Meet comet C/2025 F2 (SWAN): a celestial body glowing green as it swings around the sun, currently visible in the early morning hours with backyard gear, such as small telescopes or binoculars.

The newest comet to create a buzz among sky watchers was spotted recently, and it will be coming closer to Earth in October - possibly giving us a better look at this once-in-a-lifetime visitor from ...

Images of interstellar comet 3I/ATLAS snapped during the September 7 total lunar eclipse seem to suggest that the latest visitor to the Solar System may be turning green. That's not all that strange ...

CAPE CANAVERAL, Fla. — NASA has discovered an interstellar comet that’s wandered into our backyard. The space agency spotted the quick-moving object with the Atlas telescope in Chile recently, and ...

NASA's Perseverance rover took this selfie in May 2025. The Navcam used to capture the apparent comet images is located just below the large white camera at the top of the mast. NASA/JPL-Caltech/MSSS ...