http://www.newsweek.com/pentagon-likely-thinks-ufos-not-human-astrophysicist-says-ahead-report-1603421

It is "reasonable" to conclude that the U.S. government thinks some unidentified aerial phenomena (UAP) are not human-made, a Harvard astrophysicist has said.

This week, the U.S. government is expected to release a highly anticipated report into the existence of UAPs—essentially UFOs.