NASA’s Jet Propulsion Lab celebrated another milestone on Halloween ... in the San Gabriel Mountain foothills to launch a liquid rocket engine, which few had attempted at that point in time.

A Rocket Lab Electron lifts off June 4 (U.S. time ... low-cost smallsat or balloon missions with a cost cap of $20 million. NASA picked four with the expectation that some would run into problems ...

Its gimmick: it will start at 100,000 ft. from a balloon. Battling Air. When rockets are fired from the earth’s surface, they cannot start fast. If they move too fast too soon, the dense ...