On Saturday, SpaceX’s Starship spacecraft successfully returned to the Texas launch tower from which it was launched the previous day, marking the longest orbital flight to date for the vehicle. This achievement signifies a significant recovery milestone in the company’s ongoing ten-year mission to create a fully reusable rocket system.
The Super Heavy booster, which forms the lower section of the towering two-stage rocket, propelled Starship into space on Friday from SpaceX’s Starbase facilities in Texas. However, the booster failed to make it back to the launch pad approximately ten minutes after liftoff due to a navigation malfunction, thwarting SpaceX’s initial plan to recover both rocket components simultaneously.
Nonetheless, the successful return of the Starship upper stage, after completing 14 orbits around Earth over a span of more than 22 hours, represents a crucial engineering triumph in the rapid, multibillion-dollar development of Starship. Billionaire Elon Musk envisions this rocket as the future backbone of SpaceX’s satellite operations and its aspirations for human missions to the moon and eventually Mars.
After deploying 26 Starlink satellites into orbit on Friday night while at an altitude of about 260 kilometers, Starship ignited one of its engines on Saturday to initiate its descent through the atmosphere. It endured extreme temperatures as its orbital speed of approximately 27,000 kilometers per hour transitioned to a supersonic free-fall above SpaceX’s Gulf Coast facilities in south Texas.
The spacecraft then reignited three engines to orient itself vertically and navigate towards the launch tower, where two mechanical “chopstick” arms secured the spacecraft as it hovered in position.
SpaceX’s leading position in the global launch market has primarily relied on its Falcon 9 rocket, which has conducted over 700 launches since 2010. While the first stage of that rocket is reusable, the second stage, responsible for placing payloads into orbit, is discarded into the ocean after each mission.
With the Starship project, Musk aims to create a rocket system capable of traveling to space and returning in a manner similar to commercial airliners.
While the recovery of Starship on Saturday is a significant step forward, SpaceX has yet to recover both stages of the Starship in a single mission. Furthermore, the heat shield of Starship, made up of black hexagonal tiles designed to withstand the intense heat of re-entry, is not yet fully reusable.
SpaceX is actively working on developing new tile designs that will need minimal or no refurbishment after each flight.
NASA’s Space Shuttle system, which transported astronauts to the International Space Station before its retirement in 2011, was partially reusable; however, the booster stages that propelled it into space were discarded after every flight, and the reusable spacecraft required extensive refurbishment before being launched again.
