Alien probes could already be hiding somewhere in our Solar System – and our current surveys are nowhere near good enough to rule them out, according to a NASA‑linked study presented this month by ...

Harvard astrophysicist Avi Loeb has floated the provocative idea that humans might themselves be alien‑made 'autonomous probes,' built through advanced synthetic biology rather than evolving entirely ...

The White House has appointed Harvard astronomer Avi Loeb to lead a new scientific advisory team investigating unidentified ...

It’s been almost ten years to the day since this experience, and I still get a little thrill in my chest when I think about ...

Between the mid-1970s and early 1980s, two physicists, Michael Hart and Frank Tipler, published a controversial series of papers arguing that extraterrestrial intelligence didn't exist. As they argued ...

Add Yahoo as a preferred source to see more of our stories on Google. The night sky looks crowded, but physics may keep distant civilizations from ever meeting or even noticing one another. (CREDIT: ...

WD 1856 b circles the burnt-out core of a dead star at a distance that seems almost impossible. The giant planet skims around ...

Do you remember when they said that in space, no one could hear you scream? The tagline for the cult classic Alien movie has, in a way, become a tagline for the whole subgenre of science-fiction, at ...

Nature harbours a chilling arsenal of predators that don’t just kill their prey — they dissolve it. These eight grisly ...

A Titan human mission is no longer just a wild idea from science fiction. Scientists are now starting to discuss it as a serious long-term goal after the Moon and Mars. That does not mean a crew is ...