New full-color images of interstellar comet 3I/ATLAS capture a rare visitor in vivid detail just days before it makes its closest pass by Earth, revealing a shifting palette of reds and greens that ...

The Rosetta spacecraft's rubber ducky comet has slowly changed color as it moved through space, from red to blueish and then red again. According to a new paper published Feb. 5 in the journal Nature, ...

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 ...

A color image of Rosetta's comet buddy has emerged online and may shine some brightness on a comet that has become famous in black and white. Freelance writer Amanda C. Kooser covers gadgets and tech ...

A review of data taken over the course of the two-year Rosetta mission shows that comet 67P/Churyumov-Gerasimenko was sometimes reddish in appearance, while at other times it assumed a bluish hue.

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, ...