The US Navy successfully tested a booster rocket motor to launch a hypersonic vehicle on Thursday. The test comes a week after China stunned the world with the launch of its hypersonic missile.A "static firing" of the hypersonic rocket booster motor was conducted in Promontory, Utah, according to a Navy statement.The US Navy "successfully conducted a second test of the First Stage Solid Rocket Motor (SRM) on October 28, 2021, in Promontory, Utah, as part of the development of the Navy's Conventional Prompt Strike (CPS) offensive hypersonic strike capability and the Army's Long Range Hypersonic Weapon (LRHW).""Today's successful test brings...