SpaceX conducts successful test-firing of Falcon Heavy rocket at Kennedy Space Center.

SpaceX is preparing for its sixth Falcon Heavy launch, set for April 18, which will send Viasat's new broadband satellite into geostationary orbit. The mission will require disposal of all three of the rocket's reusable boosters. The Falcon Heavy rocket's two side boosters will fire at full power for two-and-a-half minutes, then jettison to fall into the Atlantic Ocean a few hundred miles east of Cape Canaveral. The core stage will then throttle up to full power and burn for about a minute-and-a-half longer, then separate for its own destructive plunge into the sea.