Trip Across Canada's Arctic Mimics Mars Visit

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Space Station Has Close Call With Space Junk

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Redux: Sleeping In Space

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Aging Satellites Threaten Climate Research Future

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New Telescope To Hunt For Earth-Like Planets

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Celebrating The International Year Of Astronomy

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Space Invaders? Microbes' Travel Raises Concern

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Failed Launch Puts NASA Satellite In Ocean

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NASA Loses Carbon-Measuring Satellite

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Watching The Skies For Comet Lulin

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NASA Satellite To Track Carbon Dioxide Globally

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Hazardous Junk Piling Up In Space

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Astrophysicist Tyson On 'Pluto Files'

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