Oumuamua was the first confirmed object from another star system to pass through our solar system. Its strange shape, unusual ...

Object 3I/ATLAS is now too far from Earth to aim a telescope at, but prior observations showed some unusual behavior. The anomalous nature of the object led astrophysicist Avi Loeb to apply a thought ...

Far from the bright glare of the Moon, a much smaller companion has been quietly keeping pace with Earth, looping around the ...

Hubble images from December 2025 show interstellar object 3I/ATLAS releasing two narrow jets of material as it moves away from the Sun, raising questions about rotation and activity ...

A strange object hurdling through our solar system from interstellar space may, according to one of academia’s most controversial astronomers, have been sent by aliens to see how smart we are. “It is ...

NPR's Ari Shapiro talks with astronomer David Jewitt about what we can learn from the third interstellar object to have entered our solar system, a comet-like object known as 3I/ATLAS. A remarkable ...

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

A comet that was born in another solar system and could be billions of years old is hurdling through Earth’s solar system — a discovery made on July 1 that’s led some astronomers to speculate that the ...