image: ©RomoloTavani | iStock
Following the recent success of its Artemis II mission, NASA has taken the next step by rolling out the core stage of its Space Launch System (SLS) rocket for the Artemis III mission
The rollout of the SLS rocket is part of a long preparation process for the first crewed lunar landing under the Artemis program, currently targeted for 2027.
From assembly to launch preparation
The massive core stage, the largest component of the SLS rocket, was transported from NASA’s Michoud Assembly Facility in New Orleans to the agency’s Pegasus barge on April 20.
This involved specialised transporters manoeuvring the upper portion of the stage, which includes critical structural and propellant components. From there, it will travel to Kennedy Space Centre in Florida for final assembly and integration.
This phase is an important part of preparing the vehicle for launch; it will ensure that each component functions seamlessly as part of the larger system.
Standing at 212 feet tall when fully assembled, the core stage is a technological centrepiece of NASA’s deep space ambitions. It houses two massive propellant tanks capable of holding more than 733,000 gallons of super-cooled liquid hydrogen and liquid oxygen. These fuels will power four RS-25 engines, generating over 2 million pounds of thrust during launch.
The core stage is designed to operate for more than eight minutes, providing the necessary power to propel the Orion spacecraft and its crew into orbit. This performance is critical for missions beyond low Earth orbit, particularly those targeting the Moon and eventually Mars.
Collaboration and industrial effort
Boeing leads the design and assembly of the stage, while L3Harris Technologies is responsible for manufacturing the RS-25 engines. This partnership shows the complexity and scale of modern space exploration projects.
Recent efforts to standardise the SLS configuration and streamline production processes are expected to accelerate the Artemis program timeline. These changes aim to improve efficiency while maintaining the reliability required for human spaceflight.
Preparing for lunar missions
Artemis II is building on the momentum of Artemis II, which successfully tested crewed flight around the moon.
The upcoming mission will focus on validating key capabilities, including rendezvous and docking in lunar orbit. These operations are essential for future missions that will involve landing astronauts on the Moon’s surface.
The broader Artemis program is designed to establish a sustained human presence on the Moon. Beyond scientific discovery, it aims to lay the groundwork for long-term exploration and potential economic activity. Lessons learned from these missions will play a crucial role in preparing for human journeys to Mars.