Archive for the ‘ISS’ Category

Weekly Links

Down to Earth

Veteran astronaut Steve Swanson, who flew on the space shuttle and commanded the ISS last year, is retiring from NASA. According to his Wikipedia page, he has spent an impressive 195 days in space with almost 28 hours of spacewalk time across 5 EVAs. This leaves NASA with 45 active astronauts (which doesn’t count ESA and JAXA astronauts who are qualified to fly to ISS).

Last week an important engine test in the development of the new SLS rocket was conducted at Stennis Space Center. The RS-25 engine was run for almost a full ten minuets. Here’s a video (test starts at 31:15).

In Orbit

Last Monday, August 10th, two Russian Cosmonauts went outside the ISS for a spacewalk. Padalka and Kornienko spent about five and a half hours outside. It was Padalka’s tenth spacewalk, which should put him nicely on this list once it is updated.

Later in the week, on Friday morning, a Russian Progress cargo craft undocked from the aft port of the ISS. That port will be empty until Soyuz 42S does a “relocate” from the Poisk port later this fall. The relocate is needed to free up Poisk for the docking of the next Soyuz. There will be three Soyuz onboard for a direct handover this fall.

Some cool stuff happened inside the ISS this past week as well. The astronauts were able to eat some red romaine lettuce grown on the space station in the “VEGGIE” experiment.

Japanese astronaut Kimiya Yui did some remote robotics experiments.

The launch of the next ISS resupply flight from Japan has been delayed to Monday, due to bad weather.

Also in ISS cargo news, Orbital Sciences announced they will launch not just one but two or more of their Cygnus cargo resupply missions on someone else’s rocket. Orbital is working hard to recertify their Antares rocket with new Russian engines, following the loss of one of their rockets last October. In the meantime, they are buying Atlas V rockets from United Launch Alliance in order to fulfill their NASA contract.

Around the Solar System

Comet 67P/Churyumov-Gerasimenko has reached perihelion (closest point to the sun), which has made the comet rather “active”. Check out these images from Rosetta, in orbit about the comet.

How cool is this? There is evidence of cryovolcanism (ice volcanoes) on Pluto.

Speaking of Pluto, here’s an awesome simulation of the New Horizons flyby in real-time, based on actually imagery from the spacecraft.

If you love the ins and outs of Martian rover exploration, here’s a comprehensive update on what the Curiosity rover has been up to.

Weekly Links

Down to Earth

Russia recently made it official that they are willing to fund joint operations of ISS through 2024. Meanwhile, NASA sent Russia almost half of a billion dollars to renew the contract for sending astronauts to the ISS on Soyuz spacecraft. The new contract is to protect against further slips in the commercial crew program schedule, as insufficient funds are being allocated by Congress, according to administrator Charlie Bolden.

NASA’s ISS program manager, Mike Suffredini, is retiring from NASA. His replacement will be Kirk Shireman.

Buzz Aldrin has taken a faculty position at Florida Tech.

Don’t forget that the Perseid Meteor Shower is this week!

In Orbit

Two cosmonauts on the ISS will go for a spacewalk Monday morning (August 10). You can watch live on NASA TV.

NASA has named the astronauts that will make up Expeditions 51 and 52 in 2017.

Check out this view of the moon passing in front of the Earth from the DISCOVR satellite.

As usual, lots of great tweets from the crew on the ISS this week, including stunning shots of Super Typhoon Soudelor.

Around the Solar System

Check out this animation of our current map of the asteroid Ceres, from NASA’s Dawn spacecraft.

Comet 67P, Where ESA’s Rosetta probe is in orbit, will reach perihelion this week. ESA is hosting a Google Hangout on August 13th.

Comet orbit diagram from ESA

The number of potential landing sites for NASA’s “Mars 2020″ rover has been reduced to 8 candidates.

Meanwhile, Curiosity just celebrated its third anniversary on Mars.

