Seven down. Three to go. Boom Supersonic—the developer of a 64-to-80-passenger commercial airliner that flies faster than the speed of sound—last week set speed and altitude records with its XB-1 test ...
A 'spaceplane' that flies 25 times faster than the speed of sound has successfully passed a crucial testing milestone. The hypersonic plane is so fast it could jet from London to New York in less than ...
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