Video: 4K video replay of SpaceX’s CRS-21 launch (members only)

Set to resume a brisk pace of launch activity after a nearly six-week respite, SpaceX test-fired its next Falcon 9 rocket Thursday at NASA’s Kennedy Space Center in Florida ahead of a planned liftoff Monday with several tons of experiments and supplies for the International Space Station.

SpaceX and United Launch Alliance have split up to $645 million in new contracts to deploy U.S. Air Force navigation and surveillance satellites into orbit from 2019 through 2021.

A recap of the successful start to Orbital ATK’s OA-7 resupply mission to the International Space Station is given in this post-launch news conference held at NASA’s Kennedy Space Center following the Atlas 5 rocket’s delivery of the Cygnus cargo ship into space.