Strange interstellar comet speculated to be alien spacecraft is older than Solar System - Scientists say comet represents ...

Grain-sized remnants of alien technology may get caught in solar wind and land on plants and moons close to us ...

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

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 ...

Alien probes could already be hiding somewhere in our Solar System – and our current surveys are nowhere near good enough to ...