Look out below! NASA’s MESSENGER spacecraft is at its lowest altitude of any spacecraft above Mercury, and over the next couple of months it’s going to get even lower above the planet.
The spacecraft — whose name stands for MErcury Surface, Space ENvironment, GEochemistry, and Ranging — is doing a close shave above the sun’s closest planet to look at the polar ice and its gravity and magnetic fields.
“This dip in altitude is allowing us to see Mercury up close and personal for the first time,” stated Ralph McNutt, the project scientist for MESSENGER at the Johns Hopkins University Applied Physics Laboratory (APL).
MESSENGER is the first-ever mission to orbit Mercury. It arrived at the planet in March 2011 and has now spent three Earth years or 14 Mercury years examining the cratered planet and its environment. The campaign has revealed many secrets about Mercury, ranging from the discovery of ice deposits to changes in its tenuous atmosphere due to the Sun.
The spacecraft made its lowest approach above the planet on July 25, at 62 miles (100 kilometers) and will keep moving lower due to “progressive changes” in its orbit, APL stated. By Aug. 19, the minimum altitude will be 50 km (31 miles), and then the closet approach will be on Sept. 12 at 25 km (16 miles).
After that, the team will temporarily raise the spacecraft’s orbit again before it makes a planned impact on the planet’s surface in March 2015. The NASA mission is operated and managed by Johns Hopkins University.
GODDARD SPACE FLIGHT CENTER, MD – The huge Sunshield test unit for NASA’s James Webb Space Telescope (JWST) has been successfully unfurled for the first time in a key milestone ahead of the launch scheduled for October 2018.
Engineers stacked and expanded the tennis-court sized Sunshield test unit last week inside the cleanroom at a Northrop Grumman facility in Redondo Beach, California.
NASA reports that the operation proceeded perfectly the first time during the test of the full-sized unit.
The Sunshield and every other JWST component must unfold perfectly and to precise tolerances in space because it has not been designed for servicing or repairs by astronaut crews voyaging beyond low-Earth orbit into deep space, William Ochs, Associate Director for JWST at NASA Goddard told me in an exclusive interview.
The five layered Sunshield is the largest component of the observatory and acts like a parasol.
Its purpose is to protect Webb from the suns heat and passively cool the telescope and its quartet of sensitive science instruments via permanent shade to approximately 45 kelvins, -380 degrees F, -233 C.
The kite-shaped Sunshield provides an effective sun protection factor or SPF of 1,000,000. By comparison suntan lotion for humans has an SPF of 8 to 40.
The extreme cold is required for the telescope to function in the infrared (IR) wavelengths and enable it to look back in time further than ever before to detect distant objects.
The shield separates the observatory into a warm sun-facing side and a cold anti-sun side.
Its five thin membrane layers also provides a stable thermal environment to keep the telescopes 18 primary mirror segments properly aligned for Webb’s science investigations.
JWST is the successor to the 24 year old Hubble Space Telescope and will become the most powerful telescope ever sent to space.
The Webb Telescope is a joint international collaborative project between NASA, the European Space Agency (ESA) and the Canadian Space Agency (CSA).
NASA has overall responsibility and Northrop Grumman is the prime contractor for JWST.
Webb will launch folded up inside the payload fairing of an ESA Ariane V ECA rocket from the Guiana Space Center in Kourou, French Guiana.
In launch configuration, the Sunshield will surround the main mirrors and instruments like an umbrella.
During the post launch journey to the L2 observing orbit at the second Sun-Earth Lagrange point nearly a million miles (1.5 million Km) from Earth, the telescopes mirrors and sunshield will begin a rather complex six month long unfolding and calibration process.
The science instruments have been mounted inside the ISIM science module and are currently undergoing critical vacuum chamber testing at NASA Goddard Space Flight Center which provides overall management and systems engineering.
The mirror segments have arrived at NASA Goddard where I’ve had the opportunity to observe and report on work in progress.
