| December 15
New Star Names | | |
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| IAU approves 86 more new star names | | | "These professional astronomers are claiming the exclusive right to give 'approved' names to the stars. But the stars - and the sky - belong to all of us." | | | Sirius in many colors | | | When you see bright Sirius low in the sky, you're seeing it shine through an extra thickness of Earth's atmosphere. Then its colorful flashing might surprise you. | | | A grand year for the Geminids | | | The 2017 Geminids were thought to have a better-than-average chance of producing a rich display, since their parent body - a strange rock-comet called 3200 Phaethon - is nearby. And so it was! Photos here. | | | | | | | | | | | |
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| | | | An EarthSky lunar calendar is sure to delight. Or give the gift that gives back! Check out the new colors and designs of our EarthSky Cares Tees. A percentage of proceeds collected will be donated to select organizations. | | | | | |
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|  | | Sirius in many colors | | Amanda Cross in the UK caught these images of the star Sirius - our sky's brightest star - on December 11. "No color enhancements were made," she wrote. Learn why Sirius is so colorful. | | | | | |
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 | | A grand year for the Geminids | Scott Kuhn in Chatsworth, Georgia used a fisheye lens to create this image of a curved Geminid meteor on the morning of December 14. In the real sky, the meteor would have appeared in a straight line. | | |
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