Photos: Most powerful Atlas 5 puts 15,000-pound satellite in orbit

Construction crews at Cape Canaveral’s Complex 40 launch pad are busily repairing and upgrading the facility after a SpaceX Falcon 9 rocket exploded there last year, with the pad’s return to service scheduled before the end of the summer, clearing the way for final preparations for the triple-core Falcon Heavy’s maiden flight late this year.

Orbital ATK’s seventh Antares rocket stands ready for launch with a Cygnus supply ship Saturday on a two-day flight to the International Space Station.

An unexpected reading from a ground sensor prompted SpaceX to scrub the planned launch of a Falcon 9 rocket Thursday with 60 more Starlink broadband satellites. It was the second last-minute abort of a rocket launch on Florida’s Space Coast in less than 10 hours, following a hold Wednesday night just before engines ignited on a United Launch Alliance Delta 4-Heavy rocket.