"We should put all possibilities on the table that it's a rock, a comet, or something else until we get the evidence, the ...

Harvard astrophysicist Avi Loeb has cowritten a research paper speculating whether the comet 3I/ATLAS is in fact "hostile" ...

A Harvard astrophysicist has suggested that a newly discovered comet passing through our solar system might be an alien spacecraft in disguise. The claim by Professor Avi Loeb has split opinion in the ...

The NSF-DOE Vera C. Rubin Observatory in Chile recently captured rare footage of the visitor known as 3I/ATLAS — only the ...

A comet that was born in another solar system and could be billions of years old is hurdling through Earth’s solar system — a ...

The Vera Rubin Observatory has released a video of the comet 3I/ATLAS captured by the world's largest digital camera.

Harvard astrophysicist Avi Loeb suggests a comet passing through the solar system may be an alien spacecraft, sparking debate among experts.

Harvard astronomer Avi Loeb suggests we could use NASA's existing Juno spacecraft to intercept the path of interstellar object 3I/ATLAS.

"The consequences, should the hypothesis turn out to be correct, could potentially be dire for humanity," said Avi Loeb.

NASA has discovered an interstellar comet that's wandered into our backyard. The space agency spotted the object with the Atlas telescope in Chile earlier this week, and has confirmed it was a comet ...

"It could represent some of the oldest and most pristine water ever observed, formed in another planetary system and ...

An image showing subtle changes in comet Leonard’s tail over two frames, captured by the HI-2 telescope aboard NASA’s STEREO-A spacecraft. (NASA/NRL/Karl Battams) NASA/NRL/Karl Battams ...