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

Watch the NASA Television live coverage of Saturday’s predawn Falcon 9 launch that delivered the Dragon spacecraft into orbit.

A SpaceX Falcon 9 rocket boosted by a recycled first stage fired into the skies over the Kennedy Space Center in Florida on Nov. 15, and these photos show the start of the 229-foot-tall launcher’s journey into orbit.

SpaceX launch crews rolled out the company’s next Falcon 9 rocket to pad 39A at the Kennedy Space Center in Florida, then lifted the two-stage launcher vertical for a hold-down engine firing Thursday in preparation for launch next week with a South Korean-owned commercial communications satellite.