Snapshots from Atlas 5 launch

The launch of a United Launch Alliance Delta 4-Heavy rocket from Cape Canaveral was aborted three seconds before a planned liftoff at 3:28 a.m. EDT (0728 GMT). The rocket was set to loft a classified payload for the National Reconnaissance Office, the U.S. government’s spy satellite agency.

NASA’s InSight lander will fly from the outer edge of the Martian atmosphere at a speed of more than 12,000 mph to a controlled descent rate of 5 mph just above the red planet’s surface in less than seven minutes.

NASA’s Mars 2020 Perseverance mission resumed normal operations Friday after cold temperatures forced the spacecraft into space mode soon after a successful launch from Cape Canaveral.