written by Chris Bergin July 19, 2021 Following a rigorous test campaign with the Starship prototype vehicles, SpaceX has turned its immediate attention to the booster that will loft its interplanetary spacecraft to new heights. Booster 3, the first prototype Super Heavy to roll to the launch site, conducted a three-engine Static Fire test on Monday. The testing at the suborbital site will clear the path for Booster 4 – already being stacked in the High Bay – to take up residence at the Orbital Launch Site (OLS), an area that continues to undergo preparations, including the installation of the final section of the Launch Integration Tower. Booster 3: Following a July 1 rollout down Highway 4 for installation on suborbital Pad A , Super Heavy’s pad flow has already included all the preparations required ahead of a Static Fire test. This ranged from an ambient proof test with nitrogen gas on July 8 ahead of cryoproofing with LN2 on July 12. The latter provided some stun...