NASA STEREO-A satellite's SECCHI/HI-2 camera captured this imagery of Comet C/2021 A1 (Leonard) Credit: Space.com | footage courtesy: NASA/NRL/B.Gallagher | edited by Steve Spaleta ...

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Pfalzner's models show that interstellar objects — bodies ejected from other star systems — could be captured by these planet ...

The interstellar comet 3I/ATLAS, a rare visitor from outside the Solar System, might have been spewing gases for months ...

A retreating glacier has revealed a new island in Alaska, as lake water filled in to surround a land mass once hugged by ice.

This quiz invites you to chase comets through time and space, from ancient omens to modern scientific marvels.

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Utah prosecutors said on Tuesday they will seek the death penalty for the suspect in conservative activist Charlie Kirk's ...

A study shows spacecraft could intercept interstellar comets with today’s technology, unlocking new insights into material from beyond our solar system.