NASA's Stardust-NExT mission took this image of comet Tempel 1 at 8:39 p.m. PST (11:39 p.m. EST) on Feb 14, 2011 for this cool space wallpaper. The comet was first visited by NASA's Deep Impact ...

In early 2015, Comet Lovejoy zoomed toward the outer solar system with a stunning starry background. Highlights of the beautiful backdrop are the bright bluish Phi Persei near the bottom of the ...

The comet appears to burn a bright, lime green color in photographs. But Fraknoi says don't look for something green in the sky. "The naked eye just shows a fuzzy white glow," he said.

NASA has discovered an interstellar comet that’s wandered into our backyard. The space agency spotted the quick-moving object with the sky-surveying Atlas telescope in Chile earlier this week ...

A once-in-50,000-years green comet is passing through our solar system, but if you live in Los Angeles you’re unlikely to be able to spot it for yourself. C/2022 E3 (ZTF) will be closest to ...