SpaceX is heading into a critical moment: just weeks before investors expect the company’s long-awaited initial public offering, the firm is preparing to fly a heavily redesigned version of its Starship megarocket. How that test goes could influence investor sentiment and the company’s near-term financial trajectory.
The version set to fly includes dozens of new Raptor 3 engines and a novel fuel system in the Super Heavy booster, along with upgraded avionics and onboard hardware. The flight will carry satellites and experimental plumbing and ports meant to prove technologies for in-orbit refueling — a capability SpaceX says will be essential for missions to the Moon, Mars and other deep-space destinations.
Financially, Starship’s success matters more than ever. Documents filed this week tied to SpaceX’s IPO process make clear the company is spending heavily to finish Starship. Development costs have eaten into launch profits: the company reported a $662 million operating loss in its launch business for the first quarter of this year. SpaceX spent just over $3 billion on Starship development in 2025 and another $930 million in the first quarter of 2026.
Investors expect a very large offering. Analysts have suggested SpaceX could raise as much as $75 billion and receive a valuation up to about $1.5 trillion — numbers that would put the IPO among the biggest in history. But PitchBook researchers and other analysts warn that a setback on Starship could dampen IPO enthusiasm noticeably. Even though test flights are, by definition, experimental and prone to failure, the timing makes this particular launch especially consequential.
Starship is unlike any rocket currently flying. The full system stands roughly 400 feet tall and is built largely from stainless steel. The spacecraft sits on an enormous Super Heavy booster powered by dozens of Raptor engines; after stage separation the upper Ship ignites its own engines to reach orbit while the booster is designed to return and attempt a propulsive landing back at the launch site. Elon Musk has framed rapid, full reusability — ideally with a booster that returns to the pad quickly — as the way to dramatically reduce cost per launch.
SpaceX intends Starship to carry much larger payloads than its existing Falcon 9 and Falcon Heavy vehicles. Starship is expected to enable larger Starlink satellites and greater mass to orbit for commercial customers, serve as the lunar lander for NASA’s Artemis program, and ultimately support missions to Mars. Musk has also floated more speculative ideas, including the possibility of launching space-based data centers that would use solar power to run high-performance computing for artificial intelligence workloads.
Past flights underline both the promise and the risk. The first full-stack Starship launch in April 2023 failed when the vehicle did not separate properly from its booster and was lost. Subsequent development has been iterative: multiple attempts and redesigns followed, with varying results. The second major vehicle faced repeated problems through 2025 before later flights finished as planned. The new configuration is a significant redesign intended to address earlier weaknesses.
Observers who track the program closely say the latest hardware looks more refined. Independent engineer and longtime observer Scott Manley notes improvements in thermal protection placement, structural finishes and the removal or integration of temporary fixes that appeared in earlier versions. He and others are particularly focused on the Raptor 3 engines: they deliver higher thrust, have internal design changes meant to remove the need for heavy shielding under the engines, and have been extensively ground-tested — but they have not yet flown in an orbital mission. How those engines behave under real flight conditions remains an open question.
Even a successful single flight won’t resolve all business and technical challenges. Key capabilities still unproven include the durability of Starship’s heat shield through repeated reentries and the ability of the vehicle to perform a controlled landing back at the Texas pad. Integrating dozens of engines, achieving reliable stage recovery, validating in-orbit refueling hardware and scaling up to rapid launch cadence are complex engineering and operational tasks that remain to be demonstrated.
Skeptics caution that much of SpaceX’s lofty valuation hinges on delivering those harder problems at scale. Telecommunications analyst Tim Farrar says Starship is a “multidimensional problem” and that investors have to believe in a future in which the rocket achieves high cadence, true reusability and the payload economies Musk promises before assigning valuations in the trillions.
For now, SpaceX’s next Starship flight is both an engineering test and a market signal. Investors, customers and space enthusiasts will be watching not only for whether the rocket clears the pad and reaches its mission milestones, but for clues about how close the system is to the routine, low-cost launch model that SpaceX has long promised. Tests can fail and teams often iterate successfully, but with billions already spent and an IPO on the horizon, the stakes for Starship have never been higher.