Max and I will ride home inside such an amazing fireball! In 84 Tagen werden Reid, Max & ich in solch einem Feuerball nach Hause fliegen!” – Gerst wrote from the station today in his social media accounts with the fireball photos.

Cygnus was loaded with no longer needed trash and fell harmlessly over an uninhabited area of the South Pacific Ocean.

Today’s spectacular reentry fireworks concluded the hugely successful flight of the Cygnus resupply ship named in honor of astronaut Janice Voss on the Orb-2 mission.

ISS Crewmate Max Suraev just caught this amazing photo of Cygnus Orb2 disintegrating on reentry.   Credit: Roscosmos/ Max Suraev via ISS crew mate Reid Wiseman
ISS Crew mate Max Suraev just caught this amazing photo of Cygnus Orb2 disintegrating on reentry. Credit: Roscosmos/ Max Suraev via ISS crew mate Reid Wiseman

The astronaut photos may be helpful to engineers planning the mechanics of the eventual deorbiting of the ISS at some point in the hopefully distant future.

Cygnus finished it’s month-long resupply mission two days ago when it was unberthed from the International Space Station (ISS) on Friday, Aug. 15, and station astronaut Alex Gerst released the vessel from the snares of the Canadarm2 robotic arm at 6:40 a.m. EDT.

“From start to finish, we are very pleased with the results of this mission. Our team is proud to be providing essential supplies to the ISS crew so they can carry out their vital work in space,” said Mr. Frank Culbertson, Executive Vice President and General Manager of Orbital’s Advanced Programs Group, in a statement.

Goodbye, Cygnus!  Credit: NASA/ESA/Alexander Gerst
Goodbye, Cygnus! Credit: NASA/ESA/Alexander Gerst

Cygnus roared to orbit during a spectacular blastoff on July 13 atop an Orbital Sciences Corp. Antares rocket on the Orb-2 mission at 12:52 p.m. (EDT) from the beachside Pad 0A at the Mid-Atlantic Regional Spaceport on NASA’s Wallops Flight Facility on the Eastern Shore of Virginia.

It arrived at the station after a three day chase and was captured with the 58-foot (17-meter) long Canadian robotic arm on July 16, 2014 by Station Commander Steve Swanson working at a robotics workstation in the cupola.

Orbital Sciences Corporation Antares rocket and Cygnus spacecraft blasts off on July 13  2014 from Launch Pad 0A at NASA Wallops Flight Facility , VA, on the Orb-2 mission and loaded with over 3000 pounds of science experiments and supplies for the crew aboard the International Space Station. Credit: Ken Kremer - kenkremer.com
Orbital Sciences Corporation Antares rocket and Cygnus spacecraft blasts off on July 13 2014 from Launch Pad 0A at NASA Wallops Flight Facility , VA, on the Orb-2 mission and loaded with over 3000 pounds of science experiments and supplies for the crew aboard the International Space Station. Credit: Ken Kremer – kenkremer.com

Cygnus arrival at the ISS took place on the 45th anniversary of the launch of Apollo 11 on July 16, 1969 on America’s first manned moon landing mission by Neil Armstrong, Buzz Aldrin and Michael Collins.

The US/Italian built pressurized Cygnus cargo freighter delivered 1,657 kg (3653 lbs) of cargo to the ISS Expedition 40 crew including over 700 pounds (300 kg) of science experiments and instruments, crew supplies, food, water, computer equipment, spacewalk tools and student research experiments.

This mission dubbed Orbital-2, or Orb-2, marks the second of at least eight operational cargo resupply missions to the ISS under Orbital’s Commercial Resupply Services (CRS) contract with NASA.

Cygnus Orb-2 spacecraft ‘Janice Voss’ departed ISS at 6:40 a.m.  EDT, Friday, Aug. 15, 2014.  Credit: NASA TV
Cygnus Orb-2 spacecraft ‘Janice Voss’ departed ISS at 6:40 a.m. EDT, Friday, Aug. 15, 2014. Credit: NASA TV

The next resupply launch of the private Cygnus Orb-3 craft atop the Orbital Sciences’ Antares rocket is currently scheduled for October 2014 from NASA’s Wallops Flight Facility, VA.

Orbital Sciences was awarded a $1.9 Billion supply contract by NASA to deliver 20,000 kilograms (44,000 pounds) of research experiments, crew provisions, spare parts and hardware for 8 flights to the ISS through 2016 under the Commercial Resupply Services (CRS) initiative.

