Photos: Spectacular start to Delta 4-Heavy’s satellite deployment mission

Two key pieces of hardware needed for NASA’s next Mars rover — an Atlas rocket booster and sterile components of the rover’s sample collection system — recently arrived at Cape Canaveral ahead of the mission’s scheduled launch July 17.

More than three weeks after a faulty electrical component halted a countdown moments before liftoff, an Ariane 5 rocket lifted off from French Guiana on Friday with two commercial communications satellites. Launch occurred at 2156 GMT (5:56 p.m. EDT).

SpaceX founder and chief executive Elon Musk said Thursday that the company’s recovery fleet in the Atlantic Ocean recovered the two halves of the Falcon Heavy’s payload shroud after the heavy-lifter’s second launch from the Kennedy Space Center. Musk said the company plans to reuse the fairing for the first time later this year.