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 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 ...

Engineers have designed a compact, battery-powered radio probe that could help unlock the secrets of alien planets. The proposed small probe, known as the Gravity Imaging Radio Observer (GIRO), would ...