“With three fully successful cargo delivery missions now complete, it is clear our public-private partnership with NASA is proving to be a positive asset to the productivity of the ISS. We are looking forward to the next Antares launch and the Cygnus cargo delivery mission that is coming up in about two months,” said Culbertson.

Orbital Sciences Corporation Antares rocket and Cygnus spacecraft prior to blast off on July 13  2014 from Launch Pad 0A at NASA Wallops Flight Facility , VA, on the Orb-2 mission bound for the International Space Station.  Credit: Ken Kremer - kenkremer.com
Orbital Sciences Corporation Antares rocket and Cygnus spacecraft prior to blast off on July 13 2014 from Launch Pad 0A at NASA Wallops Flight Facility , VA, on the Orb-2 mission bound for the International Space Station. Credit: Ken Kremer – kenkremer.com

Stay tuned here for Ken’s continuing ISS, Rosetta, OCO-2, GPM, Curiosity, Opportunity, Orion, SpaceX, Boeing, Orbital Sciences, MAVEN, MOM, Mars and more Earth & Planetary science and human spaceflight news.

Ken Kremer

Curiosity Reverses Back from Martian Valley of Slippery Sand and Finds Fourth Rock Drilling Candidate at ‘Bonanza King’

NASA’s Curiosity rover looks back to ramp with 4th drill site target at ‘Bonanza King’ rock outcrop in ‘Hidden Valley’ at site marking her 2nd anniversary on Mars, as shown in this photo mosaic view captured on Aug. 6, 2014, Sol 711. Note the rover’s partial selfie, valley walls, deep wheel tracks in the sand dunes and distant rim of Gale crater beyond the ramp. Navcam camera raw images stitched and colorized. Credit: NASA/JPL-Caltech/Ken Kremer-kenkremer.com/Marco Di Lorenzo

NASA’s Curiosity rover looks back to ramp with 4th drill site target at ‘Bonanza King’ rock outcrop in ‘Hidden Valley’ at site marking her 2nd anniversary on Mars, as shown in this photo mosaic view captured on Aug. 6, 2014, Sol 711. Note the rover’s partial selfie, valley walls, deep wheel tracks in the sand dunes and distant rim of Gale crater beyond the ramp. Navcam camera raw images stitched and colorized.
Credit: NASA/JPL-Caltech/Ken Kremer-kenkremer.com/Marco Di Lorenzo[/caption]

Not wanting to get stuck in a rut, Curiosity’s handlers have commanded NASA’s SUV-sized rover to reverse course and drive out of a potentially hazardous Martian valley of slippery sand with poor wheel traction and instead backtrack towards an enticing nearby spot that the team feels could be the fourth candidate for rock drilling – and thereby widen the scope of the story of habitable environments on the Red Planet.

The new drilling target under up close evaluation right now is named ‘Bonanza King’ – shown in our photo mosaic above.

Bonanza King was chosen after the six wheeled rover unexpectedly experienced significant wheel slippage in the past week while driving over an extended dune field of sandy ripples that basically stopped forward movement inside the Martian valley.

The team was thus in a quandary over whether to push forward on a route through the loose sands of “Hidden Valley” and possibly risk getting mired in a hidden sand trap or drive backwards over a field of sharp rocks on the “Zabriskie plateau” and beyond that are certain to tear further holes in the wheels.

Drilling Candidate Site 'Bonanza King' on Mars.    This image from the Mast Camera (Mastcam) on NASA's Curiosity Mars rover shows a portion of the pale rock outcrop that includes the "Bonanza King" target chosen for evaluation as the mission's fourth rock-drilling site. Raised ridges on the flat rocks -- possible mineral veins -- are visible at upper and middle right. Tread marks from one of Curiosity's wheels are visible in the lower half of the image from Sol 707, Aug. 12, 2014.  Credit: NASA/JPL-Caltech/MSSS
Drilling Candidate Site ‘Bonanza King’ on Mars. This image from the Mast Camera (Mastcam) on NASA’s Curiosity Mars rover shows a portion of the pale rock outcrop that includes the “Bonanza King” target chosen for evaluation as the mission’s fourth rock-drilling site. Raised ridges on the flat rocks — possible mineral veins — are visible at upper and middle right. Tread marks from one of Curiosity’s wheels are visible in the lower half of the image from Sol 707, Aug. 12, 2014. Credit: NASA/JPL-Caltech/MSSS

As reported here last week on the occasion of her 2nd anniversary on Mars since the dramatic touchdown inside Gale Crater on Aug. 6, 2012, Curiosity had been driving merrily through the supposed safe valley of sandy ripples of “Hidden Valley.” She was approaching a bedrock unit named “Pahrump Hills” that for the first time is actually part of the humongous mountain named Mount Sharp she will soon scale and which is the primary science destination of the mission.

