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.

In recent years, the scientific community has been abuzz with discussions about interstellar objects passing through our solar system. One such object, dubbed ‘Oumuamua, has sparked particular ...

In early July, astronomers spotted a strange, fast-moving object racing toward the Sun. Named 3I/ATLAS, the celestial body immediately caught attention because of its unusual trajectory — one that ...

I/ATLAS has passed its closest point to Earth, meaning we will soon lose sight of it for good. Some scientists want to send a spacecraft to chase down the alien comet — or the next interstellar object ...