Time-lapse video: The Falcon Heavy goes vertical again

Boeing Co. and SpaceX, selected by NASA last month to carry astronauts to the International Space Station, can resume development of their human-rated spacecraft after officials ordered a work stoppage prompted by a protest by Sierra Nevada Corp., the company left out of the contracts.

Rocket Lab’s first full-up commercial launch is set for April 19, U.S. time, from the company’s privately-operated launch base in New Zealand with three U.S.-owned satellites to collect weather data.

SpaceX fueled its next Falcon 9 rocket at launch pad 39A and ignited the booster’s nine Merlin engines at sunset Thursday, passing a major step in the launch campaign leading up to liftoff of the Intelsat 35e communications satellite Sunday.