Boom Supersonic announced that it could fly faster than the speed of sound without a sonic boom. Elon Musk backed the CEO's calls for regulatory changes to allow supersonic flights over land. A change ...

Today, many military aircraft can break the sound barrier to enter supersonic flight. Certain commercial models can as well, including the Concorde, which is famous for its record-breaking flights. As ...

It was a step toward reviving supersonic commercial travel, which has been on hiatus since the Concorde jet was grounded more than two decades ago. Boom Supersonic has contracts with at least two ...