Alien conspiracy theory is getting respectable (with a little help from "Disclosure Day"), and it has helped bring America ...

As UAP files are declassified and Disclosure Day hits cinemas, physicists argue that any aliens capable of reaching Earth ...

Using the Keck Observatory, astronomers measured the spins of dozens of giant planets and brown dwarfs orbiting distant stars ...

Astronomers studying the atmospheres of several intensely heated exoplanets uncovered an unexpected pattern that may reveal a hidden property of these distant worlds.

The United States government's recent release of hundreds of previously classified unidentified anomalous phenomena (UAPs) ...

If and when SETI discovers alien life, then a revised Declaration of Principles guarantees that once the discovery has been ...

Venus, Jupiter and Mercury are due to form a planet parade in June visible across the US. What to know, including the date ...

The winds on seven hellish alien worlds are moving in the wrong direction. That strange anomaly just cracked open one of ...

The TRAPPIST-1 system, located about 41 light years from Earth, has been a focal point of much exoplanetary discussion—mainly ...

The object, called 3I/ATLAS, is only the third interstellar visitor ever detected passing through our Solar System.

The SETI Institute is the latest to confirm what scientists have long suspected: the interstellar 3I/ATLAS comet is not an ...

Scientists have searched one of the only known visitors to us from another solar system for signs of alien technology – and ...