A mysterious object, hurtling through space and heading towards Earth, has experts predicting it could reach us today. The object, known as 3I/ATLAS, has been the subject of speculation for months.

Voyager 1 is on a journey that will outlast civilizations, outlive the Sun’s familiar neighborhood, and eventually drift into ...

Over the last decade, since the work of a shadowy government program called the Advanced Aerospace Threat Identification Program was made public in 2017, there has been growing public pressure on the ...

NASA's Apollo 17 crew reported seeing three mysterious dots and sparks that resembled fireworks, according to new files released by the Pentagon.

Harvard astronomer, Avi Loeb, speculates it could be an artificial alien object. NASA experts maintain that the object appears to be a natural comet with unique variations. Rare interstellar object 3I ...

3I/ATLAS has passed its closest point to Earth, meaning we will soon lose sight of it for good. Some scientists want to send a spacecraft to chase down the alien comet — or the next interstellar ...

The new Pentagon website includes 162 declassified files on UFOs, or unidentified aerial phenomena. Some experts wonder if ...

The Pentagon's release of files might help scientists shed light on unexplained phenomena and government secrets, experts said.