Astronomers have found a breakthrough the "little red dots" mystery, suggesting they're an extreme object powered by ...

New analysis of ALMA observations of interstellar comet 3I/ATLAS show its water carries a chemical signature pointing to a colder, more distant origin than any comet ever measured.

A mysterious comet from beyond our solar system is giving astronomers a rare glimpse into alien worlds — and it may have ...

More files and photos will be released to the public on a rolling basis at War.gov/ufo. Photos from the FBI, multiple Apollo ...

Over the last decade, since the work of a shadowy government program called the Advanced Aerospace Threat Identification ...

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

Unlike active galactic nuclei (AGN) that emit lethal levels of X-ray radiation, the centers of the Milky Way and these little ...

Just hours after the Pentagon released more than 160 newly declassified UFO files teased by President Trump as "very ...

The Pentagon released a new tranche of UFO files on Friday (May 8). Among the documents are nearly 30 videos, which feature a ...

Looking for a sky event this week? Check out our full Sky This Week column. May 7: Io crosses Jupiter Let's take advantage of the moonless early-evening sky to enjoy two lovely face-on spiral galaxies ...

The Pentagon on Friday released a first batch of secret files documenting reported sightings of unidentified flying ...