"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 ...

Mankind must decide how it’s going to deal with contact with extraterrestrials — and time could be running out, one expert warned — after he sounded the alarm that an incoming ...

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

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

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

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

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

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

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 ...

A Harvard scientist who claims that an object hurtling through space may not be a comet but in fact an alien probe has said it 'may come to save us or destroy us'.