Orion is NASA's deep space crew capsule, built to keep four astronauts alive for weeks beyond low Earth orbit and to survive reentry at lunar-return speeds of 25,000 mph. The Space Launch System (SLS) is the rocket that throws it moonward: the most powerful rocket NASA has ever flown, producing 8.8 million pounds of thrust at liftoff.
The pair flew together for the first time on Artemis I in 2022, sending an uncrewed Orion 40,000 miles past the Moon and back. Orion's European-built service module supplies power and propulsion, making it NASA's most international crew vehicle.
No other spacecraft flying today is rated to carry humans beyond Earth orbit. Every Artemis crew rides Orion, and every Orion rides SLS. If this hardware slips, the Moon landing slips with it.
Key Facts
- First flight together
- Artemis I, November 2022
- Crew capacity
- 4 astronauts, up to 21 days free flight
- SLS thrust
- 8.8 million pounds at liftoff
- Service module
- Built by ESA (European Space Agency)
- Reentry speed
- About 25,000 mph from lunar return
Timeline
December 2014
Orion's first uncrewed test flight, EFT-1, on a Delta IV Heavy
November 2022
First SLS launch sends Orion around the Moon on Artemis I
December 2022
Orion survives lunar-velocity reentry and splashes down
Next up
Artemis II crewed flight, planned
Latest Orion and SLS News

NASA at the Ion: Orion Lessons from Artemis II Shape NASA’s Moon to Mars Path
Seven weeks after the Orion spacecraft returned four astronauts from humanity’s first crewed journey around the Moon since Apollo, Artemis II Orion Vehicle Manager Branelle Rodriguez reflected on the mission’s achievemen
Artemis
International Space Station

NASA Prepares Next Artemis Rocket for Flight
As Artemis III kicks off, NASA continues working to streamline SLS production.
Artemis
Orion and SLS

Stages of Star Formation
This image, captured by NASA’s James Webb Space Telescope and released on June 5, 2026, shows just a small portion of one of the Orion Molecular Clouds, a long and massive filament of cold gas and dust beyond the Orion N
James Webb Space Telescope
Orion and SLS

I Am Artemis: Elkin Norena
Listen to this audio excerpt from Elkin Norena, resident management officer, NASA’s Space Launch System Program: NASA’s Elkin Norena has helped the agency launch more than a dozen space shuttle missions – that’s more tha
Artemis
Orion and SLS

Train Ride to NASA Kennedy for Artemis III Booster Segments
The final booster motor segments for NASA’s SLS (Space Launch System) rocket that will help propel Artemis III astronauts on their journey to space shipped from Northrop Grumman’s Railyard Shipping Facility in Corinne, U
Artemis
International Space Station

NASA names crew for Artemis 3 mission to test lunar landers
NASA has named the astronauts who will fly the next Artemis mission, a test flight in low Earth orbit where Orion will attempt to dock with two lunar lander prototypes. The post NASA names crew for Artemis 3 mission to t
Artemis
International Space Station

Live coverage: NASA to unveil Artemis 3 crew, provide updates on mission
The mission will be a low Earth orbit rendezvous between the Orion spacecraft and one or both of the Human Landing System landers: Blue Origin’s Blue Moon Mark 2 and SpaceX’s Starship.
Artemis
Orion and SLS

NASA Seeks Interest for Artemis Mission CubeSats
Organizations interested in launching CubeSats on future Artemis missions should respond to NASA’s request for information (RFI) by Monday, June 1, for initial consideration. “The SLS (Space Launch System) rocket and the
Artemis
Orion and SLS

I Am Artemis: Tim Goddard
Listen to this audio excerpt from Tim Goddard, NASA open water lead: At the end of their mission around the Moon, NASA’s Artemis II astronauts were recovered from their Orion spacecraft by a team of U.S. Navy divers and
Artemis
International Space Station

Nicholas Houghton: Engineering Crew Safety for NASA’s Artemis Missions
Nicholas Houghton always dreamed of working at NASA and one day becoming an astronaut. Today, he helps design systems that keep crews safe during missions aboard NASA’s Orion spacecraft, including the successful Artemis
Artemis
International Space Station

I Am Artemis: Ryan Schulte
Listen to this audio excerpt from Ryan Schulte, Orion flywheel project manager: As the four Artemis II astronauts traveled on a 694,481-mile journey around the Moon and back, the Orion spacecraft provided them with all t
Artemis
International Space Station

I Am Artemis: Peter Rossoni
Listen to this audio excerpt from Peter Rossoni, Orion Artemis II Optical Communications System flight manager: As a child, Peter Rossoni watched the Apollo missions launch with his family. In April 2026, he became a par
Artemis
Orion and SLS

Artemis II Mission Milestones: An Image and Video Recap
On April 1, 2026, Artemis II launched on a nearly 10-day voyage around the Moon, marking the first crewed flight of NASA’s Orion spacecraft. NASA astronauts Reid Wiseman, Victor Glover, and Christina Koch, along with CSA
Artemis
International Space Station

NASA on Track for Future Missions with Initial Artemis II Assessments
Following NASA’s Artemis II mission successfully splashing down on Earth, engineers started diving into detailed analysis of data to assess how key systems and subsystems on the Orion spacecraft, SLS (Space Launch System
Artemis
Orion and SLS

I Am Artemis: Rebekah Tolatovicz
Listen to this audio excerpt from Rebekah Tolatovicz, a mechanical technician lead supporting the Orion spacecraft’s main contractor Lockheed Martin: At NASA’s Kennedy Space Center in Florida, there is a fleet of Orion s
Artemis
Orion and SLS

Experience the Rollout of SLS Hardware for Artemis III
Digital creators and social media users are invited to register to attend the rollout of the third SLS (Space Launch System) core stage as it is prepped to head from NASA’s Michoud Assembly Facility to NASA’s Kennedy Spa
Artemis
Orion and SLS
Facts last reviewed 2026-07-11. Official mission page: nasa.gov
