Forensics inspect the site of a bomb explosion outside an Air Force base in Cali, Colombia, Thursday, Aug. 21, 2025.

Interstellar object 3I/ATLAS shows an unexpected frontal glow that Harvard's Avi Loeb says cannot be explained by sunlight ...

Avi Loeb said bases this hypothesis on a July 21 image captured by the Hubble Space Telescope and shared by NASA.

Astronomers estimate it's roughly the size of the island of Manhattan. It's only the third known object from interstellar space to pass through our solar system.

The fastest interstellar object continues to be bizarre; is it rotating weirdly or is something off about its surface?

A respected Harvard astrophysicist has shared new claims about the mysterious interstellar object in our Solar System, saying there are signs it is not an ordinary comet.