Archive for the ‘SLS’ Category

Weekly Links

Before I get into my recap of what has happened over the past week and a half, I want to make sure to note that tomorrow, Wednesday, March 11, there will be two big events covered on NASA TV. First, Orbital ATK will conduct a test firing of a solid rocket motor in support of SLS development. The coverage will start at 11 AM Eastern with the test firing at 11:30 AM. Secondly, Soyuz TMA-14M will undock from the ISS at 6:44 PM Eastern and land at around 10:07 PM in Kazakhstan. There is NASA TV coverage throughout the day, including at 3 PM for hatch closing. Here is the change of command ceremony from earlier today:

Down to Earth

Sci-fi icon Leonard Nimoy (Mr. Spock on Star Trek) died on February 27th.

Cast of Star Trek with NASA’s Space Shuttle Enterprise

One of Chris Hadfield’s old flight suits (not worn in space) was bought at a random Toronto thrift store. Seriously.

Although SpaceX’s lawsuit against the USAF seems to have been resolved, there has been another interesting piece of space legal work going on. SpaceX is suing over Blue Origin’s patent on landing a rocket stage on a platform at sea.

United Launch Alliance plans to retire the Delta IV launch vehicle (but not the Heavy variant).

China has made some of their future manned spaceflight plans public, including the launch of a new larger space station next year.

I don’t know what to call this other than a “trailer”. Check out this video about the LHC starting up again this year:

In Orbit

A USAF weather satellite known as DMSP-13 broke apart at a 500 mile altitude in early February.

On March 1st, SpaceX launched its third Falcon 9 launch of the year. Quite a good pace so far in 2015…

Also on March 1st, astronauts Terry Virts and Butch Wilmore completed the third of their trilogy of spacewalks outside the ISS to “wire up” the US segment for the new docking ports to be delivered starting later this year.

ISS Commander Butch has been posting some excellent Vine’s in his last few weeks aboard. Here is a sample (follow @space_station on Twitter or Vine):

Of course, Samantha Cristoforetti has been just as busy on social media. Here is a shot she got of some cubesats recently launched from the Japanese robotic arm on the ISS.

Around the Solar System

The Dawn spacecraft has reached Ceres! However, as you can see in the animation below, the spacecraft is in a bit of an odd “orbit” above the dark side of the asteroid until early April. That is why we won’t get better sunlit images of the asteroid for several weeks.

Check out this awesome shot of Mars’ moon Phobos in silhoutte, by India’s MOM.

via The Meridiana Journal. Photo Credit: Indian Space Research Organization (ISRO)

Check out this picture that the Rosetta spacecraft took of its own shadow.

Some scary news from Mars at the end of last month – a short circuit in the instruments at the end of Curiosity’s robotic arm caused the missions’s flight control team to halt operations for troubleshooting. It sounds like as of this week, they have determined it is safe to continue operations. Excellent!

Weekly Links

Down to Earth

Elon Musk released photos on his Twitter feed of the moment that the SpaceX Falcon 9 rocket first stage hit their “autonomous spaceport drone ship” (see, barge) and blew up. This occurred a few minutes after the launch of the latest Dragon resupply craft last Saturday. It seems like they hit their target but came in too hard. Maybe better luck on their next flight in a couple of weeks.

Update: Just a little while after I wrote this post, the SpaceX twitter account posted this amazing Vine video.

NASA completed a “hot fire” test of the new RS-25 liquid fueled engine at Stennis Space Center in Mississippi. The RS-25 is a modified Space Shuttle main engine which will power the SLS.

Much noise has been made about Ted Cruz (R-TX) being assigned to a US Senate subcommittee that oversees the budget of NASA. The main concern is that Cruz is considered anti-science. At the very least, he is anti-science when it comes to climate research, which NASA supports with a fleet of Earth-observering satellites. Houston Chronicle has the best analysis I have seen of what impact Cruz may actually have on the NASA budget. If you are concerned about this topic, you should read Eric Berger’s post. Here’s a longer more technical analysis at Space Policy Online.

Virgin Galactic is teaming up with a small satellite company known as OneWeb to launch a large constellation of satellites to bring broadband internet to the entire world. Replacement satellites will be launched by the LauncherOne rocket dropped from Virgin’s WhiteKnightTwo carrier aircraft.

There is an idea floating of a new reality show which would be a competition between inventors and scientists to get their research flown to ISS. Sounds cool!

In Orbit

Two big things happened on the ISS this week. on Monday, the latest SpaceX Dragon resupply craft arrived. This was the first cargo delivery to ISS from the US since the loss of an Orbital Sciences Antares rocket in October. There was one Russian Progress resupply flight back in November.

The SpaceX flight was quickly overshadowed by an emergency alarm onboard the ISS on Wednesday morning. The alarm was for a toxic leak of ammonia, which cools the space station avionics hardware in fluid loops on the outside of ISS. In certain failure cases (for which there is multiple layers of redundancy to prevent) the ammonia can break into the internal fluid lines (which carry water) and endanger the astronauts.

Ground teams and the astronauts took immediate safety actions, as we train for hours and hours for, and evacuated to the Russian side of the space station, which does not have ammonia coolant lines. The emergency alarm was eventually determined to be false, caused by a computer glitch, and the astronauts were allowed to open the hatch to the rest of the station late in the day on Wednesday.

While the astronauts are safe, cleanup from such a major (potential) failure takes some time because of all of the automatic safing software that shut down ISS systems on Wednesday. The Flight Control Team will still be diligently working towards bringing the ISS back to “nominal” during my evening shifts this weekend.

Around the Solar System

NASA’s New Horizons probe has technically begun science operations for its Pluto encounter, although it is still more than 100 million miles from Pluto.

The long-lost Beagle 2 lander has been found on Mars by NASA’s Mars Reconnaissance Orbiter (MRO). The lander was lost during EDL phase (Entry, Descent, and Landing) back in 2003, which was a huge disappointment to the United Kingdom’s space agency. Incredibly, although the world had assumed that Beagle 2 crashed into the surface – hence the loss of communication – the MRO images show the lander safely on the surface, partially deployed. In honor of deceased mission designer John Pillinger, I think this image deserves an update to show that Beagle 2 made it to the surface.

Check out this colorized view from Opportunity on the summit of Cape Tribulation. Image processing done by @mars_stu at his blog The Road to Endeavour (click to embiggen, of course).

Opportunity at Cape Tribulation (credit: NASA/JPL processed by Stuart Atkinson)