A tiny U.S. space startup relying on a first-of-its-kind propulsion system—fueled by water and microwaves—aspires to do for small satellites what Elon Musk’s SpaceX has done for larger ones: Make it easier and cheaper to reach orbit. Founded by a Russian immigrant and relying on a cadre of U.S. technical experts, the Silicon Valley company called Momentus says it has devised a way to inexpensively propel small satellites into more useful orbits than those they often reach via standard rocket launches. That stands to make them...

Source: Wall Street Journal February 03, 2019 15:56 UTC