Snapshots from Atlas 5 launch

One of the two Falcon 9 rockets SpaceX planned to take off in a span of less than five hours earlier this week will remain grounded indefinitely, preventing Cape Canaveral from hosting two launches on the same day for the first time in decades. But the military-run Eastern Range was ready for the back-to-back missions, and probably won’t have to wait long for the next chance for a launch doubleheader.

NASA’s InSight Mars lander will be buttoned up for launch in the coming weeks at Vandenberg Air Force Base in California, in preparation for its hoisting atop an Atlas 5 rocket for blastoff in the predawn hours of May 5.

A three-minute test flight Tuesday morning over Cape Canaveral will help ensure NASA’s Orion crew capsule — the vehicle being built to carry astronauts back to the moon — can safely escape from a catastrophic failure on launch.