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

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

Scientists have identified new clues that could help astronomers spot one of the most famous hypothetical alien ...

First, there was the release of the so-called UFO files by the Trump administration in May, which sparked a wide range of reactions from religious Americans. Then there was a new blockbuster summer ...