NASA planning emergency spacewalk to fix ISS ammonia leak

After an ammonia leak was discovered on the International Space Station last night, NASA and the ISS crew are working together to come up with a fix. It’s been decided that an emergency spacewalk will be conducted to inspect the leak and attempt to fix it before matters get worse. The leak is on the outside, so it isn’t immediately life-threatening, but the supply will run out if the leak continues.

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The ISS’s power relies on ammonia coolant, so if that supply runs out, the space station would go dark and all the vital equipment needed for survival would stop working, which at that point the crew would be in grave danger. According to ISS Commander Chris Hadfield, the leak appears to have been stabilized, but there still needs to be a solid fix.

In order for the ammonia-based coolant system to operate normally, it needs a certain amount of ammonia in the tanks. However, based on the rate of the leak, the levels in the tanks could drop below that sweet-spot level within 48 hours, at which point the system would be at risk of shutting itself down due to a lack of ammonia. Of course, the station can operate on a broken cooling system, but it would take some clever thinking to prevent ISS components from overheating.

Luckily, the astronauts on board are fairly confident as far as where the leak is coming from, so once they begin their spacewalk, they’ll hopefully be able to go right to the leak and immediately begin repairing it. The spacewalk is being planned as we speak (with a live stream of the whole thing), and astronauts Chris Cassidy and Tom Marshburn are getting their spacesuits prepared for the spacewalk, which will take place at some point tomorrow.

In a similar but unrelated note, the United States Alliance has switched over the ISS’s computer systems from Windows to Linux to make sure that they’re “stable and reliable.” Specifically, the ISS was running Windows XP (not even Windows 7?), and they have now started to switch to Debian 6. For what it’s worth, however, some computers on the ISS have already been running various versions of Linux, including RedHat and Scientific Linux.

SOURCE: Chris Hadfield and ExtremeTech


NASA planning emergency spacewalk to fix ISS ammonia leak is written by Craig Lloyd & originally posted on SlashGear.
© 2005 – 2012, SlashGear. All right reserved.

NASA reports ammonia leak on ISS, says inhabitants ‘in no danger’

NASA reports ammonia leak on ISS, says inhabitants 'in no danger'

The International Space Station has been a font of good news and scientific progress since it received its first human residents at the start of the millennium, but now it may be starting to show its age. The current crew reported seeing damage to the vessel’s truss structure yesterday and NASA has since confirmed there’s been a leak of ammonia from the station’s cooling system. The Agency says the problem isn’t dangerous and that regular ISS-style activities are continuing as normal while earth-bound helpers figure out a way of re-routing power channels before part of the cooling system shuts down. If you want to hear what unflustered voices sound like at an altitude of over 200 miles, check out the audio of Commander Hadfield’s initial report of the leak at the source link below.

Update: Commander Hadfield has also confirmed on Twitter that there’s been a “big change in plans,” and that astronauts Chris Cassidy and Tom Marshburn will perform a spacewalk today to fix the leak.

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Via: SlashGear, Spaceflight Now, CBC News

Source: NASA

NASA says ISS has an ammonia coolant leak

NASA has confirmed that the international space station is currently in need of maintenance on the cooling system used on one the solar power generating arrays. At about 10:30 AM yesterday, members of ISS Expedition 35 crew reported to NASA that small white flakes were floating away from an area of the ISS’ P6 truss structure.

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To gather additional information for crew members on the station and NASA controllers on the ground, ISS crewmembers used hand-held cameras while Mission Control used external television cameras to record images to gather additional data. Those images were used to narrow down the location of the leak.

Information from crewmembers aboard the space station and the photographs taken indicate that the ammonia leak in the section of the cooling system is increasing in capacity. The ISS uses ammonia to cool the power channels that provide electricity to systems aboard the space station. NASA says that the ISS crewmembers are in no danger at this time.

SpaceFlight Now reports that this coolant system requires at least 40 pounds of ammonia for normal operation. NASA believes that at the current leak rate, the coolant loop in question would drop below that level and shut down within 48 hours if a repair isn’t made. If that coolant loop shuts down, crewmembers would have to reconfigure the coolant loops to use a different loop to cool some of the computer systems the leaking 2B loop currently cools.

