Is alien life really out there? For decades, humanity has looked at the night sky and asked the same question. Now, according ...

A new exoplanet model screens rocky worlds by their ability to retain atmospheres over geologic timescales, helping narrow ...

From insects to the moon, people have mistaken very Earthly phenomena for UFOs many times.

From the Greys to the Nordics, these aliens appear frequently across abduction stories and science fiction tales.

The recent discovery of an enigmatic substance on the surfaces of both Titan, Saturn’s largest moon, and Pluto, our solar ...

Moon bases, living to 100 and (finally!) flying cars. What 2076 and our future will look like may be stranger than we expect.

A Stanford scientist's model suggests many small rocky planets can't sustain atmospheres, potentially explaining the scarcity ...

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

The long-running series in which readers answer other readers’ questions comes up with an epic extraterrestrial playlist for Earth’s first contact from beyond the stars ...

Explore the eerie, unaired original opening, complete with haunting music and a very different captain's log narration that ...

Extraterrestrial visitors are not only already here – they are landing in a top secret “alien airport” hidden away in the ...

SpaceX’s IPO was predictably a success, making Elon Musk the world’s first trillionaire. He reiterated his goal of traveling ...