Comet Leonard, which last passed by Earth 80,000 years ago, has been dazzling the night sky before Christmas.

NASA STEREO-A satellite's SECCHI/HI-2 camera captured this imagery of Comet C/2021 A1 (Leonard) Credit: Space.com | footage ...

The incoming space rock is not the only recent green comet; in 2018, the comet 46P/Wirtanen was bright enough for observers to see with the naked eye, and in 2021, the Comet Leonard glowed green ...

An unusual comet that astronomers thought had disintegrated actually survived its close pass by the Sun in 2022 1. The comet in question, C/2021 O3, was spotted in July 2021 on its way from the ...