Weekly Links

Down to Earth

Astronauts Stephen Frick and Michael Foreman announced their retirement from NASA this week. If you are interested, NASA maintains an updated list of active astronauts here, which can be easily copied into a spreadsheet. With the addition of the class of 2013 as active astronauts, the number is currently at 46 after recent retirements. Interestingly, the oldest class still represented is the class of 1996, of which Scott Kelly (currently in space) and Peggy Whitson and Jeff Williams (upcoming ISS commanders), are all members.

The National Transportation Safety Board (NTSB) released their findings regarding the accident last fall that destroyed the Virgin Galactic SpaceShipTwo spacecraft and one of its pilots. Their findings are summarized nicely at Parabolic Arc or you can read the longer executive summary of the report. In short, it was indeed the “early unlocking” of the spaceplanes “feather system” that doomed the craft. the NTSB’s analysis found that the risk of human error was not properly taken into account during development.

Rumors out of Russia is that a new “Manned Spaceflight Center”, analogous to NASA’s Johnson Space Center, is in the planning stages, and would be headed by former cosmonaut Sergei Krikalev.

In Orbit

Last weekend, on Saturday, July 25th, ISS flight controllers had to command a debris avoidance maneuver to dodge orbital debris that was headed to the ISS.

Check out this absolutely awesome virtual ISS tour published by ESA and narrated by Samantha Cristoforetti. Some people are calling it “Google Street View on ISS” but it’s really just an old school click-through VR tour. It’s very well done!

ESA is exposing the bacteria found in kombucha to space on the ISS to see how it fares in the harsh environment.

Another cool experiment I learned about while at an ISS payloads meeting in Huntsville, Alabama last week is a small genetic sequencer called minION, which will launch next year.

Peggy Whitson, who will command ISS Expedition 51 in 2017, has joined Twitter!

Speaking of Twitter, here are some good posts from the three tweeters in space right now:

Around the Solar System

The Cassini spacecraft has discovered strange red stripes or streaks on the surface of Saturn’s moon, Tethys. Check it out.

The Curiosity rover is busy investigating some interesting new rocks it has found on the slopes of Mount Sharp on Mars.

Out There

A combination of observations from the HARPS-North ground telescope and NASA’s Spitzer Space Telescope have confirmed the existence of a rocky exoplanet just about 21 light-years away.

While studying another star that is about 20 light-years away, NASA astronomers from JPL have discovered aurora in the atmosphere of a brown dwarf star.

Weekly Links

Down To Earth

Last Monday, SpaceX announced preliminary findings related to the loss of a Falcon 9 rocket and its Dragon cargo mission last month. Here’s the companies official statement on their investigation so far. They have found that a structural support (or “strut”) holding up a pressurant tank in the second stage failed. Elon Musk hopes a delay of only a few months to their manifest.

Tony Antonelli, who piloted two space shuttle missions, has retired from the astronaut office.

The Smithsonian Institution has started a new Kickstarter campaign called “Reboot the Suit” to raise money to restore Neil Armstrong’s moonsuit. The restoration is planned to be completed in time for a new exhibit for the 50th anniversary of Apollo 11 in 2019. I pledged!

In Orbit

Three launches from the Earth’s three spacefaring nation’s this past week: first, a Russian Soyuz rocket launched from Kazakhstan on July 22nd, followed a few hours later by a successful docking to ISS. The crew is now back up to full strength of 6, with the addition of Oleg Kononenko, Kimiya Yui, and Kjell Lindgren. Lindgren and Yui are on Twitter, so you should follow my “people in space” Twitter list.

Second, a Delta IV rocket launched from Florida on July 23rd. The mission delivered a new military communications satellite to orbit.

China also had a successful orbital launch last week. A Long March 3B delivered two navigation satellites to orbit on July 25th.

Around the Solar System

New pictures from the New Horizons’ Pluto flyby! Check out the new views of small moons Nix and Hydra.

