(CBS Local/CNN)-- A mysterious cigar-shaped object spotted tumbling through our solar system last year may have been an alien spacecraft sent to investigate Earth, astronomers from Harvard University ...

A scientist has recently posited that a mysterious interstellar object, potentially of extraterrestrial origin, appears to be dramatically decelerating, as if applying brakes. This intriguing ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. A recent Gemini Observatory ...

I/ATLAS is a natural celestial object with all the qualities typical to a comet. It doesn't just belong to our solar system. It's a guest from somewhere beyond.

Since it was first spotted in early July, scientists have been fascinated by 3I/ATLAS — the third object in history to have been spotted cruising through our solar system from interstellar space. The ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

A Harvard astronomer is making waves by suggesting that a massive interstellar object hurtling through our solar system might be an alien spacecraft. Professor Avi Loeb, who also serves as director of ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

Space exploration consistently reveals phenomena that challenge our understanding of the cosmos, from the behavior of distant objects to the composition of alien worlds that defy terrestrial ...