This video breaks down why K2-18b has suddenly become one of the most important planets in the search for life beyond Earth.
A polarizing Harvard astronomer known for splashy theories about alien visits has been tapped by the White House to lead a ...
The “Wow!” signal is one of our best pieces of evidence for aliens, but researchers are building a compelling case for a more ...
An unusual sighting in a NASA image has reignited speculation that something extraterrestrial once existed on Mars.
Somewhere in the Mojave Desert, a gleaming white dome sits in the middle of nowhere, and the story behind it is stranger than ...