Atlas 2AS rocket puts TV satellite in space

SpaceX launched two Falcon 9 rockets in a span of a little more than four hours Friday, a record-setting day that began with the launch of 52 Starlink internet satellites from California and ended with the sunset liftoff of two SES television broadcast payloads from Florida.

Here’s a look by the numbers of the previous Atlas 5 and Delta 4 flight histories and the manifests for both rockets.

When the first Delta 2 rocket took off on Valentine’s Day 1989, ideas like navigating by smartphone and driving robots on Mars were science fiction. More than 150 launches over the last 30 years helped change all that.