Also, check out this view of the dark side of Pluto, with the sun lighting up its thin nitrogen atmosphere!

via Universe Today

Not to mention they discovered nitrogen glaciers!

via Universe Today

Closer to home, at Ceres, the Dawn spacecraft has discovered evidence of a “haze” in Occator crater. This is the large crater with several “bright spots” in its center.

JAXA is accepting applications to choose a name for asteroid 1999 JU3 which will be visited by their Hayabusa-2 spacecraft.

Out There

NASA announced the discovery of Kepler-452b, a small planet around a Sun-like star about 1,400 light years distant. This is the most similar planet in size and circumstance to Earth that we have yet found, but it still has 1.6 times Earth’s diameter (mass, and thus surface gravity, unknown). However, the fact that it is so small and in the habitable zone, makes it an awesome discovery.

Weekly Links

Obviously the big news this week was that New Horizons had its encounter with Pluto this past week. My space news feed was almost entirely Pluto news starting on July 12th, two days before the encounter. Rather than provide you a dozen links, some of which might be out of date, I would just suggest going over to The Planetary Society blog for up to date coverage of the latest pictures coming in from the outer solar system. Ok, on with some non-Pluto news…

Down to Earth

This week marks the 40th anniversary of the Apollo-Soyuz Test Project, the first joint manned spaceflight between the US and Russia (the USSR at the time). The mission is today remembered as an early precursor to the partnership that led to the ISS. NASA TV did a nice piece marking the anniversary, with interviews with the two commanders: Leonov and Stafford. Check it out! (jump to 9:27 for some prophetic words from President Gerald Ford about the future of cooperation in space)

In Orbit

There was a bit of excitement up on the ISS this week. Early on Thursday morning, Houston time, flight controllers in charge of monitoring the trajectory of the ISS were notified of a debris threat without enough notice to coordinate a debris avoidance maneuver rocket firing. Thus, the crew of Expedition 44 had to execute what is called a “shelter in place”. Essentially, they hunker down in their return capsule until the all clear call. No actual debris strike was noted at the “time of closest approach”.

In less scary ISS news, several sets of cubesats were launched from one of the ISS robotic arms. The spring-loaded launcher was built by the company Nanoracks and the cubesats came from various sources, including one test flight for the asteroid mining company Planetary Resources.

Nanoracks recently announced they will also work with Blue Origin to help them fly suborbital research, building on their experience on the ISS.

The next crewed launch to the ISS from Baikonaur will be on Wednesday, July 22nd. You can see NASA TV’s launch and docking coverage schedule here.

There were two successful orbital launches in the last week, both on Wednesday, the 15th: an Atlas V rocket launched a GPS satellite from Florida and an Ariane 5 rocket launched two satellites (one communication and one earth-observing) from Korou.

Around the Solar System

Of course, I can’t resist discussing Pluto at least a little bit… On Tuesday, July 18th, the NASA New Horizons probe made its closest approach to Pluto and survived, phoning home later that evening. The entire dataset from the flyby will take months to downlink back to mission control over the Deep Space Network, but the initial photographs of both Pluto and its largest moon Charon are enough to surprise and excite scientists with some odd unexpected features on both bodies. Some are calling this a “last first look” now that all the large bodies of the solar system have been photographed up close by spacecraft.

Weekly Links

Down To Earth

Claudia Alexander, a successful planetary scientist who has been a project manager for NASA, died Saturday, July 11th.

William Borucki, Principal Investigator of the Kepler Space Telescope, has retired from NASA after over 50 years with the agency.

A few announcements out of NASA’s astronaut office this week: Chris Cassidy is the new chief of the astronaut office, replacing Bob Behnken, who will be busy training as one of the four astronauts chosen for the first commercial crew flights in 2017. The other three are Sunita Williams, Eric Boe, and Doug Hurley. Also, the class of 2013 has officially graduated from ASCANs (astronaut candidates) to astronauts, after finishing what is basically their “basic training”.

Nicole Stott, who recently retired from the astronaut office, is taking up space-themed art as her new mission. Very cool!

