SpaceX (Space Exploration Technologies)
Author: Tianjiang Shuo
Source: SpaceX Official Website and public sources
Site: https://cislunarspace.cn
Company Overview
SpaceX (Space Exploration Technologies Corporation) was founded by Elon Musk in 2002, headquartered in Hawthorne, California. SpaceX is a global leader in commercial space, with reusable launch vehicle technology as its core competitive advantage, having fundamentally transformed the cost structure of global launch services. SpaceX operates the world's largest constellation of orbiting satellites — Starlink — and is developing the fully reusable Starship launch system, which will be the largest launch vehicle ever built by humanity. SpaceX plays an irreplaceable role in cislunar space transportation, lunar missions, and deep space exploration.
Space and Cislunar-Related Business
Starlink Constellation
Starlink is SpaceX's low Earth orbit (LEO) internet constellation and the world's largest satellite constellation:
- Scale: As of May 2025, the Starlink constellation has more than 8,460 satellites in orbit, with plans to eventually expand to approximately 12,000, and a final goal of 42,000 (FCC approved for 12,000).
- Cislunar Space Communications: Starlink V2 Mini satellites are equipped with laser inter-satellite links (ISL), enabling data relay in cislunar space, and theoretically have the potential to extend to cislunar space communications support.
- Earth Support: Starlink provides high-speed, low-latency internet services to ground users, demonstrating military communications support capabilities in the Russia-Ukraine conflict.
Falcon Launch Vehicle Family
SpaceX's Falcon rocket family is a main player in the current commercial launch market:
- Falcon 9: A reusable two-stage launch vehicle with an LEO capacity of approximately 22.8 tons and GTO capacity of approximately 8.3 tons; the first stage booster can be reused multiple times. Falcon 9's frequent launches have given SpaceX a dominant share of the global launch market.
- Falcon Heavy: Composed of three Falcon 9 first stages in parallel, with an LEO capacity of approximately 63.8 tons and GTO capacity of approximately 26.7 tons; it is one of the largest active launch vehicles in the world. Falcon Heavy has executed multiple national security and commercial missions.
Starship
Starship is SpaceX's next-generation fully reusable super-heavy launch system under development:
- Scale and Capacity: Starship stands approximately 121 meters tall, with the first-stage "Super Heavy" booster equipped with 33 Raptor engines; the Starship upper stage can deliver 100-150 tons of payload to LEO, with a capacity of approximately 100 tons in fully reusable mode.
- Lunar Missions: NASA has selected Starship as the Human Landing System (HLS) for the Artemis program, which will deliver astronauts from the Gateway (or directly) to the lunar surface in Artemis III and subsequent missions. In 2025, SpaceX designed a dedicated lunar Starship proposal for NASA's Artemis program, planning to use reusable Starship to improve lunar landing efficiency.
- Cislunar Space Transportation: Starship's nearly 100-ton LEO capacity and on-orbit refueling capability make it a core transportation tool for future cislunar space infrastructure construction, capable of delivering large modules and supplies to cislunar L1 or NRHO.
Crew Dragon
SpaceX's Crew Dragon is the primary crewed spacecraft for NASA's Commercial Crew Program (CCP):
- International Space Station Missions: Since 2020, Crew Dragon has executed multiple ISS crew transportation missions, delivering NASA astronauts to the International Space Station.
- Cislunar Space Potential: Crew Dragon's design can be extended to support farther deep space missions, making it a candidate for future commercial cislunar travel.
Major Products and Technologies
| Product/Technology | Type | Description |
|---|---|---|
| Starlink | Satellite Internet Constellation | Largest LEO broadband constellation, 8,460+ satellites in orbit |
| Starship | Launch Vehicle/Spacecraft | Fully reusable, 100-ton LEO capacity, lunar lander |
| Falcon 9 | Launch Vehicle | Reusable, 22.8-ton LEO capacity |
| Falcon Heavy | Launch Vehicle | Three boosters in parallel, 63.8-ton LEO capacity |
| Crew Dragon | Crewed Spacecraft | Commercial crew, LEO missions |
| Raptor Engine | Liquid Oxygen-Methane Engine | Starship propulsion system, full-flow staged combustion cycle |
Connection to Cislunar Space Missions
SpaceX is one of the most direct drivers of cislunar space economic development:
- Revolution in Transportation Costs: Reusable Falcon 9 and the upcoming Starship have reduced cislunar space cargo transportation costs by more than an order of magnitude, making large-scale cislunar space infrastructure construction economically viable.
- Core Artemis Contractor: As the HLS lunar lander supplier, SpaceX is a key element of NASA's crewed return-to-Moon program; Starship's maturity directly determines the Artemis implementation schedule.
- Communications Infrastructure: Starlink constellation's laser inter-satellite link technology has validated the feasibility of space-based communications networks, which can be extended to become a cislunar space communications backbone.
- On-Orbit Services Front: SpaceX is accumulating on-orbit satellite operations and maintenance experience through Starlink, which can be translated into engineering capabilities for on-orbit services.
Related Terms
- Artemis Program: /en/research-frontiers/directions/security-governance/orbital-game/artemis/
- Near-Rectilinear Halo Orbit: /en/glossary/orbits/nrho/
- Distant Retrograde Orbit: /en/glossary/orbits/dro/
References
- SpaceX Official Website: https://www.spacex.com
- NASA Artemis, "SpaceX Starship HLS contract", 2021.
- FCC, "Starlink Gen 2 approval order", 2022.
- SpaceX Starship Launch Updates, 2024-2025.