National Interest on MSN16h
The U.S. Air Force Went to Space on the North American X-15
The X-15 is the only conventional aircraft that has ever been flown above the “Karman Line” separating the Earth’s atmosphere ...
Space.com21d
Space Mountain at 50: Five nods to NASA from the Walt Disney World ride
"Blast off on a rip-roaring rocket into the furthest reaches ... construction on Space Mountain did not begin until Dec. 15, 1972, just as the last Apollo astronauts to walk on the moon were ...