PARIS, France — An interstellar comet that blazed past the Sun last year could be nearly three times older than our Solar ...

Moon dust may be hiding signs of pulverised alien technology, scientist says - Grain-sized remnants of alien technology may ...

Humanity has already sent five spacecraft on trajectories that will eventually carry them beyond the Solar System, ...

Even at this early stage in our spacefaring age, humanity has already begun sending probes that will eventually reach other ...

The universe is at it again; scientists have been baffled by a discovery that turns all the knowledge they have on planetary systems on its head. Scientists have discovered an alien solar system ...

Life may not get blasted off any of the known "super-Earth" worlds as readily as it can from our planet, scientists find. The discovery suggests that any intelligent aliens that develop on such ...

Scientists search for signs of alien life on a visitor from another solar system - 3I/ATLAS is the third known interstellar ...

Rare interstellar visitor the size of Manhattan carries secrets from distant star system Controversial 'comet': An artist's rendition of Comet 3I/ATLAS as it rockets through our Solar System at 58 km ...

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 ...