Video: Falcon 9 fires up engines for static fire test (members only)

A NASA instrument built to help astronomers learn about the structure and behavior of neutron stars, super-dense stellar skeletons left behind by massive explosions, has been mounted to an observation post outside the International Space Station after delivery aboard a SpaceX supply ship earlier this month.

Ground crews transferred an Antares rocket out of an assembly building to a launch pad on Virginia’s Eastern Shore in a major step before liftoff on Orbital Sciences’ third flight to resupply the International Space Station.

Breaking a SpaceX record for the shortest span between two missions from the same launch pad, a Falcon 9 rocket lifted off Saturday from Cape Canaveral carrying 58 more Starlink broadband satellites and three Earth-imaging spacecraft for Planet.