Person who commands, pilots, or serves as a crew member of a spacecraft.
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It's been nine years since we launched American astronauts, from American soil.
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Getting there and finding proof, however, might require astronauts drilling on Mars.
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However, it soon became apparent that the astronauts were developing disturbing symptoms.
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We were all gold-pinned astronauts; most of us gold-plated several times over.
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Power upgrades to the International Space Station Both astronauts are veteran spacewalkers.
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The most you can hope for is that you're good astronaut material.
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Then you learn to achieve orbit, and bring your astronaut home safely.
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One American astronaut and two Russian cosmonauts are currently aboard the ISS.
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The new suits come as a much-needed upgrade to NASA's astronaut wardrobe.
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We're saddened by the loss of astronaut John Young, who was 87.
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Though this space traveller was manmade, it had nothing to do with us.
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Postgate remembered that in one of their Noggin stories they had already introduced a tiny space traveller called Moonmouse.
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They make up one of the most unusual collection of space travellers launched into orbit.
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Two young researchers, from the University of Limerick and University College Dublin, hope to improve things for space travellers, however.
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So, as a service to future space travellers, here are five ways to help keep loneliness in space at bay.