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

The first operational flight of SpaceX’s Crew Dragon spacecraft with four astronauts aboard is set to launch from the Kennedy Space Center in Florida no earlier than Oct. 23, following a formal certification review to assess data from the Crew Dragon’s two-man test flight that concluded earlier this month, NASA said Friday.

The Falcon Heavy engine test firing at launch pad 39A seen in 4K high resolution video. The engines fired at 12:30pm EST (1730 GMT) on 24 January 2018 as part of a crucial pre-launch test.

The launch of SpaceX’s Falcon 9 rocket occurred less than three hours after the planned Falcon Heavy launch. Liftoff of the Starlink 6-36 mission happened at 11:01 p.m. EST (0401 UTC).