Comet 3I/ATLAS is a rare visitor passing briefly through our solar system. Here’s how to find it in the night sky—and what ...
A pair of nascent planets have been caught smashing together around the nearby star Fomalhaut, and in doing so have solved the puzzle of its famous ‘planet’ ...
This interstellar vagabond is only the third large interstellar visitor that we have ever discovered — an asteroid or comet ...
Comet 3I/ATLAS will get closest to Earth on Dec. 19, and astronomers will be watching.
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