Under the Sea To create conditions that better mimic microgravity, astronauts 63 feet below the ocean’s surface wear small pieces of foam on their wetsuits to become more buoyant.
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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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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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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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Spending long periods at low gravity may alter genes, suggests a new experiment involving a magnet-powered trick used on Earth to simulate weightlessness in space.
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Space pioneers could focus on answering, arguably, the most profound question ever asked by humans: are we alone in the universe?
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