Space
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Orionids meteor shower expected on Tuesday morning (courtesy Halley's Comet): Here's how and when you can watch it
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NASA Mars Odyssey orbiter watches Siding Spring comet zip past at a hair's breadth
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Partial solar eclipse this week: Keep your eyes peeled if you live in North America
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Orionid meteor shower peaks Oct. 21. How to watch and what to expect
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Big bully: Milky Way steals precious star-forming gases from neighboring dwarf galaxies
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NASA preps for Comet Siding Spring's Mars flyby: Why scientists are going gaga over it
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X-37B touches base finally: What was the secretive space plane up to for nearly 2 years in orbit?
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Strange signal in X-ray spectrum from sun hints at elusive dark matter
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Siding Spring comet Mars flyby 2014: How and when to watch this once-in-a-million-years event
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Saturn moon Mimas may be hiding subterranean ocean: Will alien life forms be found?
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Milky Way is a bad galactic neighbor. Here's why nearby dwarf galaxies hate it
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Mimas: Wobbly 'Death Star' moon of Saturn is hiding a secret. What could it be?
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