But rather soon after driving over a low hump from Zabriskie plateau (see our mosaic below) into Hidden Valley, the robot experienced wheel slippage in the ripples of sand filling the crater floor which was much higher than anticipated. And even worse than comparable test drives in a practice sand lot at JPL.

Curiosity rover looks back to the rocky plains of the Zabriskie plateau from sandy ramp into ‘Hidden Valley’ with 4th drill site target at ‘Bonanza King’ rock outcrop as shown in this photo mosaic view captured on Aug. 14, 2014, Sol 719.  Sharp edged rocks at Zabriskie tore new holes into rover wheels.   Navcam camera raw images stitched and colorized.  Credit: NASA/JPL-Caltech/Marco Di Lorenzo/Ken Kremer-kenkremer.com/
Curiosity rover looks back to the rocky plains of the Zabriskie plateau from sandy ramp into ‘Hidden Valley’ with 4th drill site target at ‘Bonanza King’ rock outcrop as shown in this photo mosaic view captured on Aug. 14, 2014, Sol 719. Sharp edged rocks at Zabriskie tore new holes into rover wheels. Navcam camera raw images stitched and colorized.
Credit: NASA/JPL-Caltech/Marco Di Lorenzo/Ken Kremer-kenkremer.com

The sandy ripples extend out to the sloping valley walls with no end in sight.

“We need to gain a better understanding of the interaction between the wheels and Martian sand ripples, and Hidden Valley is not a good location for experimenting,” said Curiosity Project Manager Jim Erickson of NASA’s Jet Propulsion Laboratory in Pasadena, California, in a statement.

And since Hidden Valley is as long as a football field and has only two navigable exits at the northeastern and southwestern ends (see map below), the team was forced to drive back to the entrance way at the northern end to consider an alternative route forward to the base of Mount Sharp.

In the meantime while they evaluate the way forward, the team decided that Bonanza King offers similar science to what scientists anticipate at the outcrops at “Pahrump Hills”- a preview of a geological unit that is part of the base of Mount Sharp for the first time since landing rather than still belonging to the floor of Gale Crater.

“Geologically speaking, we can tie the Bonanza King rocks to those at Pahrump Hills. Studying them here will give us a head start in understanding how they fit into the bigger picture of Gale Crater and Mount Sharp,” said Curiosity Deputy Project Scientist Ashwin Vasavada of JPL, in a statement.

Bonanza King sits in an bright outcrop on the low ramp leading in and out of Hidden Valley.

Curiosity rover up close view of ‘Bonanza King’ rock outcrop and 4th drill target looking down from ramp and back into ‘Hidden Valley’ and hazardous dune field of sandy ripples on Aug. 14, 2014, Sol 719.  Wheel tracks show where Curiosity drove into the valley, and back out again, earlier in August 2014. The largest of the individual flat rocks in the foreground are a few inches (several centimeters) across. Hazcam camera raw image flattened and colorized.  Credit: NASA/JPL-Caltech/Marco Di Lorenzo/Ken Kremer - kenkremer.com
Curiosity rover up close view of ‘Bonanza King’ rock outcrop and 4th drill target looking down from ramp and back into ‘Hidden Valley’ and hazardous dune field of sandy ripples on Aug. 14, 2014, Sol 719. Wheel tracks show where Curiosity drove into the valley, and back out again, earlier in August 2014. The largest of the individual flat rocks in the foreground are a few inches (several centimeters) across. Hazcam camera raw image flattened and colorized. Credit: NASA/JPL-Caltech/Marco Di Lorenzo/Ken Kremer – kenkremer.com

It looks like a pale paving stone. Since its location within the geological layers visible on the ramp is similar to what was expected at the Pahrump Hills outcrop, it’s very appealing to the science team.

Furthermore when one of the rovers wheel’s drove over the outcrop, it cracked open one of the rocks and exposed bright interior material, possibly from mineral veins – which is super exciting from a science perspective as a potential marker for flowing liquid water.

Right now the team is collecting spectral data with the science instruments to assess its science utility and is planning a super fast drilling campaign, far shorter than the prior three.

