| | December 12 Comet Wirtanen Closest to Sun Today | | | |
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| | | | | | | Great week for stargazing! To glimpse comet Wirtanen this week - and maybe catch some Geminid meteors - set your location at NASA's Night Sky Network, then search for clubs and events. Or visit the Virtual Telescope Project for a free, online viewing of comet Wirtanen on December 12 and 17.  Note: 22 UTC is 5 p.m. Eastern on December 12 and 16; translate UTC to your time. | | | | | |
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| | | Find the Geminids' radiant point | Why is the Geminid meteor shower best around 2 a.m.? It's because that's when the shower's radiant point - near the bright star Castor in the constellation Gemini - is highest in the sky. Read more. | | | | |
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| | See it! Images of comet 46P/Wirtanen | Emilio Lepeley sent this fine picture of comet Wirtanen from Elqui Valley, Vicuna, Chile. See videos and more photos. Have you seen the comet yet? Here's how. | | |