A comet tail pointing toward the Sun sounds like a mistake-but that is exactly the geometry Comet 3I/ATLAS put on display as ...

Two ESA spacecraft, Hera and Europa Clipper, are poised to fly through the long tail of interstellar comet 3I/ATLAS, a new paper finds. When you purchase through links on our site, we may earn an ...

New images reveal interstellar comet 3I/ATLAS beginning to grow a signature tail as it zooms closer to the sun ahead of a close encounter with Earth this fall. When you purchase through links on our ...

Astrophotographer Brennan Gilmore has captured spectacular views of the solar wind stripping a vast section from C/2025 A6 (Lemmon)'s tail, as the icy wanderer continues to brighten ahead of its close ...

A comet from another star system is putting on a show that looks uncannily like a heartbeat, with bright jets of gas and dust ...

Comet 3I Atlas is currently ~186 million miles from Earth, which is twice the distance from the Earth to the sun. It is moving away from the Sun now but getting closer to Earth until December 19, 2025 ...

Amateur astronomers across Europe have reported similar sightings. Michael Jaeger of Austria, who has been tracking 3I/ATLAS since Nov. 4, captured a spray of four or five plumes. "We have something ...

This newly discovered comet could soon glow bright enough for the naked eye as it sweeps through October's morning and evening skies. When you purchase through links on our site, we may earn an ...