Live coverage: Atlas 5 countdown and launch journal

A solid-fueled Northrop Grumman Minotaur 4 rocket vaulted into orbit Wednesday from Virginia’s Eastern Shore and deployed four top secret spacecraft for the U.S. government’s spy satellite agency, extending the program’s success record ahead of three more Minotaur missions planned in 2021.

Astronauts Butch Wilmore and Terry Virts suited up and ventured outside the International Space Station on Sunday on their third spacewalk in eight days to install equipment to help future commercial crew capsules built by Boeing and SpaceX navigate to the complex.

United Launch Alliance engineers filled a Delta 4-Heavy rocket with super-cold liquid hydrogen and liquid oxygen propellants Friday at Cape Canaveral Air Force Station during a practice countdown before the heavy-lifter’s scheduled liftoff in June with a top secret U.S. government spy satellite.