Summary: Space exploration has long fascinated humans, from the fantasy of the ancient Greeks to the moon landings of the last century. It's about pushing into new frontiers -- and not just technological ones. In the last part of our series, "Hidden Histories," we learn about Ed Dwight, a trailblazing Air Force pilot who helped pave the way for NASA's Black astronauts. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders
