From the Greys to the Nordics, these aliens appear frequently across abduction stories and science fiction tales.

New research suggests that alien radio signals may be transformed by plasma from their home stars — and scientists on Earth ...

Planet Earth could be giving out its own signals, which could in turn be detected by distant astronomers on an alien planet ...

Using emerging radio techniques refined during and after the Second World War, the astronomers detected a powerful radio ...

A Stanford scientist's model suggests many small rocky planets can't sustain atmospheres, potentially explaining the scarcity ...

From "Independence Day" to "Invasion of the Body Snatchers", movies and TV shows are packed with advice for anyone aspiring ...

There’s no data to suggest that aliens exist. However, if we believed they existed and came to Earth, our planet would offer ...

God and aliens are having a moment. But what do Christianity and other faiths really teach about ETs?

One day, probably far off in the very distant future, if astronomers are correct in their assumptions about the vastness of space, Earth will be visited by intelligent beings from another planet.

Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for first contact with extraterrestrial life. Tardigrades—a type of invertebrate ...