Size comparison of a Space Shuttle and a Soyuz capsule.
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Here’s an interesting illustration showing the size comparison of a Space Shuttle to a Soyuz vehicle, shared on Twitter by NASA astronaut Rick Mastracchio (@AstroRM). Amazing to think that three flight-suited astronauts are able to fit inside a Soyuz and have life support for up to a month! (Although I’m sure most hope they won’t have to stay that long.)
Compare the 7-person capacity, 65.8 cubic meter crew cabin of an orbiter to the 3-person, 10 cubic meter space inside a Soyuz and one can imagine how cozy it must get during trips to and from the Station.
Rick is currently in training for a Soyuz flight to the ISS in November of next year as a member of the Expedition 38 crew, at which time he’ll get plenty of first-hand experience with the precise interior measurements of a Soyuz.
Thanks to Rick for sharing this! You can find out more about the Soyuz vehicles here, and check out the full source publication MIR Hardware Heritage (1995) by David S. F. Portree for Johnson Space Center.
The heaviest cargo ship ever has arrived and docked to the International Space Station, laden with 7 tons of supplies for the 6-member ISS crew. The 20-ton European ATV-3 cargo ship, named “Edoardo Amaldi” after the Italian physicist and spaceflight pioneer, made a “smooth and gentle” docking on March 28, 2012, the European Space Agency said. The supplies delivered included food, drinking water, clothing, oxygen, spare parts and fuel.
The ATV launched from Kourou, French Guiana last Friday. It will use its engines to boost the space station during its 5-month stay on orbit. It is scheduled to undock on August 27 and perform an “orbital cremation” of trash from the space station.
“As you can imagine, all works comes to a stop on the Space Station when the toilet breaks,” said astronaut Don Pettit, known as Mr. Fixit among the astronaut corps. In this latest edition of “Inside the International Space Station,” Expedition 30 astronauts Dan Burbank and Don Pettit discuss their glamorous life in space of having to fix the toilet, upgrade their computers, and take out the garbage. This sounds just like living on Earth, but there are a few orbital twists for doing those things in space. And of course Pettit nails it with his vivid descriptions.
Time for your daily dose of awesomeness from the ISS! Here’s a time-lapse video of the Aurora Australis photographed by Expedition 30 crew members on March 4, as the Station passed 240 miles (386 km) over the chilly waves of the southern Indian Ocean. Absolutely gorgeous!
This is incredible — the shimmering green aurora almost reaches up and touches the International Space Station in this latest video released by the NASA Crew Earth Observations website. The sequence of shots to create this video was taken by the crew of Expedition 30 on January 25, 2012 from 09:27:08 to 09:32:16 GMT, on a pass from northwestern Wisconsin to southeastern Quebec, near the Gulf of St. Lawrence.
Below are more views of the aurora as the ISS passes over the Pacific Ocean to the west coast of the US, and then an additional video shows a pass over the US to the Atlantic Ocean.
Expedition 30 astronaut and chemical engineer Don Pettit continues his ongoing “Science off the Sphere” series with this latest installment, in which he demonstrates some of the peculiar behaviors of thin sheets of water in microgravity. Check it out — you might be surprised how water behaves when freed from the bounds of gravity (and put under the command of a cosmic chemist!)
Leave it to Mr. Wizard, a.k.a. astronaut Don Pettit on board the International Space Station, to give a detailed demonstration to explain how physics works in space, including demonstrating trajectories in microgravity by catapulting an Angry Bird through the space station. The video coincides with the release of a new Angry Birds game, “Angry Birds Space,” and the game’s developers have incorporated concepts of human space exploration into the new game to provide a little education along with the latest version of the popular time-waster game, which was produced in cooperation with NASA. From the weightlessness of space to the gravity wells of nearby planets, players can use physics as they explore the various levels of the game set both on planets and in microgravity.
A stunning image taken by Don Pettit on board the International Space Station. Credit: Don Pettit/NASA
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Astronaut Don Pettit posted this beautiful image on his Google+ page showing a view from the space station reminiscent of science-fiction. Of course, that’s the constellation Orion off in the distance, but there’s a bit of a debate going on at Pettit’s post whether the diffusion of light seen emanating from the ISS is just light from inside the space station windows (it appears to be the Cupola) spreading out into total darkness, or if the effect is actually from a reboost of the ISS for a Debris Avoidance Maneuver that was performed around the time this image was taken.
The only clue Pettit provided is the title he gave the image, “Orion in the headlights,” which would point to the effect coming from the light shining from the Cupola windows. But the The DAM took place at 10.12 GMT (5:12 a.m. EST) on February 29, 2012 and as commenter Peter Caltner points out, “the scenic lighting effect ends exactly in [the series of images that Pettit took] at the end of the 76 seconds of the burn duration.”
The original can be found here on the NASA Gateway to Astronaut Photography website, and here’s another image in the sequence.
OK, all you imaging experts out there: until Pettit gives us the real scoop, what are your thoughts?
