Key Points and Summary - NASA’s X-43A wasn’t a paper study—it was a 12-foot, hydrogen-fueled experimental jet that proved an air-breathing engine could fly at nearly ten times the speed of sound. -It ...

Key Points - NASA's X-43A hypersonic research vehicle, part of the "Hyper-X" program, still holds the world record for an air-breathing aircraft, achieving a speed of Mach 9.64 (6,363 mph) in its ...

Venus Aerospace has made the most efficient rocket engines ever flown. They will go from runway to mach 9 hypersonic speed. The Venus Aerospace Stargazer M4 is designed to reach a top speed of Mach 9, ...

Tom has a Master's degree in Journalism. His editorial work covers anything from archaeology and the environment to technology and culture. Tom has a Master's degree in Journalism. His editorial work ...

Humankind was once determined to break the sound barrier, as it was considered the ultimate achievement in speed. But our technology didn't stop there, as we've built experimental vehicles that can ...