Japan’s XRISM mission reported a faint X-ray halo around interstellar comet 3I/ATLAS in November 2025, highlighting ...

When interstellar visitor 3I/ATLAS exhibited some peculiar movements, speculation arose regarding potential alien origins.

No one knows where the comet came from. It’s like glimpsing a rifle bullet for a thousandth of a second. You can’t project that back with any accuracy to figure out where it started on its path,” said ...

Astronomers remain puzzled about the images of 3I/ATLAS captured several months ago; at the same time, the object’s appearance was barely registered outside the small circle of tracking ...

Add Yahoo as a preferred source to see more of our stories on Google. Earlier this month astronomers were thrilled to discover only the third known interstellar object ever seen in our solar system.

The mysterious Manhattan-sized interstellar object 3I/ATLAS appears to have no cometary tail in new images, which would eliminate the conventional explanation for the surprising “non-gravitational ...