Scientists are raising concerns that we may be overlooking evidence of extraterrestrial life even when it is present. Hidden ...

Somewhere out there, a planet roughly the size of Earth may be orbiting a distant star in conditions that could support life.

An unusual sighting in a NASA image has reignited speculation that something extraterrestrial once existed on Mars.

Beneath the icy silence of Antarctica's famous Dry Valleys lies a world so unusual that it often resembles another planet.

Disclosure Day had people talking for its fresh take on alien contact and powerful sci-fi themes. These films follow the same ...

A polarizing Harvard astronomer known for splashy theories about alien visits has been tapped by the White House to lead a ...

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

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

Scientists in a recent breakthrough have discovered vast hidden magma systems beneath the surface of Mars, marking an “unexpected discovery” leading the researchers closer to finding ...

Scientists propose building a lab on the moon to screen Mars and other space samples for alien microbes before they ever ...

NASA's Perseverance rover has uncovered one of the most intriguing clues yet in humanity's search for life beyond Earth.