The plan would be to core a sample from the interior of the dinner plate sized rock slab for delivery to Curiosity’s pair of the onboard chemistry labs, SAM and CheMin to analyze for the chemical ingredients to support miartin microbes, if they ever existed.

“This outcrop on the ramp is too appealing to pass up,” Vasavada said.

The main map here shows the assortment of landforms near the location of NASA's Curiosity Mars rover as the rover's second anniversary of landing on Mars nears. The gold traverse line entering from upper right ends at Curiosity's position as of Sol 705 on Mars (July 31, 2014). The inset map shows the mission's entire traverse from the landing on Aug. 5, 2012, PDT (Aug. 6, EDT) to Sol 705, and the remaining distance to long-term science destinations near Murray Buttes, at the base of Mount Sharp. The label "Aug. 5, 2013" indicates where Curiosity was one year after landing.    Credit: NASA/JPL-Caltech/Univ. of Arizona
The main map here shows the assortment of landforms near the location of NASA’s Curiosity Mars rover as the rover’s second anniversary of landing on Mars nears. The gold traverse line entering from upper right ends at Curiosity’s position as of Sol 705 on Mars (July 31, 2014). The inset map shows the mission’s entire traverse from the landing on Aug. 5, 2012, PDT (Aug. 6, EDT) to Sol 705, and the remaining distance to long-term science destinations near Murray Buttes, at the base of Mount Sharp. The label “Aug. 5, 2013” indicates where Curiosity was one year after landing. Credit: NASA/JPL-Caltech/Univ. of Arizona

To date, Curiosity’s odometer totals over 5.5 miles (9.0 kilometers) since landing inside Gale Crater on Mars in August 2012. She has taken over 178,000 images.

Curiosity still has about another 2 miles (3 kilometers) to go to reach the entry way at a gap in the treacherous sand dunes at the foothills of Mount Sharp sometime later this year.

Mount Sharp is a layered mountain that dominates most of Gale Crater and towers 3.4 miles (5.5 kilometers) into the Martian sky and is taller than Mount Rainier.

“Getting to Mount Sharp is the next big step for Curiosity and we expect that in the Fall of this year,” Dr. Jim Green, NASA’s Director of Planetary Sciences at NASA Headquarters, Washington, DC, told me in an interview making the 2nd anniversary on Aug. 6.

Up close view of hole in one of rover Curiosity’s six wheels caused by recent driving over rough Martian rocks. Mosaic assembled from Mastcam raw images taken on Dec. 22, 2013 (Sol 490).  Credit: NASA/JPL/MSSS/Ken Kremer - kenkremer.com/Marco Di Lorenzo
Up close view of hole in one of rover Curiosity’s six wheels caused by driving over rough Martian rocks. Mosaic assembled from Mastcam raw images taken on Dec. 22, 2013 (Sol 490). Credit: NASA/JPL/MSSS/Ken Kremer – kenkremer.com/Marco Di Lorenzo

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

Ken Kremer

1 Martian Year on Mars!  Curiosity treks to Mount Sharp in this photo mosaic view captured on Sol 669, June 24, 2014.    Navcam camera raw images stitched and colorized.   Credit: NASA/JPL-Caltech/Marco Di Lorenzo/Ken Kremer – kenkremer.com
1 Martian Year on Mars!
Curiosity treks to Mount Sharp in this photo mosaic view captured on Sol 669, June 24, 2014. Navcam camera raw images stitched and colorized. Credit: NASA/JPL-Caltech/Marco Di Lorenzo/Ken Kremer – kenkremer.com
2 Earth Years on Mars!  NASA’s Curiosity rover celebrated the 2nd anniversary on Mars at ‘Hidden Valley’ as shown in this photo mosaic view captured on Aug. 6, 2014, Sol 711.   Note the valley walls, rover tracks and distant crater rim.  Navcam camera raw images stitched and colorized.  Credit: NASA/JPL-Caltech/Ken Kremer-kenkremer.com/Marco Di Lorenzo
2 Earth Years on Mars! NASA’s Curiosity rover celebrated the 2nd anniversary on Mars at ‘Hidden Valley’ as shown in this photo mosaic view captured on Aug. 6, 2014, Sol 711. Note the valley walls, rover tracks and distant crater rim. Navcam camera raw images stitched and colorized. Credit: NASA/JPL-Caltech/Ken Kremer-kenkremer.com/Marco Di Lorenzo