SpaceX continues to prep its Starship Mars rocket for its first-ever orbital test flight, which could be coming soon.
The static fire occurred at 2:42 p.m. EST (1942 GMT) and lasted for 13 seconds. Video captured by NASASpaceFlight and Rocket Ranch Boca Chica showed the test to be a powerful one, suggesting it involved a healthy proportion of Booster 7's 33 Raptors. That turned out to be the case; shortly after the test, SpaceX confirmed via Twitter that Booster 7 lit up 11 of its engines.
Wednesday's test was the first static fire for Booster 7 since Nov. 14, when the huge vehicle lit up 14 Raptors.
Shortly after that trial, SpaceX founder and CEO Elon Musk said that the company planned to perform just one or two more static fires with Booster 7 before launching an orbital test flight — the first ever for the Starship program.
That orbital mission will likely employ Booster 7 and Ship 24, a prototype of Starship's 165-foot-tall (50 meters) upper stage. The upper stage is powered by six Raptors; Ship 24 has already ignited all of its engines, during a Sept. 8 static fire.
A successful orbital flight will make Starship the most powerful rocket ever to fly. That title is currently held by NASA's Space Launch System megarocket, which debuted on Nov. 16, kicking off the agency's Artemis 1 mission.
SpaceX is developing Starship to take people and cargo to the moon and Mars. NASA is already a customer; the agency selected the huge vehicle to make at least two crewed moon landings for its Artemis program, which aims to establish a long-term human presence on and around the moon by the end of the 2020s.
Editor's note: This story was updated at 4:35 p.m. EST to state that SpaceX confirmed that 11 Raptors were involved in the static fire.
Mike Wall is the author of "Out There" (Grand Central Publishing, 2018; illustrated by Karl Tate), a book about the search for alien life. Follow him on Twitter @michaeldwall. Follow us on Twitter @Spacedotcom or on Facebook.