Over 700 new cases were just found in the Pentagon’s UFO report, 21 of which the agency says it can’t explain.

The latest report from the Pentagon's UFO office has revealed hundreds of new sightings, including about two dozen "particularly interesting cases." However, there is still no proof of alien activity.

More than 700 UFO reports were made in the last year, according to a report published Thursday by the Pentagon and the Director of National Intelligence report.