New 3I/ATLAS images from NASA and the ESA suggest the interstellar comet is active as it approaches Earth in December.

I/ATLAS attracted attention when it was confirmed to be only the third body originating from another star system.

NASA’s Hubble Telescope photographed the comet on November 30. At that time, the comet was still very far — about 178 million ...

Discovered on July 1 by the NASA-funded ATLAS telescope in Chile, 3I/ATLAS is only the third confirmed visitor from another ...

The Hubble Space Telescope has once again dazzled scientists and stargazers alike with a striking image of a galaxy once ...

NASA’s Hubble Space Telescope captured a deeper look at interstellar comet 3I/ATLAS, with its Wide Field Camera 3 instrument, ...

Astronomers have long been concerned about reflections from satellites showing up in images taken by telescopes and other ...

NASA scientists are sounding an alarm that would have been unthinkable a decade ago: the same commercial satellite ...

The Hubble Space Telescope has turned its sharp eye toward a ghostly swirl of stars and gas known as the "Lost Galaxy," given ...

Hubble’s new image shows the Calabash Nebula’s dying star blasting gas at immense speeds, revealing dramatic lobes, ...

NASA's James Webb Space Telescope is by far the most powerful observatory ever launched into space. Even Webb's very first images show why NASA spent 25 years and $10 billion. The Hubble Space ...

Astronomers have already warned that SpaceX's Starlink satellite network contributes to blemishes on images from ...