Q&A with Keith Gendreau, principal investigator of the first X-ray space communications experiment (members only)

Watch a replay of the pre-launch news conference for the SpaceX CRS-10 space station resupply mission is held at the Kennedy Space Center Press Site on February 17, 2017.

SpaceX’s Falcon 9 rocket is set for liftoff from Cape Canaveral on Tuesday, heading due east over the Atlantic Ocean to deliver the South Korean Anasis 2 military communications satellite into orbit around 32 minutes later.

A Falcon 9 rocket lifted off from Vandenberg Air Force Base at 4:39 a.m. PDT (7:39 a.m. EDT; 1139 GMT) Wednesday, and SpaceX successfully landed the rocket’s first stage on a drone ship in the Pacific Ocean. The mission’s primary objective is the deployment of 10 Iridium Next communications satellites into low Earth orbit.