In Orbit

Follow-up to the launch news from last week: the Progress resupply vehicle launched on July 3rd made it to ISS on the 5th, keeping the supply chains flowing. The next ISS cargo mission is a Japanese HTV flight in August.

Also in rocket news, there was one orbital launch last week from India, carrying several commercial and technology demonstration satellites. Upcoming launches include an Ariane 5 launch from Kourou and an Atlas V launch from Florida, both on the 15th (I use this Wiki page to track launch schedules).

You’ve got to love a good ISS transit photo. Here’s one of the station passing in front of the moon.

Around the Solar System

It’s time! New Horizons will fly past Pluto on Tuesday! Here is a summary of NASA TV’s coverage of the flyby. The probe gave us a scare last weekend when it went into safe mode briefly, but it is back up and running now and sending home new pictures every day.

One of the latest looks at Pluto

The Dawn spacecraft, in orbit around dwarf planet Ceres, also went into safe mode recently, but was also recovered. Dawn was planning to spiral down to a lower mapping orbit but the issue has delayed that next step in the flight plan.

Mission controllers for the Curiosity rover are dealing with some troubles of their own on Mars. The rovers wheels are continuing to show signs of worsening wheel damage. However, the JPL guys know what they are doing, and they don’t seem too worried yet. Here are some good details from

Lean on me

Last Thursday night, I stayed up late like many space fans to watch a “routine” Russian Progress cargo launch to the ISS. This was the 60th flight of a Progress to ISS, clearly a very reliable way to get cargo up there, given that only two previous missions had failed in their objective. But, one of those failures came only about 9 weeks prior, and just 6 days prior a SpaceX Falcon 9 rocket also failed to reach orbit. So despite the apparently reliability of both the Progress vehicle and the Soyuz rocket family, the spaceflight world was on “pins and needles” as Eric Berger of the Houston Chronicle put it.

There seemed to be a theme in the general mood last Thursday about being glad that Russia was able to have a successful launch, but regret that Russia is the country that had to save the day.

This mood is not surprising. Since the last Space Shuttle mission 4 years ago, America’s astronauts have only flown to space on Russian Soyuz capsules. And of course, there are political reasons – unrelated to spaceflight and ISS – that makes people wary to have close ties with the Russian government right now. The loss of two American unmanned flights to ISS in the last year highlights what is an apparently lopsidedness between NASA and Roscosmos when it comes to flying to space.

This whole situation causes the patriot to come out in a lot of people, which is also understandable. Americans have grown accustomed over the last 50 years to NASA being top dog in space. We want our astronauts launching from Florida, not Asia (much harder road trip) and we don’t want our tax dollars going to Russia either. This all makes sense, and I agree. We should all be excited for American space companies being successful, and the commercial crew flights from Boeing and SpaceX can’t come soon enough. Nevertheless, the narrative that somehow Russia has the upper hand is misplaced and frankly doesn’t make sense to me.

This is the narrative that has been a great political point in Washington ever since the end of the Shuttle program but has been used even more over the last year. The phrases people use are that we are “hitching rides” with the Russians or that we are “dependent on” the Russians. Some people are implying that this means the Russians have some sort of power over us. That they are somehow in control of the ISS program politically, and could use it as a bargaining chip if they wanted. In fact, last year Russian Deputy Prime Minister seemed to think that as well when he said that the US should “use a trampoline” to get to space and I even saw a blog article titled “No, Russia did not just kick the US out of the Space Station.”

What I would like to propose is an alternate perspective based up on a more nuanced consideration of what goes on in a partnership. Perhaps the politicians, including Rogozin, do not understand the nuances of what each member country really contributes to the ISS. Yes, right now we are “dependent” upon the Russians Soyuz launch vehicle to get to the ISS. But there is more to operating a giant space station than just getting up there.

