What Is SpaceX Falcon 9 Used For? Missions Explained
One Falcon 9 booster has flown to space 37 times. Since its first launch in June 2021, it has carried NASA astronauts, a space station cargo ship and more than two dozen batches of Starlink satellites. So what is SpaceX Falcon 9 used for, and how does a single rocket stage earn that many flights?
In short, it launches almost everything SpaceX and its customers want in orbit: Starlink satellites, crews and cargo for the International Space Station, and satellites for governments and private companies. The first stage lands after each launch and flies again, which is why booster B1067 reached a record 37th flight on August 25, 2026
Starlink Takes the Biggest Share of Launches
Most Falcon 9 flights now carry SpaceX’s own satellites. The July 14, 2026 Starlink launches placed 56 satellites in orbit across two missions and brought the active constellation to 10,839 satellites, according to tracker Jonathan McDowell. That same night, SpaceX reached 83 Falcon 9 missions for the year. Each mission carries a batch of 27 to 29 satellites.
Because SpaceX is its own best customer, it fills gaps in the schedule with Starlink. That keeps boosters flying between outside customers. It also explains why B1067 has flown more than two dozen Starlink missions. Regular, similar flights are how a booster piles up dozens of reuses.
Falcon 9 Carries Astronauts to the ISS
Falcon 9 also launches Crew Dragon, the capsule that sits on top of the rocket and can pull away from it in an emergency. In May 2020, the Demo-2 mission became the first crewed orbital launch from US soil since the Space Shuttle retired in 2011. NASA has relied on it for station crew rotations ever since.
B1067 shows how routine this became. It flew NASA’s Crew-3 in November 2021 and Crew-4 in April 2022, then moved on to Starlink missions.
Private flights followed. Inspiration in 2021 carried the first all-civilian crew to orbit. Axiom’s Ax-1 flew in 2022, and Polaris Dawn in 2024 included the first commercial spacewalk.
Cargo and Science Missions
Falcon 9 also launches the Dragon cargo ships that resupply the space station. B1067 made its debut in June 2021 on CRS-22, a Dragon cargo run to the International Space Station. Dragons can also bring research samples back to Earth, so experiments go up, and results come home.
The rocket has launched science missions too. NASA’s DART spacecraft left on a Falcon 9 in November 2021 and deliberately struck the asteroid Dimorphos in September 2022. It was the first real test of deflecting an asteroid.
Commercial Satellites and Rideshare Flights
Customers who want a cheaper ride can book space on a Falcon 9 rideshare mission. The Transporter-1 flight in January 2021 deployed 143 satellites at once, a record at the time. Universities, startups and Earth-imaging companies use these flights to reach orbit without paying for a whole rocket.
Larger commercial satellites, including communications satellites bound for higher orbits, also fly on Falcon 9. So do missions for US government agencies, such as navigation satellites for the Space Force.
What Happens During a Falcon 9 Launch
The first stage does the early work. It lifts the rocket off the pad, then separates and hands the payload to the second stage, which continues to orbit. The first stage turns around and heads back to Earth.
On July 9, 2026, B1067 landed on the droneship A Shortfall of Gravitas roughly eight minutes after liftoff. That was the 635th successful Falcon 9 booster landing overall. Some missions land back on a pad near the launch site instead, and SpaceX also recovers the fairings that protect the payload.
Why Reuse Made All of This Possible
The first landing of a Falcon 9 first stage came in December 2015. In March 2017, a recovered booster flew again for the first time, carrying the SES-10 satellite.
Early on, engineers expected each booster to last around 10 flights. Block 5 boosters were originally certified for 10 flights, a target SpaceX has since raised repeatedly. The company said in a 2026 filing that the booster has been engineered and demonstrated to handle up to 40 flights.
The practical effect shows up in the numbers. SpaceX reported 165 Falcon 9 launches in 2025, 157 of them on flight-proven boosters.
How Reliable Is the Falcon 9?
As of March 31, 2026, SpaceX reported approximately 620 Falcon 9 orbital launches, more than 570 successful booster landings, and a mission-success rate above 99%. Those figures come from the company’s own prospectus, so they describe SpaceX’s reporting rather than an independent audit.
That record matters to customers. NASA puts astronauts on this rocket, and commercial operators insure satellites worth hundreds of millions of dollars on it. A track record that long lets them price in very little launch risk.
What Falcon 9 Cannot Do?
Falcon 9 is not fully reusable. The second stage is thrown away on every flight, so reuse does not make launches thirty-odd times cheaper. It does make them far cheaper than expendable rockets.
The rocket also has size limits. Very heavy payloads need a bigger vehicle, which is where Starship comes in. As of September 2026, Starship has flown 14 test flights and reused two Super Heavy boosters. It is not yet carrying payloads on a regular schedule.
Conclusion
Falcon 9 is the workhorse of modern spaceflight. It launches Starlink satellites by the dozen, carries NASA and private crews to the space station, resupplies the station, and gives small satellite companies an affordable route to orbit. That is what Falcon 9 is used for in practice, and it explains why so many different customers depend on one rocket.
Its edge comes from reuse and reliability working together. Boosters now fly dozens of times, and launches happen at a pace no competitor matches today. Until Starship starts carrying payloads regularly, Falcon 9 remains the rocket most of the world’s launches run on.