Stay tuned here for Ken’s continuing JWST, MMS, ISS, Curiosity, Opportunity, SpaceX, Orbital Sciences, Boeing, Orion, MAVEN, MOM, Mars and more Earth and Planetary science and human spaceflight news.
If you spent 120 days cooped up in a small habitat with six people, what’s the first thing you’d want to do upon emerging? Celebration would likely be one of them, and you can watch the festivities as the HI-SEAS crew leaves their Mars simulation later today.
The broadcast takes place between 2 p.m. EDT and 4 p.m. EDT (6 p.m. and 8 p.m. UTC) and you can watch everything above. As with all live events, the schedule can always change at the last minute.
HI-SEAS (an acronym for Hawaii Space Exploration Analog and Simulation) is one of a number of simulated space missions that have taken place on Earth. The Mars Society regularly runs missions at its Mars Desert Research Station and Flashline Arctic Mars Station. There also was an effort called Mars 500, which saw a crew spend more than 500 days in a habitat to simulate the length of a Mars mission.
The goal of simulations such as these is to test out processes that could be used in space, and also to see how humans behave. There is considerable debate about how accurate these simulations are in comparison to spaceflight. There are obvious physical differences such as gravity, and some argue that the psychological aspects are different as well — in many cases, crews can easily open a door to escape others on Earth, while in space it’s not that simple.
As is the usual for space missions, though, HI-SEAS has strived to keep the public apprised of their activities through pictures and through videos. Coming up sometime afterwards will be the results of the scientific experiments.
Full disclosure: I am a classmate of HI-SEAS crew member Tiffany Swarmer’s in the Space Studies department at the University of North Dakota. She and the department have not asked me to write this article, nor were they aware of its publication before it went online.
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.”
Remember during the government shutdown when it looked as though a NASA Mars mission would be delayed? Launch preparations continued because delaying the Mars Atmosphere and Volatile EvolutioN (MAVEN) spacecraft — which could have pushed its window back by years — would cause “imminent risk to life or property”, administrator Charles Bolden told Universe Today in November.
Both NASA’s Mars Reconnaissance Orbiter and Mars Odyssey currently provide a vital data link to send huge streams of information from the rovers on the surface, Opportunity and Curiosity. (And the Mars 2020 rover is coming up in a few years, too.) While both orbiters are working well, they are both well over their design lifetimes. MAVEN is now on its way to Mars and should get there in September.
MAVEN’s mission, however, is only designed to last for a year. While it could last longer, NASA is already thinking ahead for satellite backups — especially for the 2020s. And that could include commercial participation, according to a new request for information the agency put out this week.
“NASA has no scheduled Mars science orbiters after MAVEN arrives on the Red Planet in the fall,” the agency warned in a press release. “This creates the need to identify cost-effective options to ensure continuity of reliable, high-performance telecommunications relay services for the future.”
The solicitation (which you can see here) proposes to have NASA purchase telecommunications services from some “commercial service provider” that would be responsible for operating and owning the satellites. This isn’t necessarily open only to industry, either. NASA says that organizations could include commercial providers, its own centers, universities, non-profits, federally funded research and development centers and even U.S. government and international organizations.
“We are looking to broaden participation in the exploration of Mars to include new models for government and commercial partnerships,” stated John Grunsfeld, associate administrator of NASA’s science mission directorate. “Depending on the outcome, the new model could be a vital component in future science missions and the path for humans to Mars.”
And it’s possible these orbiters could explore new technologies for Mars — specifically, laser/optical communications, which were used to great success on the Lunar Atmosphere and Dust Environment Explorer (LADEE) mission. And other laser missions are coming up. This could make it easier to send back movies from Mars as well as still pictures.
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.
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.
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.
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!”
Stay tuned here for Ken’s Earth & Planetary science and human spaceflight news.
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.
