A polarizing Harvard astronomer known for splashy theories about alien visits has been tapped by the White House to lead a ...

"If Mars could develop this kind of complex crust without plate tectonics, then maybe the conditions needed for habitability ...

An unusual sighting in a NASA image has reignited speculation that something extraterrestrial once existed on Mars.

Scientists in a recent breakthrough have discovered vast hidden magma systems beneath the surface of Mars, marking an “unexpected discovery” leading the researchers closer to finding ...

Astrobiologists think extraterrestrial civilisations grow so much that they hit crisis points, missing the chance to set out ...

God and aliens are having a moment. But what do Christianity and other faiths really teach about ETs?

An instrument on the Perseverance rover has identified large, complex carbon compounds alongside unusual patterns on the ...

An interstellar comet that blazed past the sun and swung by Earth last year could be nearly three times older than our solar ...

Scientists analysing Martian meteorite NWA 8171 have uncovered the first known garnet‑bearing rock from Mars, a discovery ...

Is the rest of the cosmos a pristine environment awaiting the arrival of humanity’s “post-human” descendants? Or is advanced ...

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