Another comet, C/2025 A6 Lemmon, is possibly becoming bright enough to be visible to the naked eye in the coming days.(WTOP/Greg Redfern) A year ago, the D.C. region was enthralled with Comet A3 ...

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 Government shutdown ...

A mysterious interstellar comet — just the third such object ever confirmed to have entered our solar system — streaked past Mars last week. A spacecraft in orbit around the red planet had a front-row ...

"We study cometary bodies because they act as time capsules, sealing in material from their formation billions of years ago." The Europa Clipper spacecraft may soon be pummeled by charged particles — ...