Consider my wife (no seriously, stay with me here). Two weeks ago she fractured her right leg playing soccer and has been in a cast. She hasn’t been able to drive, so has been “dependent” on me to get around. I am her only way to work (kind of like the Russian Soyuz is the astronaut’s only way to work). Does this mean I have some kind of power over my wife? Yes, temporarily, but it wouldn’t make sense to exploit that power for a few reasons. The obvious one being that she is my wife and I’m not a jerk, but for the purposes of my analogy, let’s consider the others: while she is dependent on me for transportation and some chores around the house, I am dependent on her for companionship, love, conversation, and wardrobe ideas, not to mention she helps us pay the bills with her equally cool job at NASA! Like any balanced partnership, there is much more going on than just who can drive the car to work. And of course, the cast will come off in about another week and my period of apparent power will be over. What would it gain for our marriage in the longterm for me to somehow use the fact that I have to drive her around to get something I want?

The more I think about it, the more I think this is exactly like the relationship of NASA and Roscosmos in the ISS program right now. Whether you agree or disagree with the decision to retire the Space Shuttle in 2011, it happened and cannot be undone, leaving us in a period of a few years during which astronauts will not be launching from American soil. But we are not in this space business alone anymore. The open-mindedness of the politicians and NASA management who went ahead with the ISS program over 20 years ago has put us in the unique situation of being able to keep our astronauts flying during our period of weakness, if you want to call it that.

But we are not weak. We invented the modern concept of Mission Control and continue to operate the ISS – and the odd Orion flight – from the Johnson Space Center, day in and day out. America has fully seven manned spacecraft* of some type or another in development right now. We operate the critical US Orbital Segment of the ISS without which the ISS could not function. Anyone who thinks it would be a technically simple thing to do for the Russians to “kick us out” and keep the ISS functioning without us (even if such a political move was likely, which I doubt) either doesn’t understand the International Space Station, or is oversimplifying the situation in favor of their politics.

Russia provides critical access to the ISS right now via the Soyuz spacecraft, as well as propulsive support and propellant resupply with the Progress spacecraft. However, just as critical, the USOS provides non-propulsive attitude control with the CMGs, so that the propellant doesn’t get used up so fast that it would be impossible to resupply in time. Also, over half an acre of solar panels on the US segment are needed to power those CMGs – not to mention we ship some of those kilowatts to the Russian Segment, since it has grown too big for its own solar panels over the years.

I could go on. Much of the redundancy of the ISS is built specifically around the concept that the backup system is on the other segment. Sometimes the cosmonauts are even assigned to sleeping quarters in Node 2, on the USOS. The ISS was designed as a partnership from the beginning and our joint interest in continuing our own individual legacies in spaceflight, which has now become a joint legacy, would prevent pretty much anything short of a complete diplomatic breakdown from causing either party to pull out of the program, because it would likely mean doom for the station itself.

So, before you go off on a rant about how its too bad that America is “dependent” on the Russians to get to space, think about whether we should be grateful we are willing to work together despite geopolitical tensions. Perhaps we should be grateful that twice in our time of need, after the loss of an Orbital rocket last year and a SpaceX rocket last month, they quickly launched a Progress resupply vehicle to restock the International Space Station. Perhaps we should be grateful that instead of our astronaut corps being grounded, like it was for 6 years between Apollo-Soyuz and STS-1, that our astronauts continue to fly in space and that our teams on the ground continue to hone their skills as we wait for the big adventures to come with Orion and beyond.

I don’t think we should let the politics and the nationalism overshadow what is really going on here. The International Space Station is just that, international. So to get bent out of shape over sharing rides is kind of counter to the whole point of the thing. Our access to space, to the ISS, is assured specifically because of the redundancy of the partnerships we have built. We have supply lines from America, Russia, and Japan on 4 different rockets. Very soon, our crew access will be from both America and Russia via 3 different rockets. It will be very hard to stop humanity’s access to space at that point. And who knows where we will go from there, together?

Thank you Russia, for letting us lean on you for a little while, as we journey onward.