The winged Dream Chaser mini-shuttle under development by Sierra Nevada Corp. (SNC) has successfully completed a series of risk reduction milestone tests on key flight hardware systems thereby moving the private reusable spacecraft closer to its critical design review (CDR) and first flight under NASA’s Commercial Crew Program aimed at restoring America’s indigenous human spaceflight access to low Earth orbit and the space station.
SNC announced that it passed NASA’s Milestones 9 and 9a involving numerous Risk Reduction and Technology Readiness Level (TRL) advancement tests of critical Dream Chaser® systems under its Commercial Crew Integrated Capability (CCiCap) agreement with the agency.
Seven specific hardware systems underwent extensive testing and passed a major comprehensive review with NASA including; the Main Propulsion System, Reaction Control System, Crew Systems, Environmental Control and Life Support Systems (ECLSS), Structures, Thermal Control (TCS) and Thermal Protection Systems (TPS).
The tests are among the milestones SNC must complete to receive continued funding from the Commercial Crew Integrated Capability initiative (CCiCAP) under the auspices of NASA’s Commercial Crew Program.
Over 3,500 tests were involved in completing the Risk Reduction and TRL advancement tests on the seven hardware systems whose purpose is to significantly retire overall program risk enable a continued maturation of the Dream Chaser’s design.
Dream Chaser is a reusable lifting-body design spaceship that will carry a mix of cargo and up to a seven crewmembers to the ISS. It will also be able to land on commercial runways anywhere in the world, according to SNC.
“By thoroughly assessing and mitigating each of the previously identified design risks, SNC is continuing to prove that Dream Chaser is a safe, robust, and reliable spacecraft,” said Mark N. Sirangelo, corporate vice president of SNC’s Space Systems, in a statement.
“These crucial validations are vital steps in our Critical Design Review and in showing that we have a very advanced and capable spacecraft. This will allow us to quickly and confidently move forward in restoring cutting-edge transportation to low-Earth orbit from the U.S.”
The Dream Chaser is among a trio of US private sector manned spaceships being developed with seed money from NASA’s Commercial Crew Program in a public/private partnership to develop a next-generation crew transportation vehicle to ferry astronauts to and from the International Space Station by 2017 – a capability totally lost following the space shuttle’s forced retirement in 2011.
The SpaceXDragon and BoeingCST-100 ‘space taxis’ are also vying for funding in the next round of contracts to be awarded by NASA around August/September 2014.
“Our partners are making great progress as they refine their systems for safe, reliable and cost-effective spaceflight,” said Kathy Lueders, manager of NASA’s Commercial Crew Program.
“It is extremely impressive to hear and see the interchange between the company and NASA engineering teams as they delve into the very details of the systems that help assure the safety of passengers.”
After completing milestones 9 and 9a, SNC has now received 92% of its total CCiCAP Phase 1 NASA award of $227.5 million.
“We are on schedule to launch our first orbital flight in November of 2016, which will mark the beginning of the restoration of U.S. crew capability to low-Earth orbit,” says Sirangelo.
Dream Chaser measures about 29 feet long with a 23 foot wide wing span and is about one third the size of NASA’s space shuttle orbiters.
It will launch atop a United Launch Alliance (ULA) Atlas V rocket from Cape Canaveral Launch Complex 41 in Florida.
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.
The Dream Chaser design builds on the experience gained from NASA Langley’s earlier exploratory engineering work with the HL-20 manned lifting-body vehicle.
Read my prior story detailing the wind tunnel testing milestone – here.
Stay tuned here for Ken’s continuing Sierra Nevada, Boeing, SpaceX, Orbital Sciences, commercial space, Orion, Curiosity, Mars rover, MAVEN, MOM and more planetary and human spaceflight news.
We’ve got vertigo watching this video, but in a good way! This is a sped-up view of Earth from the International Space Station from the Cupola, a wraparound window that is usually used for cargo ship berthings and Earth observations.
