Time-lapse video: The Falcon Heavy goes vertical again

A Falcon 9 rocket is moved into the position for a static test firing of its nine Merlin 1D engines. This time lapse video runs at 20 times normal speed.

SpaceX successfully launched a Falcon 9 rocket Sunday at 7:21 p.m. PDT (10:21 p.m. EDT; 0221 GMT Monday) with SAOCOM 1A, a radar observation satellite for Argentina, then returned the booster to a landing at Vandenberg Air Force Base, California, for the first time.

Spaceflight Now’s Stephen Clark reports from Starbase in South Texas as SpaceX prepares the largest rocket in history for a second launch attempt after calling off a launch attempt Monday due to a valve problem.