A light seen from the International Space Station, intentionally 'flashing' at astronaut Don Pettit. Picture credit: Don Pettit, courtesy of the San Antonio Astronomical Association
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We’ve seen lots of images and videos of city lights on Earth as seen from the International Space Station. But if you were down on Earth, flashing a light at the astronauts on the ISS – would they see you? The answer is now definitively, yes. Flashing the space station with beams of light as it passes overhead had never been successfully done—until this past weekend. Astronomers with the San Antonio Astronomy Association (SAAA) and the Austin Astronomy Society combined forces to flash enough light at the ISS from a dark location, as to appear greater than 0 magnitude to astronaut Don Pettit, on board the station. It turns out, they probably didn’t need the two 800 million lumen searchlights they used, but they sure put on a great show.
“It was amazing,” said Keith Little, from the SAAA. “It was almost like the space station lit up when we shined the lights on it. We had no idea it was going to be that bright.”
Image taken by Don Pettit on the ISS of lights flashing from Texas by the San Antonio Astronomy Association and the Austin Astronomy Society. Credit: Don Pettit, image couresty the SAAA
In a highly coordinated and engineered event, the astronomers flashed the two huge searchlights along with shining a one-watt blue laser at the ISS. Pettit explained some of the preparations in his blog on Fragile Oasis: “This took a number of engineering calculations, Pettit wrote. “Projected beam diameters (assuming the propagation of a Gaussian wave for the laser) and intensity at the target had to be calculated. Tracking space station’s path as it streaked across the sky was another challenge.”
Due to lags in communications to and from the ISS (“on space station we receive email drops two to three times a day,” Pettit said), the whole event took weeks to plan.
The SAAA had an “in” with Pettit, as he is friends with one of their members, astrophotographer and author Robert Reeves, and the idea for doing this was actually hatched before Pettit left for space back in November, 2011.
On March 4, about 65 amateur astronomers were in position at the Lazano Observatory in Springbranch Texas. They turned on the searchlights and waited as the ISS was set to make an appearance in the sky. At the precise time, they began flashing the two searchlights at a rate of two seconds on, then two seconds off, in a very non-technical, but effective manner.
“We had two people manually aiming the lights and two people holding plywood up over the lights, and they were manually tracking the space station,” Little told Universe Today.
Pettit, meanwhile, had no trouble seeing the flashes.
“Don sent us an email the next day,” Little said, “and he told us how bright it was, and how he could see the lights even before we started the flash system. He saw it from 10 degrees above from the west to 10 degrees from the Northeast.”
To everyone’s surprise, Pettit could also see the blue laser. “When the spotlights were off, he said he could still see the blue laser, which was shone steadily,” Little said. “I was pretty surprised that the laser light was that visible from space.”
Little ran the laser and he had three people aiding him by watching for aircraft, “It is an FAA offense to shoot an airplane with a laser, so we took all the safety precautions so that we wouldn’t take that chance,” he said.
But if you see the ISS passing overhead, don’t expect that you can flash a light and they will see it. For one thing, they probably won’t be looking for your light. But additionally, Pettit explained in a previous blog post how when we see the ISS best here on Earth, they can’t see much below.
Ironically, when earthlings can see us, we cannot see them. The glare from the full sun effectively turns our windows into mirrors that return our own ghostly reflection. This often plays out when friends want to flash space station from the ground as it travels overhead. They shine green lasers, xenon strobes, and halogen spotlights at us as we sprint across the sky. These well-wishers don’t know that we cannot see a thing during this time. The best time to try this is during a dark pass when orbital calculations show that we are passing overhead. This becomes complicated when highly collimated light from lasers are used, since the beam diameter at our orbital distance is about one kilometer, and this spot has to be tracking us while in the dark. And of course we have to be looking. As often happens, technical details complicate what seems like a simple observation. So far, all attempts at flashing the space station have failed.
But of course, now there has been a success.
Little said the two astronomy clubs put in 3 months of planning with several meetings, and thanks do the donation of the spotlights from SkyView Searchlights, the costs to do the experiment were minimal. “We had lots of volunteers who wanted to be a part of it,” he said.
Is there any science in this, beyond knowing that under the right conditions the ISS astronauts could see lights from people on Earth?
“Well, if the ISS were to somehow lose all communication, which I would find hard to believe, we just showed that we could spot the station and possibly send them messages through Morse code,” Little said.
But Little said the main thrust of the whole event was the novelty of trying to be the first to successfully shine a light at the ISS that the crew could see, as well as trying to bring astronomy to the attention of the general public.
Astronaut Don Pettit has just put another wow-factor in astrophotography from the International Space Station, and provided a whole new perspective on a common but eye-catching photography technique of creating star trails. He posted two images on his Google+ page, with this description: “Star trails. I leave the shutter open for a long period, and our orbital motion makes the stars streak.” Just gorgeous.
See his second stunning image below.
Star trails, with a module from the International Space Station showing up in black. Credit: Don Pettit/NASA
