A team of astronomers claims to have sniffed out a “biosignature” in the atmosphere of a distant planet called K2-18b. But ...

The cloud of hydrogen is shaped like a crescent and “literally glowing in the dark" like fluorescent stickers on a child's ...

A brilliant flash from deep space once baffled scientists. But now, that mystery has been solved—and it reshapes what we know ...

Circus Interstellar, a brutal arcade shooter dripping with dark sci-fi horror, is available right now on Xbox One and Xbox Series X|S.

Oumuamua, the first known interstellar object to pass through our solar system. But by the time we saw it, it was already ...

What really happens when a spacecraft leaves the solar system? NASA’s Voyager probes have crossed into interstellar space—and ...

Comedy, heart, suspense and multiple versions of Robert Pattinson are among the three underrated sci-fi movies you should ...