*Orion, Dragon V2, CST-100, Dreamchaser, SpaceShipTwo, Lynx, New Shepard

Weekly Links

Down to Earth

Unfortunately, putting Sally Ride in the US Capitol Statuary Hall is on hold. The issue is that Father Junipero Serra’s statue would be removed and he is expected to be canonized soon. The bill was on the docket in the California state legislature (I linked to the original proposal back in April).

Johann-Dietrich Woerner, as of July 1, is the new the ESA Director General. Previously, he was the head of the German space agency.

My favorite news of the week, other than all the goings-on with the ISS below, is that Houston’s Ellington field has been granted a Launch Site License by the FAA. This means it could be a “spaceport” in the future. It would be pretty cool to see takeoffs and landings of space vehicles from just down the road here!

In Orbit

As of June 29th, Gennady Padalka, current commander of Expedition 44 onboard ISS, became the most-flown astronaut or cosmonaut. The previous record of 803 cumulative days in space, held by Sergei Krikalev ,was broken by Padalka on Tuesday. He will get to almost 900 days before he comes home in September. Krikalev’s flew in space six times, while this is Padalka’s fifth.

Of course, the biggest news of the week was the loss of SpaceX’s Falcon 9 rocket on June 28th. The rocket was launched to send another Dragon capsule to the ISS for their 7th resupply flight (8th if you count the demo mission). The rocket came apart just a couple of minutes into the flight. Here’s the video:

SpaceX will of course have to do an investigation of the failure, and possibly make some design changes, before their next flight. Some important but not critical ISS cargo was lost on the mission, like a new docking adapter and spacesuit parts. There’s a good cargo list on Wikipedia, or check out this post from Parabolic Arc.

Fortunately, given that the ISS has many partners, including four redundant rockets used for resupply, the loss of one SpaceX mission hopefully won’t pose a longterm problem for the program. Just last night, Russia launched a Progress resupply spacecraft, which will dock to ISS tomorrow. The Progress brings all kinds of cargo, including propellant, food, water, and other supplies.

It is interesting to look at some numbers with SpaceX. The launch failure was their first with the Falcon 9 rocket, which had previously had 18 successful flights. Also, before the failure, they had launched five Falcon 9 flights successfully in 2015. Their previous record flight rate was 6 flights in 2014. They could still fly more this year depending on how the failure investigation goes. Parabolic Arc has a nice breakdown of what their upcoming manifest looked like before the failure.

As usual, ISS commander Scott Kelly posted some great photos of Earth from space over the last week:

Around the Solar System

Update from comet 67PP/Churyumov-Gerasimenko: mission controllers are still trying to establish consistent contact with the Philae lander. Meanwhile, the Rosetta orbiter is doing awesome science, like discovering lots of surface ice and sinkholes (I think I’d rather call them “air pockets”).

Check out the obvious red color (probably caused by hydrocarbons, not rust) in recent images of Pluto from New Horizons. Only 2 weeks until rendezvous, and NASA has given the all-clear for the close encounter on the current orbit. No new hazards (moons or rings) have been spotted in Pluto orbit.

Weekly Links

Down to Earth

The next SpaceX resupply flight to ISS will now be on June 28.

NASA’s “Europa Clipper” mission, which will explore the icy moon of Jupiter, has moved on to development phase.

US Senator from Texas John Cornyn visited mission control last week.

In Orbit

For the rocket junkies, the first launch since June 5th occurred today. The ESA Earth-observing satellite Sentinel-2 launched from French Guiana just a little while ago as I write this. There are no press releases up about the successful launch yet, so here is the Wikipedia page about the mission. Russia is launching a reconnaissance mission on a Soyuz rocket tomorrow, and then there is the SpaceX launch next Monday (see Wikipedia page 2015 in spaceflight for launch schedule).

On Thursday, ISS flight control teams commanded a reboost burn in order to slightly changing the station’s orbit. This is done to make sure that upcoming rendezvous events, like the next Soyuz launch and docking in July, happen when and where they are planned.

