This video breaks down why K2-18b has suddenly become one of the most important planets in the search for life beyond Earth.

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.

The Harvard astrophysicist has devoted years—and thousands of interviews—to the idea that mysterious objects streaking ...

Astronomers have recently started looking for black holes bigger than galaxies. Brian Lacki explains how these “stupendously ...

Vanity Fair reports from the Capitol Hill conference, where members of a sprawling community of national security experts and ...

This is the story of a mysterious finding in New Hampshire, pieced together from the incident summary sheet and official ...

NEW YORK (AP) — The largest digital camera ever built is starting to capture images of unseen corners of the universe.

NASA's Mars Reconnaissance Orbiter took this photo as Perseverance crossed the 42-kilometer finish line—or is it a starting ...

One is a feminist superhero film. The other is a an anti-immigrant tirade. Both teach the same flawed lesson.

President Donald Trump’s plan to “fill the digital potholes” and use AI to quickly redesign every government website isn’t ...

The Supreme Court will rule on the constitutionality of President Donald Trump’s order on birthright citizenship declaring ...