NASA and SpaceX made another attempt on Friday to send a crew up to the International Space Station (ISS) and begin the return of a pair of astronauts.

That was before NASA and SpaceX, which jointly operate Crew-10, called off the launch because of an issue with the launchpad’s ground system. Butch Wilmore and Suni Williams, the pair of NASA astronauts who in June flew to the station on the maiden crewed voyage of the Starliner,