How often does the world’s greatest ever rocket sit ready fueled, engines prepared, to be stopped by a cloud? On Monday evening in South Texas, SpaceX’s behemoth Starship more than 400 feet from the ground to the nose cone was seconds from liftoff when anvil clouds rolled over the Gulf Coast, promising lightning strikes. The launch director’s abort call was made with less than one minute remaining on the countdown clock, the second scrub in two days on the vehicle’s 10th major test flight.
The flight was to depart from SpaceX’s Starbase complex, a huge industrial facility that has grown into a company-dominated municipality. Starship’s two-stage configuration the 232-foot Super Heavy booster and 171-foot upper stage stood stacked and ready, an aggregate stainless steel-methan-oxygen propellant mass destined for total reusability. Each stage features Raptor engines, methane-fueled full-flow staged combustion powerplants with the capability to produce in excess of 16 million pounds of thrust at launch, a figure unmatched in aerospace history.
Sunday’s first attempt had already been derailed by a “ground side liquid oxygen leak” in the quick disconnect system, the connection that feeds cryogenic propellants into the rocket’s tanks. Teams labored through the night to fix the issue, which was comprised of parts critical to liquid oxygen and liquid methane transfer. The fix set the stage for Monday’s countdown until weather forecasting systems alerted the anvil cloud formation. These huge cumulonimbus residues, with the electrically charged heads, are a well-known hazard in space flight. NASA and the United States Space Force maintain strict launch commit criteria to avoid causing lightning by a rocket exhaust plume, a process that has disabled vehicles during prior flights.
The objectives of Flight 10 were ambitious but incremental. The Super Heavy booster, tail number B16, was to make a controlled landing in the Gulf of Mexico about 6.5 minutes after takeoff, burning two out of three center Raptor engines and one in its central ring. This off-nominal landing path was to test redundancy to show that the booster could still be recovered in the event of a main engine failure. The second flight, Ship 37, would have attempted a suborbital launch, launching mock Starlink satellites, reinitiating a Raptor in space, and splashing down in the Indian Ocean roughly an hour later. The test would also have tested new steering flaps and a reinforced heat shield, both needed to survive high-energy atmospheric reentry.
The stakes were heightened by a string of explosive mishaps earlier in the year. Flights 7 and 8 broke apart in flight within 10 minutes of its launch, and Flight 9 broke apart on reentry. In June, a test stand exploded at Massey’s plant that scattered debris north of Mexico, which was attributed to a composite overwrapped pressure vessel failure in the environmental control system. Each setback has underscored the technical maturity of Starship’s design, with increased thrust levels, more aggressive thermal protection, and rapid turnaround capability compared to previous SpaceX vehicles.
Delays caused by weather are an unavoidable reality of launch business, but they carry particular importance to a program that must maintain very tight schedules. NASA hired Starship as the initial crewed lunar lander for Artemis with a goal to do so by 2027. Elon Musk has pledged publicly to launch Starship to Mars in 2026 with a Tesla humanoid robot onboard, followed by crewed flights in 2029. “We want to be a multi-planet species to extend consciousness beyond Earth,” Musk said during the livestream, adding, “A future where we’re a space-faring civilisation is infinitely more exciting than one where we are not.”
Aside from exploration, Starship performance is contingent on the rollout of SpaceX’s Starlink broadband network. The payload capacity of the rocket would enable the deployment of far greater satellite batches than for the Falcon 9, reducing per-unit deployment costs. Musk has estimated that in a decade, Starship might launch more than 24 times in one day, a pace requiring unprecedented vehicle and ground infrastructure reliability.
For now, Flight 10 remains on the ground, its gear motionless but its schedule in the lap of meteorology. The second attempt, planned provisionally for Tuesday evening, will again be subject to the interplay between engineering readiness and the recalcitrant physics of the air.
