During future space missions, humans may finally encounter extraterrestrial life forms, settling the age-old question of whether we are alone in the cosmos. But what if alien biology is so different ...

How can radio astronomers successfully identify extraterrestrial radio signals while discerning them from Earth-based radio signals? This is what a recent study published in The Astronomical Journal ...

Protecting planets from extraterrestrial invasion might sound like a job that only exists in science fiction. But NASA recently posted a "Help Wanted" ad for exactly this position, under the name ...

NASA has a job opening that sounds straight out of science-fiction. The "planetary protection officer" position will ensure that Earth is not contaminated by matter brought back from space, and that ...

A NASA scientist says her aim is to stop deadly alien viruses from reaching Earth and vice versa. Dr Moogega Cooper's job is to prevent such "contamination" being brought back home by astronauts and ...