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top news story
NASA / CXC / A. Hobart
The Spin's the ThingAstrophysicists’ new work suggests that a black hole spits out a more powerful jet if it’s spinning the same direction as the hot material falling into it. The conclusion adds to an ongoing debate about how (or whether) the direction of a black hole's spin affects the outflow it spews into space. > read more
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observing
 This Week's Sky at a Glance
Venus and Jupiter in the dusk are now 30° apart and closing. On the other side of the sky, the Moon marches much faster toward Mars. > read more
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equipment info
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Photo Gallery
 Photo Gallery
See the latest amateur astrophotos from visitors to our online photo gallery. > read more
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