Photos: Delta 4 lights up the sky for night owl launch

More than six years after back-to-back failures left the Taurus rocket with an uncertain future, a redesigned version of the launcher sporting a new name is set to loft 10 small Earth-imaging satellites into orbit Tuesday from Vandenberg Air Force Base in California.

SpaceX is likely to land the first stage of the Falcon 9 rocket set for launch April 30 on a drone ship just off the coast of Cape Canaveral, not at the company’s onshore recovery site as originally planned, after a ground test of the company’s Crew Dragon capsule at the landing pad ended in an explosion Saturday.

SpaceX’s first Falcon Heavy rocket is expected to roll out to pad 39A at NASA’s Kennedy Space Center for the first time next month for a hold-down firing of its 27 Merlin main engines, but the mega-rocket’s inaugural test launch will slip into January, officials confirmed Tuesday.