Artemis II capsule returns to launch site as NASA gives major update on Artemis III heat shield

NASA’s Artemis II Orion capsule, with its heat shield, has returned to Florida’s Kennedy Space Center nearly a month after completing humanity’s first crewed journey around the Moon in more than 50 years. The spacecraft, named Integrity by its US-Canadian crew, splashed down in the Pacific Ocean on April 10 before being transported from San Diego back to Cape Canaveral for detailed post-flight inspections and preparation for future Artemis missions.

The mission was a major step for NASA’s future Moon plans, as it carried astronauts farther into deep space than humans had ever traveled before.

Heat shield performed better than Artemis I

Early analysis shows Artemis II’s heat shield performed as expected and even better than the one used during Artemis I. NASA said the amount of char loss on the heat shield was “significantly reduced” compared to Artemis I, offering encouraging signs for future Moon missions.

“Diver imagery of the spacecraft’s heat shield initially taken after splashdown and further inspections on the recovery ship found the char loss behavior observed on Artemis I was significantly reduced, both in terms of quantity and size,” NASA said in its April 21 blog.

The agency added, “Performance also was consistent with arc jet facility ground testing performed after Artemis I.” Engineers will now examine the heat shield more closely, along with the capsule’s internal systems, avionics, and research equipment. NASA also plans to remove and recycle the capsule’s electronic boxes.

Aside from what NASA described as a finicky toilet issue, Orion appeared to perform well during the nearly 10-day mission.

Artemis III preparations move forward

As Artemis II post-flight analysis begins, NASA teams are already preparing for Artemis III, the next major mission in the lunar program. On April 28, technicians moved the massive core stage of the Space Launch System (SLS) rocket inside the Vehicle Assembly Building at Kennedy Space Center.

The 212-foot-tall core stage is designed to hold more than 733,000 gallons of super-chilled liquid propellant to power four RS-25 engines during launch.

NASA said this marks the first time core stage assembly operations are taking place at Kennedy. The Artemis III core stage will first be placed horizontally before being lifted into High Bay 2, where it will be connected to the engine section and boat tail that were integrated in August 2025.

Booster segments arrive in Florida

Other major Artemis III hardware is also arriving. The first shipment of booster motor segments reached Kennedy Space Center on April 13. These segments will form the twin solid rocket boosters for the SLS rocket, generating more than 75% of the rocket’s thrust at liftoff.

Manufactured by Northrop Grumman in Utah, the segments were shipped by rail across eight states in specialized transporters.

NASA teams are now processing them inside Kennedy’s Rotation, Processing, and Surge Facility, where each part will be inspected and prepared for stacking. Once assembled, the boosters will stand 17 stories tall and help generate 8.8 million pounds of thrust during launch.

What comes next for Artemis III?

NASA is also completing final testing of the Artemis III Orion crew module. The spacecraft’s upgraded heat shield now has all 186 Avcoat blocks installed, cured, and inspected. Engineers have also completed thermal cycle testing and ultrasonic inspections.

The Artemis III service module has passed thermal cycle testing and deployment checks of all four solar array wings. NASA plans to integrate the crew and service modules with the launch abort system later this year.

Next year’s Artemis III mission will launch astronauts into Earth orbit aboard Orion to test rendezvous and docking capabilities with commercial spacecraft, technology needed for Artemis IV astronauts to land on the Moon in 2028.

NASA currently targets Artemis III for launch in 2027, with the long-term goal of returning humans to the lunar surface and building a sustained presence there.