New telescope images show interstellar comet 3I/ATLAS brightening and turning green after solar heating, raising questions ...

The interstellar comet 3I/ATLAS reaches its closest point to Earth on Dec. 19, allowing close study with no threat to the ...

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

It was back in July of this year that the Night Sky column first commented on the appearance of a strange object that had entered our solar ...

Astronomers have followed 3I/ATLAS since its discovery on July 1. Hubble photographed it on July 21 from 277 million miles ...

New images taken with the Gemini North telescope in Hawaii confirm that the interstellar comet 3I/ATLAS has gotten brighter ...

A mysterious interstellar comet known as 3I/ATLAS is about to make its closest approach to Earth in December 2025. Here's ...

Astronomers studying the interstellar comet known as 3I/ATLAS have detected a vast and unexpected X-ray halo extending ...

NASA has lost contact with its MAVEN spacecraft that has been orbiting Mars for more than a decade. Here's what we know.

Physicist Brian Cox says he’s disappointed to see people focus on alien theories when discussing 3I/ATLAS, which he notes is older than Earth ...

The SpaceX-ULA-SpaceX trio are slated as the record-extending 107th, 108th and 109th orbital rocket launches of the year from Florida's Space Coast.

Interstellar object 3I/ATLAS is making its closest approach to Earth in just over a week from now, coming within 167 million ...