Eventually, we'll launch a mission dedicated solely to studying an interstellar object. When that day comes, which one should ...

In the farthest reaches of the planetary plane, at an average distance from the Sun four times that of Saturn, lurks Pluto – ...

When it comes to the search for life elsewhere in the universe, methane and other chemical compounds are seen as signs of ...

Some of these approaches may show promise, but new research indicates much of today’s AI is even more easily duped by false ...

Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.

From Super Mario Bros. to Judge Dredd, these infamous '90s sci-fi disasters prove big concepts can still crash hard.

Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals . Unexplained gases on other planets. Things mistaken for UFOs ...

NASA's Curiosity rover found pure sulfur crystals inside a rock after backing over and accidentally crushing it on May 30, ...

In 1988, the Soviet Union launched two of its most ambitious spacecraft ever built not toward Mars itself, but toward one of ...

Something is absorbing light on the surfaces of Pluto and Saturn’s moon Titan, and figuring out what it is could be crucial to understanding Titan’s complex chemistry ...

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 ...

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 ...