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Read news from the world of astronomy for the week of December 10, 2021.
Latest News
NASA announced a recommendation last week to end support for the International Space Station by 2030.

New research may explain why satellite galaxies align themselves around the Milky Way.

Galaxy clusters take eons to collide. Now, astronomers have caught a pair of merging clusters in an in-between stage.

A satellite galaxy dwarfed by the Milky Way has a black hole nearly as massive as the one at the center of our galaxy.

Astronomers have imaged a giant planet around a massive pair of stars, a discovery that challenges our notions of how planets form.

The Imaging X-ray Polarimetry Explorer will shed new light on energetic and enigmatic sources such as magnetars, supernovae, and black holes.

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Observing Highlights
The first-quarter Moon is tonight (exactly so at 8:36 p.m. EST). Comet Leonard is at its best right now! It's about magnitude 5.5, low due east tomorrow morning. Go out just before the very first light of dawn, the comet will be about 10° above horizontal.

At first glance, the annual Geminid meteor shower appears to be on a collision course with a bright Moon. But a closer look reveals a happy window of dark skies.

December’s solstice brings the longest northern nights, and it’s a busy month for stargazers.

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Sky & Telescope and friends report on the total solar eclipse that occurred over Antarctica earlier this week.