On Wednesday, a new slate of witnesses provided fresh testimony to Congress on UFO sightings and what the government may (or may not) know about them.

Journalist Michael Shellenberger told the committee about information he received from a whistle-blower, an alleged special access program dubbed Immaculate Constellation, which scoops up all UFO or UAP photos, videos, and data from classified platforms and sensors. A document shared with the committee described one disturbing encounter.

There is renewed demand for more information on what the U.S. government knows about UFOs. Jo Horwood has more.

Congress is once again looking for answers about UFOs. The House Committee on Oversight and Accountability is holding its second hearing on unidentified anomalous phenomena, or UAPs, as they call them.