Mankind must decide how it’s going to deal with contact with extraterrestrials — and time could be running out, one expert ...

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

A cosmic visitor is stirring an earthly debate. A Harvard astrophysicist has suggested the incoming interstellar object ...

Massive interstellar object 3I/ATLAS, larger than Manhattan, shows unusual glow pattern and planetary alignment that Harvard ...

A controversial new paper questions whether the interstellar object 3I/ATLAS is a potentially dangerous alien probe, similar ...

I/ATLAS is just the third recorded interstellar object to enter the solar system. However, the scientific consensus is that ...

Discovered last month by a telescope in Chile, the comet known as 3I-Atlas is only the third known interstellar object to ...

The strange 3I/ATLAS comet that was recently discovered to be speeding through our solar system could actually be the work of ...

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

A giant “alien” comet had a recent near-miss with our solar system’s most notorious star: the sun. Experts believe the comet – known formally as 96P/Machholz 1 – came from somewhere else ...

The Hubble Space Telescope captured the best picture yet of a comet visiting our solar system from another system. The photos ...