[via NASA and SpaceFlightNow]


NASA says ISS has an ammonia coolant leak is written by Shane McGlaun & originally posted on SlashGear.
© 2005 – 2012, SlashGear. All right reserved.

New photo from ISS shows moon rising over a darkened Earth

International Space Station Commander Chris Hadfield has been busy taking photos of the Earth from the ISS for a few months now, mostly showing us what cities look like from 250 miles up, but a particular photo that he posted just recently is a bit different, and it shows a beautiful horizon with the moon rising over a darkened Earth.

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We’re not exactly sure what cities we’re looking at in the photo, but Hadfield points out that its the southeastern United States, with the bigger city toward the right side being Atlanta or Charlotte possibly. In any case, the horizon looks absolutely amazing, and the moon creeping in makes the photo that much more spectacular.

Hadfield not only takes a ton of photos of Earth from the ISS (which you can browse through all of them with this neat interactive map), but he also provides short videos on what it’s like to live on the ISS, and in one of his latest videos, he describes how he takes photos of Earth from the ISS. The secret? A huge lens.

Hadfield primarily uses a Nikon DSLR with a 400mm lens. This is one heavy setup, but thanks to the lack of gravity in space, Hadfield doesn’t need to strain his shoulders or arms lifting and holding the camera. Instead, the camera merely just floats in front of him. Hadfield even says that they take the cameras out on spacewalks into the cold vacuum of space. We’ll be keeping up with Hadfield and the ISS over the next months for any more photos that he posts in the future. Stay tuned!


New photo from ISS shows moon rising over a darkened Earth is written by Craig Lloyd & originally posted on SlashGear.
© 2005 – 2012, SlashGear. All right reserved.

2014 Olympic torch to be carried in space

The Winter Olympics are set to begin in 2014, which means the Olympic torch will once again be carried around the world before it finally lands in the Olympic Stadium in Russia to mark the beginning of the sporting event. However, the torch will take a trip to space where it will be taken on a spacewalk for the first time ever.

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Two cosmonauts will be making the spacewalk along with the Olympic torch in order to celebrate the games that will be taking place in Russia. The torch walk is scheduled to begin on October 7 this year, and it will span 123 days and travel more than 34,000 miles. The torch will also be carried by 14,000 different people, which would be a record for Olympic torch walks.

The deputy head of Russia’s space agency Roscosmos, Vitaly Davydov, said that the torch that will be carried to space will be “the same as the torch at the Olympics,” although the torch will not be lit on its way to space, since open flames are prohibited from being carried inside a spaceship while traveling to the ISS.

The spacewalk with the torch is set to take place in November, and it’s expected to return back to Earth on November 12. Russian cosmonauts Oleg Kotov and Sergey Ryazansky are expected to perform the space walk with the torch. Other places that the torch is scheduled to go to is Mount Elbrus (the highest peak of Europe), the bottom of Lake Baikal, and the North Pole.

[via Russian Times]


2014 Olympic torch to be carried in space is written by Craig Lloyd & originally posted on SlashGear.
© 2005 – 2012, SlashGear. All right reserved.

Space rock rips through ISS solar panel, gives hull a miss

Space is a dangerous world. Debris is flying around everywhere, including small space rocks (read: bits of asteroid or meteoroid), which means that the International Space Station is constantly prone to getting hit by these small objects, and when you’re traveling at 4.8 miles per second, even small objects can have a big impact. ISS Commander Chris Hadfield tweeted a photo of a hole in the one of the solar panels where a space rock ripped through.

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Few details are known at this point, but Hadfield referred to the damage on the solar panel as a “bullet hole,” and said that he was “glad it missed the hull.” We’re not sure exactly what would happen if a small rock like that collided with the ISS hull, but judging from Hadfield’s sigh of relief, nothing good would come out of it.

We’re guessing that the hole didn’t cause too much severe damage to the solar panel, or else the ISS would be in deep trouble. We’re not sure how large the small hole is, but it doesn’t look big at all — merely a small speck compared to the sheer size of the solar panels on the station.

Of course, this isn’t the first time that Hadfield has talked about small meteoroids hitting the ISS. He hosted a Reddit AmA back in February where he discussed “micro-meteorites would sometimes hit the hull and make a loud “ping” noise, which leaves dents on the outside of the station. However, Hadfield notes that a larger piece of rock could come along and cause greater damage.


