Q&A with Bruce Banerdt, principal investigator on NASA’s InSight mission (members only)

A billion-dollar missile warning satellite built by Lockheed Martin for the U.S. Space Force arrived at Cape Canaveral earlier this month to kick off final preparations for launch May 17 aboard a United Launch Alliance Atlas 5 rocket.

The countdown for a planned launch of a SpaceX Falcon 9 rocket from NASA’s Kennedy Space Center in Florida automatically aborted in the last second before liftoff Sunday after an on-board computer detected unexpected data during an engine power check.

A SpaceX Falcon 9 rocket lifted off Tuesday with five communications satellites for Iridium’s commercial voice, data relay, and tracking network, and a pair of U.S.-German research craft to probe Earth’s climate and water cycle. Launch from Vandenberg Air Force Base, California, occurred at 12:47 p.m. PDT (3:47 p.m. EDT; 1947 GMT).