Starship is SpaceX’s fully reusable super-heavy launch system, built to carry large payloads and eventually people to orbit, the Moon, and Mars. It has two stages that both return for reuse: a first-stage booster called Super Heavy and an upper stage called Starship, or simply Ship. Stacked together, the vehicle stands roughly 120 meters tall, which makes it the largest and most powerful rocket ever flown.
SpaceX designed Starship around one idea. A rocket you can fly again and again should cost far less per flight than one you throw away. Every stage of an expendable rocket is lost after a single use. Starship aims to recover both stages intact, refuel them, and launch again, the way an airline reuses a plane across thousands of flights.
What Starship Is Made Of
Starship is built from stainless steel rather than the aluminum or carbon fiber used on most rockets. Steel is heavier, but it holds its strength at both the extreme cold of cryogenic propellant and the intense heat of reentry, and it costs a fraction of the alternatives. That choice keeps the airframe cheap and rugged, which matters for a vehicle meant to fly often instead of once.
Power comes from the Raptor engine, SpaceX’s methane-and-oxygen engine that runs on a full-flow staged combustion cycle. The Super Heavy booster carries around 33 Raptors at its base, and the Starship upper stage carries six. Those six split into sea-level engines and vacuum-optimized engines, and the vacuum versions use larger nozzles tuned for space, where they run more efficiently. For a plain-language walk through how these engines make thrust, see how rocket engines work.
How the Two Stages Work
The Super Heavy booster does the heavy lifting off the pad, then comes back to be caught. After it burns through most of its propellant, it separates, flips, and steers back toward the launch site. Instead of landing on legs, it flies into a pair of large arms on the launch tower that catch it in midair, a setup SpaceX nicknames the chopsticks. Catching the booster this way removes the weight of landing legs and lets the same tower refurbish and restack it faster.
The Starship upper stage carries the payload the rest of the way to orbit. On the way back down it reenters belly-first to bleed off speed, protected by a heat shield of ceramic tiles, then flips upright to land. This upper stage is the part that would carry cargo or crew to the Moon or Mars. Recovering it is the harder half of the plan, and the part still being proven.
What Starship Is For
Starship is being built to serve four jobs, each of which needs a large, low-cost ride to space.
- Starlink deployment. SpaceX launches its Starlink internet satellites in batches, and Starship’s wide payload bay can carry many more per flight than the Falcon 9 it uses today. The Falcon 9 explainer covers that current workhorse in detail.
- NASA’s Moon landings. NASA selected a version of Starship as the Human Landing System, or HLS, that will carry astronauts from lunar orbit down to the surface under its Artemis program. This lunar Starship drops the flaps and heat shield it does not need on the Moon.
- Mars. SpaceX’s stated long-term goal is to carry cargo and people to Mars, and Starship is the vehicle meant to do it. This is the most distant of its aims and the least certain on any timeline.
- Point-to-point transport. SpaceX has floated using Starship for very fast travel between two points on Earth, flying through space to cross an ocean in under an hour. That remains a concept rather than a service.
Where Starship Stands As of 2026
Starship is in flight testing as of 2026, which means SpaceX is launching prototypes to prove out each part of the system rather than flying paying missions. The program follows a build, fly, and learn approach: fly a vehicle, gather data from what works and what fails, change the hardware, then fly again. That style produces visible failures along the way. They are expected in this kind of testing, and the approach differs from how a program like NASA’s Space Launch System is built and flown.
Test flights have worked through booster catches, upper-stage control, and reentry heating, one capability at a time. The hardest remaining steps are reliable upper-stage recovery and the in-orbit refueling a Moon or Mars mission would need, because a single tank of propellant cannot reach those destinations. A tanker version would launch first, then transfer propellant to the crewed ship in orbit. Treat any specific flight number or date as something to confirm against SpaceX’s own flight updates, because the test schedule moves often.
Why Full Reuse Is the Hard Part
The single hardest problem Starship faces is bringing the upper stage home in one piece. A booster like Super Heavy separates before the rocket reaches orbital speed, so it comes back relatively slowly and never gets very hot. The Starship upper stage returns from orbit, hitting the atmosphere at many times that speed, and the friction heats its surface to temperatures that would melt bare steel.
Starship handles that heat with thousands of ceramic tiles on its windward side, the surface that faces the airflow during reentry. Each tile has to stay attached through the shaking of launch and the heating of return, and a gap where tiles come loose can let heat reach the steel underneath. This is the same class of problem the Space Shuttle wrestled with, and it is one of the main things SpaceX is testing on each flight. Getting a reusable heat shield that needs little work between flights is central to the low-cost promise, because a shield that must be rebuilt every time erases much of the savings.
The other hard step is refueling in orbit. A single load of propellant is enough to reach orbit but not enough to continue to the Moon or Mars. SpaceX plans to launch tanker versions of Starship that meet a crewed ship in orbit and transfer propellant to it, a process no one has done at this scale. Both problems, the heat shield and the refueling, are why Starship remains in testing while Falcon 9 already flies operational missions.
How Starship Compares to a Reusable Rocket Today
Falcon 9 already reuses its first-stage booster and lands it on a droneship or back at the launch site, so rocket reuse itself is not new. Starship pushes the idea further by trying to recover the upper stage as well, which no operational rocket does today. That full reuse creates both its promise and its difficulty.
| Feature | Falcon 9 | Starship |
|---|---|---|
| Stages reused | First stage only | Both stages, by design |
| Propellant | Kerosene and oxygen | Methane and oxygen |
| Upper-stage recovery | No, expended each flight | Yes, the design target |
| Status as of 2026 | Operational workhorse | In flight testing |
The mechanics of landing and reusing a booster apply to both vehicles, and how reusable rockets work walks through the landing, refurbishment, and cost math behind them. Starship raises the stakes on all three, since a stage that reenters from orbit takes far more heating than a booster that never reaches orbital speed.
To follow Starship’s progress, watch SpaceX’s own Starship flight updates and confirm any milestone there before treating it as done, since early reports of a test often miss what actually failed or succeeded.