Space rock rips through ISS solar panel, gives hull a miss is written by Craig Lloyd & originally posted on SlashGear.
© 2005 – 2012, SlashGear. All right reserved.

How Astronauts Turn Pee into Drinking Water

Sure, there’s no air in space. But once you’ve overcome that rather urgent deficiency, you’ve got to deal with another one: no water. Thanks to science, astronauts can solve that problem by just drinking pee. Zero-G YouTuber and ISS astrodinaire Chris Hadfield explains. More »

Russian cargo fail no block to today’s ISS dock

Today the unpiloted Russian cargo ship known as Progress 51 has reached the International Space Station and docked successfully. This news is extra positive due to the failure of the craft’s antenna after initial launch, both Russian mission control and NASA confirming earlier this week. The craft has now docked – at 1225 GMT to be precice – after extra care was given to the landing due to the unopened antenna.

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This situation allows Russian cosmonauts Roman Romanenko and Pavel Vinogradov to access three full tons of food, fuel, supplies, and a set of experiment hardware along with the rest of the crew of six aboard the ISS. Though the Kurs antenna remained undeployed, it would appear that the mission has been a full success. The final hard mate occurred at 8:34 a.m. EDT according to NASA.

This docking happened between the Progress 51 Russian cargo ship and the rear port of the Zvezda service module of the International Space Station. What you’re seeing above is a video presented by Russian mission control of the Russian Federal Space Agency at the Baikonur Cosmodrome in Kazakhstan. This launch made way at 6:12 a.m. EDT just two days ago en route to the ISS.

With the supplies brought in this week, the ISS will be stocked with an additional 1,764 pounds of propellant, 57 pounds of air, 926 pounds of water, 48 pounds of oxygen, and 3,483 pounds of spare parts and experiment hardware. For its trip back to our planet, the Progress 51 craft will be filled with trash and station discards. Good luck, team!

And readers, be sure to head to SlashGear’s Science tag portal for more excellent space-bound action!


Russian cargo fail no block to today’s ISS dock is written by Chris Burns & originally posted on SlashGear.
© 2005 – 2012, SlashGear. All right reserved.

How to Take Pictures—From the International Space Station

During his time aboard the International Space Station, astronaut Chris Hadfield has taken and shared some of the most amazing photos of our planet on his Twitter account. And in this video clip, he explains how he snaps those beautiful photos of Earth, and the wonderful camera equipment at his disposal. More »

ISS experiment confirms state of wrung-out wet towel in space

Canadian astronaut Chris Hadfield has this week returned a request from a couple of high school science students to perform a simple experiment aboard the International Space Station: wringing out water from a wet washcloth. It’s shown first that a washcloth on the ISS is stored in a sort of hockey puck form, smashed down to its smallest physical form to avoid taking up any unnecessary space aboard the space station. From there it’s a lengthy task just unfolding the piece of material for basic use.

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The washcloth itself is made wet offscreen as the task appears to spoil the surprise for the viewer. The viewers, mind you, are part of the brand new NFB Space School just revealed this week. This program is housed by the National Film Board in Canada and will continue to make use of the efforts of Chris Hadfield aboard the ISS as well as other Canadians willing to join in on the education.

Once water is released into the station, you’ll see it take on a blob-like form. Once it is (seemingly) inside the cloth, it travels with the cloth. This is similar to what would happen if Hadfield were much closer to the surface of our planet, but were the cloth this wet and he were standing on the Earth’s ground, gravity would have the water dripping down from the cloth.

Because of the surface tension of the materials included here and the extremely low gravity present on the ISS, the water stays together – for the most part – even when the cloth wrings it out. You’ll see the “tube of water” promised to you in the title of this article about 2 minutes in to the demonstration video.

The NFB Space School has been launched today as well – this being an online resource for science enthusiasts and everyday learners online. This program appears at the moment to be prepared for students across the world, provided by Canada’s NFB in support of space exploration and the expansion of scientific knowledge in general. Have a peek at SlashGear’s International Space Station tag portal for more news from our high-flying astronaut friends!

[via NFB Space School]


ISS experiment confirms state of wrung-out wet towel in space is written by Chris Burns & originally posted on SlashGear.
© 2005 – 2012, SlashGear. All right reserved.