The U.S. government has received more than 700 reports of unexplained phenomena but have found no proof of extraterrestrial life, the Pentagon’s UFO office confirmed at a Thursday briefing.

The Pentagon office investigating reports of unidentified anomalous phenomena, the government's term for UFOs, received 21 reports last year that contain enough data for the intelligence community to continue actively investigating.

A new report from the Pentagon has revealed hundreds of new reports of unidentified aircraft and aerial phenomena, but no indications of extraterrestrial life.