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Scoop.it!
Why astronauts in the space station are weightless?The most common answer is because there is no gravity in space. But of course there is gravity in space, especially where the space station is located (only about 400km from Earth's surface). What is the right answer? 
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Scoop.it!
From
io9
Humans produce two flammable gases: hydrogen and methane. Flammable gases accumulate in an enclosed space and can ignite. Astronauts are humans who spend lots of time in enclosed space.
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Scoop.it!
A new augmented reality unit developed by ESA can provide just-in-time medical expertise to astronauts. All they need to do is put on a head-mounted display for 3D guidance in diagnosing problems or even performing surgery. Articles about AUGMENTED REALITY: http://www.scoop.it/t/science-news?page=1&tag=Augmented%20Reality
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