The U.S. Navy has developed a directed-energy weapon that can intercept unmanned drones and possibly cruise missiles while ...

The undated image shows the U.S. Navy testing a weapon system known as HELIOS from the USS Preble destroyer in the middle of the ocean.

While Mueller helped SpaceX cut down the costs of satellite launches with the Merlin engine and Falcon 9, Impulse Space hopes Helios will do the same with satellite launches to higher ...