Season 1 of NASA's Unexplained Files premiered on March 27, 2012.

Season 2 of NASA's Unexplained Files premiered on March 2, 2015.

Season 3 of NASA's Unexplained Files premiered on February 23, 2016.

Season 4 of NASA's Unexplained Files premiered on August 30, 2016.

Season 5 of NASA's Unexplained Files premiered on April 12, 2017.

Season 6 of NASA's Unexplained Files premiered on April 11, 2019.