Documents might help scientists shed light on unexplained phenomena and government secrets, experts said.

Scientists might have just found Earth's icy, distant cousin a few hundred million light-years away. HD 137010 b is one of ...

Phtanum B may be fictional — but the science behind it isn’t. This speculative expedition imagines a fully developed alien ecosystem shaped by different physics and biology. 🌍 ...

Former president Barack Obama revealed that aliens are “real,” but with one major caveat.

Disclosing government documents about UFOs won't mean much without hard physical evidence for alien spaceships or alien bodies.

The former president appeared to confirm decades-old conspiracy theories. Lawmakers say Barack Obama is simply saying what many Americans already believe.

President Donald Trump has promised to declassify top-secret alien files and UFO documents. Here is what the Pentagon has ...

On Thursday the U.S. president ordered the release of federal files related to UFOs and aliens, although no evidence of extraterrestrials visiting Earth is known to exist ...

President Donald Trump on Thursday said he would direct the Pentagon and other government agencies to release government records related to extraterrestrial life and UFOs.

Physicist Paul Davies looks back at the past century of quantum mechanics—the most disruptive theory in the history of modern science.