In a dramatic U-turn, Harvard astrophysicist Professor Avi Loeb has now admitted it is “most likely natural”, with experts ...

The vast silence of the cosmos was momentarily interrupted on Friday as a mysterious celestial traveller reached its closest ...

While online conspiracies swirl, comet 3I/ATLAS made a close pass by Earth on Dec. 19, giving astronomers a rare glimpse of a ...

Since its discovery, some people have speculated that interstellar visitor 3I/ATLAS could be alien technology. Harvard ...

Did an alien spacecraft just fly by Earth? That’s the question a lot of people, including Harvard astrophysicist Avi Loeb, are asking right now. A massive interstellar object called ...

A composite image of the hydrogen plume surrounding comet 3I/ATLAS. Credit: NASA It's official, if far too late for some people's liking: Interstellar object 3I/ATLAS is a comet. We already knew that, ...