NASA’s Next Giant Artemis III Rocket Is Already Rising Inside Kennedy Space Center

At the Kennedy Space Center, NASA has begun assembling the massive Space Launch System rocket for the Artemis III mission, marking a significant milestone in the agency’s next human spaceflight endeavor. According to NASA, technicians have successfully raised the core stage of the rocket within the iconic Vehicle Assembly Building in Florida, where the launch vehicle will continue to take shape in preparation for a planned 2027 liftoff. This mission is poised to become one of the most closely watched tests of the Artemis era, as it will evaluate the readiness of the lunar landing systems designed by SpaceX and Blue Origin before astronauts attempt a return to the moon.

Artemis III Rocket’s Vertical Ascent at Kennedy Space Center

The first stage of the Artemis IIISLS rocket now stands vertically inside High Bay 2 of the Vehicle Assembly Building, one of the largest structures ever used for human spaceflight operations. The enormous core stage measures 212 feet tall and will eventually support four upgraded RS-25 engines originally derived from the Space Shuttle program. Once fully integrated with its upper stage, twin solid rocket boosters, and the Orion spacecraft, the complete rocket will reach a staggering height of 322 feet and weigh roughly 5.75 million pounds when fueled for launch.

NASA has confirmed the milestone in a public update highlighting the latest assembly work taking place at Kennedy Space Center. “Technicians at @nasakennedy have completed operations of lifting the largest section of the core stage for NASA’s Artemis III SLS rocket into High Bay 2,” the post stated. The next major phase will involve attaching the rocket’s engine section before the vehicle is transferred into the taller High Bay 3, where final stacking operations will occur.

The assembly campaign reflects how quickly NASA has moved forward following the successful completion of Artemis II, which recently carried astronauts around the moon during Orion’s first crewed flight. Engineers are now applying lessons learned from that mission while preparing a more demanding and politically significant test flight for Artemis III.

NASA Shifts Artemis III Mission Strategy

The mission profile for Artemis III has undergone a significant transformation from NASA’s original plans. Early concepts called for the program’s first crewed lunar landing during this mission, but ongoing development delays involving the Human Landing System vehicles forced the agency to redesign its timeline. Instead of attempting an immediate return to the lunar surface, Artemis III will now focus on testing critical rendezvous and docking procedures in Earth orbit.

There’s nothing better than seeing an SLS rocket stage vertical!

Technicians at @nasakennedy have completed operations of lifting the largest section of the core stage for NASA’s Artemis III SLS rocket into High Bay 2, where it will be connected to the engine section.

Learn… pic.twitter.com/qCEtIS7lir

— NASA Marshall (@NASA_Marshall) May 10, 2026

NASA intends for Orion and its astronaut crew to meet with one or both lunar landers currently under development: SpaceX Starship and Blue Origin Blue Moon. The mission will allow astronauts and mission controllers to practice proximity operations and verify that the landing systems can safely support future lunar expeditions.

The revised approach gives NASA more flexibility while reducing the risks associated with rushing unproven hardware into a moon landing attempt. It also transforms Artemis III into a competitive proving ground between two of the most ambitious spacecraft projects ever developed for human exploration beyond Earth orbit.

SpaceX and Blue Origin Face a Crucial Test

The outcome of Artemis III could directly influence which company carries astronauts to the lunar surface first. At the moment, SpaceX remains the leading candidate for Artemis IV, currently targeted for 2028, because its Starship vehicle secured NASA’s initial lunar landing contract. Yet Blue Origin’s Blue Moon lander continues advancing through testing and qualification work, creating the possibility of a late shift in NASA’s operational plans.

Both companies still face substantial technical challenges before astronauts can safely travel aboard their systems. Starship must demonstrate successful orbital refueling and reliable lunar landing operations, while Blue Moon continues developing the infrastructure needed for sustained deep-space missions. Artemis III will serve as the first opportunity for NASA to directly evaluate how these spacecraft perform alongside Orion during a crewed mission environment.

The pressure surrounding these demonstrations is enormous because NASA’s long-term lunar strategy depends on commercial landers becoming operational. The agency hopes these systems will eventually support regular astronaut missions to the moon and contribute to a permanent presence near the lunar south pole during the early 2030s.