The comet 3I/ATLAS is taking a long holiday journey this year. It’s visiting from another solar system altogether. Those ...

Later in December, the 3I/ATLAS interstellar comet will get as close to Earth as it ever will. Here's what to know.

A colossal comet from another star is ripping through our solar system right now. Designated 3I/Atlas, this behemoth is up to ...

NASA is providing more images and information about the interstellar object that's passing through our solar system right now ...

The yet-to-be-peer-reviewed findings indicate that comet 3I/ATLAS shares similarities with the icy trans-Neptunian objects — ...

NASA is unveiling close-up pictures of the interstellar comet that's making a quick one-and-done tour of our solar system.

Discovered last month by a telescope in Chile, the comet known as 3I-Atlas is only the third known interstellar object to pass our way and poses no threat to Earth. Astronomers originally estimated ...

3I/ATLAS is only the third known interstellar visitor, hence the prefix “3I.” The second known interstellar body, Comet 2I/Borisov, was discovered by the Russian astronomer Gennady Borisov in August ...

A new image has revealed the clearest glimpse yet of an interstellar visitor zipping through our solar system.Video above: Astronomers discover how planets formThe Hubble Telescope and its Wide Field ...

Learn more about two of the earliest reports of a total solar eclipse and corona, which were recorded in China, and solve ...

Astronomers have spotted an intriguing cluster of objects in the Kuiper belt, an enormous, donut-shaped region of icy objects ...