SpaceX is setting up to launch Inmarsat-5 Flight 4, a mission that will put a communications satellite into geostationary orbit for commercial satellite operator Inmarsat. SpaceX’s window lasts 49 minutes, and opens at 7:21 PM ET (4:21 PM PT) on Tuesday, with another window opening at the same time tomorrow in case of any issues resulting in a scrub. The launch payload is the fourth… Read More on Tech Crunch