Video: Do you believe we need to go to Mars?
It’s exploration. Great civilizations explore.
.. Lockheed’s Falcon Hypersonic Technology Vehicle 2 is being designed to zip through the sky at Mach 20 (about 13,000 miles per hour), flying between New York and Los Angeles in 12 minutes. Boeing’s X-51A WaveRider, which relied on its own shock waves for compression lift, reached Mach 5.1 in 2013.