In the video you can see a solar array from the space station gliding by the view on the left, and Canadarm2 (the robotic arm used for dockings) just barely visible on the right side, near the end.
Behind the camera is the prolific video poster Reid Wiseman, an Expedition 40/41 NASA astronaut who has been quite active on social media. He’s been posting pictures of the Earth on Twitter as well as numerous other Vine videos.
45 years ago on July 20, 1969, NASA astronaut and Apollo 11 Commander Neil Armstrong became the first human being to set foot on another celestial body when he stepped off the Apollo 11 Lunar Module Eagle and onto our Moon’s utterly alien surface.
Today, July 21, 2014, NASA officially renamed a historic facility at the Kennedy Space Center vital to human spaceflight in honor of Neil Armstrong during a a 45th anniversary ceremony at what until today was known as the ‘Operations and Checkout Building’ or O & C.
On that first moonwalk, Armstrong was accompanied by fellow NASA astronaut Buzz Aldrin on a two and a half hour excursion that lasted into the early morning hours of July 21. They came in peace representing all mankind.
Today’s ceremony was broadcast on NASA TV and brought together numerous dignitaries including Armstrong’s surviving crewmates Buzz Aldrin and Command Module pilot Mike Collins, Apollo 13 Commander Jim Lovell who was also Apollo 11’s backup commander, NASA Administrator Charlie Bolden, Kennedy Space Center Director Bob Cabana, and Armstrong’s family members including his sons Rick and Mark Armstrong who all spoke movingly at the dedication.
They were joined via a live feed from space by two NASA astronauts currently serving aboard the International Space Station (ISS) – Expedition 40 crew member Rick Wiseman and Commander Steve Swanson.
The backdrop for the ceremony was the Orion crew capsule, NASA’s next generation human rated spaceflight vehicle which is currently being assembled in the facility and is set to launch on its maiden unmanned test flight in December 2014. Orion will eventually carry US astronauts on journey’s to deep space destinations to the Moon, Asteroids and Mars.
Many of Armstrong’s colleagues and other officials working on Orion and NASA’s human spaceflight missions also attended.
The high bay of what is now officially the ‘Neil Armstrong Operations and Checkout Building’ was built in 1964 and previously was known as the Manned Spacecraft Operations Building.
It has a storied history in human spaceflight. It was used to process the Gemini spacecraft including Armstrong’s Gemini 8 capsule. Later it was used during the Apollo program to process and test the command, service and lunar modules including the Apollo 11 crew vehicles that were launched atop the Saturn V moon rocket. During the shuttle era it housed the crew quarters for astronauts KSC training and for preparations in the final days leading to launch.
“45 years ago, NASA’s journey to land the first human on the Moon began right here,” NASA Administrator Charlie Bolden said at the ceremony. “It is altogether fitting that today we rename this facility the Neil Armstrong Operations and Checkout Building. Throughout his life he served his country as an astronaut, an aerospace engineer, a naval aviator, a test pilot and a university professor, and he constantly challenged all of us to expand the boundaries of the possible.”
“He along with his crewmates, Buzz Aldrin and Michael Collins, are a bridge from NASA’s historic journey to the moon 45 years ago to our path to Mars today.”
The Apollo 11 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 to fulfill the lunar landing quest set by President John F. Kennedy early in the decade.
Armstrong and Aldrin 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.
“Houston, Tranquility Base here. The Eagle has landed !,” Armstrong called out and emotional applause erupted at Mission Control – “You got a bunch of guys about to turn blue.”
Armstrong’s immortal first words:
“That’s one small step for [a] man, one giant leap for mankind.”
During their 2 ½ hours 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.”
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.
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
Michael Collins concluded the ceremony with this tribute:
“He would not have sought this honor, that was not his style. But I think he would be proud to have his name so closely associated with the heart and the soul of the space business.”
“On Neil’s behalf, thank you for what you do every day.”
Stay tuned here for Ken’s Earth & Planetary science and human spaceflight news.