... a UFO researcher claims that an incident off the shores of Anglesey could be the best evidence yet of an infamous North Wales close encounter.

Earth could be getting a second sun, at least temporarily.

A New York witness drove within 600 feet of a bright light UFO that was hovering 200 to 300 feet in altitude at 7:35 p.m. on November 18, 2010...

The Hubble Space Telescope got its first peek at a mysterious giant green blob in outer space and found that it's strangely alive.

A Virginia man says he is not convinced the unidentified blue object he photographed in the sky was a remote-controlled glider plane.

The National UFO ALERT Rating System has been updated with Alabama, California, Pennsylvania, Florida, Michigan and New York

An Arizona witness reports an encounter on a lonely desert road with a red orb as close as six feet just west of Congress after midnight on May 19, 2010...

Astronomers have discovered their "holy grail" - a planet capable of supporting life outside our solar system.

This 2012 Memorial Day Weekend, join the hosts of The Black Vault Radio Network’s, Reality, Checked, in a weekend nation-wide UFO sky watch. If there is something meant for us to see – let’s find it!

You couldn’t ask for a better textbook case of a cover-up. It happened just weeks ago, and adds to one of the biggest pieces of the puzzle to solving the UFO mystery.

What created this unusual hole in Mars?

Agent Mulder of "The X-Files" fame wasn't a speaker at Sunday's Paranormal Symposium at the University of Nebraska at Omaha.

Two Florida witnesses watched four "glowing orange spheres" move slowly from west to east that were followed by a "bright, cigar or cylinder-shaped object moving to the east" on December 22, 2010.

A Knoxville, Tennessee, witness followed and shot video of a low-flying and sometimes hovering triangle-shaped UFO while driving near Hardin Valley Elementary School...