Search for Life

One possible reason why we haven't found any intelligent life in the cosmos the Great Filter argument, which says that very few civilizations make it to the advanced spacefaring stage.

Decoding emergent languages in AI can have many benefits.

To explore the galaxy and hunt for resources, intelligent aliens might need to turn their home stars into natural spaceships, a new paper suggests. A few known star systems might fit the bill.

A sample of the asteroid Ryugu returned to Earth by the Hayabusa2 mission was rapidly colonized by terrestrial microorganisms, new research has revealed.

Scientists are using chemical modeling to dissect whether life exists on icy moons in our solar system.

In new testimony, the head of the Pentagon's UFO office told the US senate that it "has not discovered any verifiable evidence of extraterrestrial beings, activity or technology."

The Pentagon's All-Domain Anomaly Resolution Office will testify before the U.S. Senate on Tuesday (Nov. 19) about its latest report starting at 4:30 p.m. ET (2130 GMT).

"Analyzing and understanding the potential threats posed by UAP is an ongoing collaborative effort involving many departments and agencies."

Dirk Schulze-Makuch is a scientist who thinks NASA's Viking landers could have inadvertently destroyed the life they were searching for. In this Q&A, we ask why.

The latest congressional UFO hearing featured testimony from former military personnel who told representatives that excessive government secrecy hides the fact that we are not alone in the cosmos.