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 ...

In the 21st century, the theories regarding the existence of aliens refuse to dial down. Now, the recently resurfaced NASA photo of Martian planet has gone viral on various social media ...

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

The long-running series in which readers answer other readers’ questions comes up with an epic extraterrestrial playlist for Earth’s first contact from beyond the stars ...

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

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 ...

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 ...

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.

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