Robonaut 2, which lives aboard the ISS, was named the 2014 Government Invention of the Year (US).

New high definition videos of cities, filmed from the ISS, were released by UrtheCast. From 200+ miles up, you can see cars moving on streets and boats on rivers. More than that though, I think I like watching the buildings “move” as the perspective shifts at 17,500 mph.

The Planetary Society’s LightSail solar sailing test re-entered Earth’s atmosphere last Sunday, June 13th. Their next test launch will be late in 2016.

Roscosmos has announced that Sarah Brightman’s empty seat on Soyuz TMA-18M later this year will be filled by a cosmonaut from Kazakhstan.

Scott Kelly is doing a great job still posting a great variety of beautiful images from ISS on Twitter all by himself. Here is a sampling:

Around the Solar System

ESA’s Philae lander, which has been hibernating on comet 67P since November, has woken up! Data was received by the Rosetta orbiter on June 13 and 14, prompting the mission team to start making plans for when they gain a more solid link with the probe.

Scientists have discovered methane in Martian meteorites (pieces of Mars that came to Earth as a meteorite), thus confirming and deepening the mystery around the methane that has been detected at Mars by various spacecraft.

Check out this epic trailer for the upcoming rendezvous of the New Horizons spacecraft at Pluto:

Weekly Links

Down to Earth

Jack King, who provided launch commentary for NASA missions in the 1960s and 1970s, has died at 84.

The United States Senate is busy working on a markup of a budget in the Commerce-Justice-Science (CJS) subcommittee, which includes money for NASA. The current budget, if passed, would include about $18.5 billion for NASA. However, there is some debate about how that money is being spent, including whether enough money is being allocated to the “commercial crew” program for launching astronauts to ISS on spacecraft built by SpaceX and Boeing.

NASA has awarded $30 million to SpaceX for their launch abort test milestone last month.

NASA’s Low Density Supersonic Decelerator (LDSD) had a second drop test over Hawaii this week. The technology will help with Martian EDL for large mass spacecraft. Unfortunately, the parachute failed at high altitudes. More test flights are planned.

In Orbit

It was a very busy week up on the ISS. The most important update is that Expedition 43 ended on Wednesday when Terry Virts handed over command to Gennady Padalka for Expedition 44. Then on Thursday morning the crew of TMA-15M (consisting of Terry Virts, Samantha Cristoforetti, and Anton Shkaplerov) undocked from the ISS and landed safely in Kazakhstan a few hours later.

Earlier in the week, there was some unrelated excitement: first, on Monday, June 8th, the mission control teams in Moscow and Houston had to work together to execute a Pre-determined Debris Avoidance Maneuver (PDAM) to change the ISS orbit to dodge some space junk.

Then, on Tuesday, an unexpected thruster firing from a docked Soyuz vehicle caused ISS to take contingency actions. The Soyuz thruster firing overwhelmed the NASA-owned Control Moment Gyroscopes (CMGs), requiring use of Russian Segment attitude control thrusters to “right the ship” so to speak. Long story short, this is exactly the kind of contingency we plan for and practice hundreds of times in the ADCO group. From what I have heard, the situation was handled very well!

With Expedition 44 underway, there are only 3 astronauts aboard ISS. According to official launch dates from Roscosmos, we won’t see 6 people aboard again until TMA-17M launches in late July.

The LightSail mission has been declared a success, now that there are images of the mylar solar sails deployed! Can’t wait for the next test flight next year.

Around the Solar System

NASA’s Mars Reconnaissance Orbiter has found evidence of impact glass, which may preserve evidence of past life.

Here is some new imagery of Ceres from the Dawn spacecraft, featuring a new high resolution look at the “bright spots”. Ceres is slowly moving to lower and lower mapping orbits.

There is also new imagery of Pluto from New Horizons:

Because its Cool

Check out the first official trailer for the highly anticipated (at least by geeks) movie, The Martian: