A U.K.-led mission aims to determine if microbial life exists in Venus’s clouds by detecting phosphine and ammonia.

"Our work supports both the scientific quest to answer the question 'Are we alone?' and practical efforts to manage the ...

A new study reveals that a common human technology may be quietly broadcasting our presence to alien civilizations—without us even realizing it.

In April, scientists announced that they had used NASA’s James Webb Space Telescope to find a potential signature of alien ...

A mysterious visitor from another solar system could be an alien spacecraft, according to a leading Harvard astronomer.

The team found that the planet, dubbed HIP 67522 b, orbits its parent star so tightly that it appears to cause frequent ...

The Black Knight satellite myth claims that a mysterious object—possibly of alien origin—has been orbiting Earth for 13,000 years. This theory combines a mix of unrelated events, including Nikola ...

The skepticism and debate around the question of "are we alone in the universe" makes the field of astrobiology more cautious ...

Stories about the existence of aliens, and our chances of detecting them, tend to be positive. We are told that we might ...

After a months-long investigation, it found, “U.S. military fabricated evidence of alien technology and allowed rumors to fester to cover up real secret-weapons programs,” the Wall Street ...