A former CIA-funded researcher claimed that "at least four" different alien species have been discovered in wreckage ...

Trump wrote no caption to shed light on the meaning of the image, triggering speculation online.

Pentagon declassified UFO records include 1969 Apollo 12 audio of astronauts describing unexplained visual flashes seen ...

Discover 15 shocking conspiracy theories that continue to spark debate around the world. These stories still leave people ...

Star Wars used to be the end-all, be-all in space sci-fi, but in the years since the original trilogy, others have rushed in ...

This goes against the previous theory, which has long suggested that Nereid is actually an object captured from the Kuiper ...

Lunar Outpost has unveiled designs for a new Pegasus moon rover for a 2028 launch — but the Colorado-based company isn't ...

Neptune's mysterious, far-flung moon Nereid may be the last of the planet's original companions. Scientists at the California ...

Neptune’s oddball moon Nereid may be the sole remnant of an earlier system, formed near the planet rather than being pulled ...

Elon Musk's rocket company didn't hold back on its nerdiness when revealing its finances to Wall Street. We explain what the ...

Neptune’s third-largest moon, Nereid, could be an intact survivor from the planet’s original satellite system, upending ...