Rosetta’s comet has been seen changing color and brightness in front of the ESA orbiter’s eyes, as the Sun’s heat strips away the older surface to reveal fresher material. Rosetta’s Visible and ...

Scientists used the Gemini North telescope in Hawaii to obtain images of the third-ever detected interstellar object, Comet 3I/ATLAS, on Nov. 26, 2025. Credit: NSF NOIRLab In the spirit of the season, ...

Forget about expensive space missions; the 'best-yet color image' of the cosmic traveler, comet 3I/ATLAS, has been successfully captured by two amateur astronomers right here on Earth, according to ...

An interstellar comet that originated outside our solar system has just made its closest pass to the sun, brightening dramatically and rapidly as it did so. The reason for the sudden extreme activity ...