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

Watch a 4K video replay of the first Falcon Heavy launch as viewed from the Kennedy Space Center Press Site around 3 miles from pad 39A.

NASA Administrator Bill Nelson is set to discuss the agency’s decision following a rare mid-mission, agency-level flight readiness review. A press conference will begin no earlier than an hour following the conclusion of the discussion.

SpaceX hopes to launch Falcon 9 rockets from its two launch pads in Florida and its one in California on Saturday night. Liftoff of the Eutelsat 36D satellite from NASA’s Kennedy Space Center happened at 5:52 p.m. EDT (2152 UTC), the opening of a nearly four-hour window.