SPACE
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The planet is located in the "sweet spot" of its parent star's habitable zone.
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NASA's Grail probes have returned their first view of the far side of the moon.
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The spectacular new image was captured by one of the telescopes at the La Silla Observatory in Chile.
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Sunspots are darkened patches on the sun that are not well understood.
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NASA's Interstellar Boundary Explorer has detected "alien matter" streaming into our solar system.
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The sun's violent activity expands Earth's atmosphere, which increases the rate that space junk falls from orbit.
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