A rare visitor from another star system prompted SETI to hunt for alien technology, but the mysterious object appears to be a ...

A cigar-shaped rock zooming through our Solar System — the first object from a foreign star system ever spotted in our midst ...

The SETI Institute, the nonprofit that conducts a search for extraterrestrial intelligence by examining radio waves for artefacts ...

A newly identifiedplanetary system is forcing astronomers to rethink how worlds form and evolve, as a rocky planet appears where ...