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 have suggested.

The Science: Europa has been considered as a top contender for alien life for even longer than Enceladus, thanks to its massive under-ice liquid water oceans. It also displays water vapor plumes ...

Recent research suggests that our solar system could already be hosting alien probes, potentially observing us from a distance. This idea aligns with a 2023 statement from a Pentagon UFO chief who ...

An odd, cigar-shaped object has been stumping scientists ever since it zoomed into our solar system last year. Dubbed 'Oumuamua (pronounced oh-MOO-ah-MOO-ah), it was first seen through the Pan-STARRS ...

Is 3I/Atlas an interstellar alien vessel or simply an intriguing, unique rock hurling through the cosmos? That debate has been raging ever since the comet, only the third known interstellar object to ...

Those concerned that 3I/ATLAS' arrival to our solar system meant that some sort of alien invasion was imminent can breathe a sigh of relief. And they have the evidence to prove it. To be clear, the ...

The idea sounds like science fiction, yet a Canadian researcher believes it deserves serious attention. Professor Alex Ellery of Carleton University suggests that self-replicating probes from other ...

A conceptual image of the interstellar comet 3I/ATLAS as it streaks across the night sky. When astronomers first spotted the fast-moving object 3I/ATLAS hurtling through the solar system in July 2025, ...

Discover how the Mars orbiter captured unprecedented images of interstellar comet, offering unique glimpse into the chemistry ...

By the time the rumours reached the 'alien probe' stage, 3I/ATLAS had already slipped past the Sun and was heading back into the dark, doing what comets do best: ignoring human drama. Yet a faint, ...