Popular culture imagines aliens as creatures made of flesh and bone — but some researchers argue that advanced civilizations ...

Are aliens real? The question has animated conspiracy theories for decades and enthralled at least one former president of ...

Donald Trump’s pledge to release official files relating to UFOs has intrigued conspiracy theorists who suspect the US government has hidden evidence of alien activity on Earth.

Science fiction has imagined everything from little green men to tentacled monsters—but real biology may offer clearer clues. Evolution follows universal rules, meaning alien life on Earth-like ...

If you've been following exoplanet research over the last couple of years, you've definitely heard of K2-18b. Located 124 ...

Lara Trump recently claimed the president already has a speech prepared on UFOs.

For more than six decades, astronomers have listened for possible signals from extraterrestrial civilisations, with no confirmed detection to date. A .

In the spring of 1967, a series of unusual sightings began to grip the ...

Barack Obama was having a bit of fun with a podcaster on whether aliens are real. Alas, even ex-presidents can’t just speak ...

Some people thought he was confirming aliens exist. But he later clarified on Instagram that during his time in office, he ...

US President Donald Trump said he was ordering federal agencies to begin “identifying and releasing” government files related ...

We got a kick out of an old chestnut among conspiracy theorists -- whether intelligent life exists elsewhere in the universe and whether any of those aliens have visited Earth -- that rose to the ...