On March 23, 2025, technicians working at NASA’s Kennedy Space Center mated together major elements of the rocket that will launch the Artemis 2 mission with the first humans to the moon in more than 50 years.
Why is this amazing?
The core stage, which is covered in yellow-orange foam insulation, is the largest component of the Space Launch System (SLS) rocket, standing 212 feet tall (65 meters). In addition to holding the propellant for its four rear-mounted rocket engines, the core is the backbone of the rocket, supporting the launch vehicle stage adapter, interim cryogenic propulsion stage, Orion stage adapter and the Orion spacecraft for the Artemis 2 mission.
Standing on either side of the core stage are twin five-segment solid rocket boosters, which were earlier stacked on the same mobile launch platform. Standing 177 feet tall (54 meters), the two boosters will provide the majority of the thrust needed to propel the four Artemis 2 astronauts on their journey around the moon.
Where is this?
From the vantage point of the photo, you are looking up and into High Bay 2 of the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Floridia.
Once the most voluminous building in the world, the VAB was previously used to stack the Apollo-era Saturn V rocket and the space shuttles that flew for 30 years.
What happens next?
The launch vehicle stage adapter will be the next element of the SLS lifted and secured atop the core stage in the coming weeks.
Meanwhile, the Orion spacecraft and its European Service Module have been stacked and configured for flight and are waiting their move to the VAB from the Neil A. Armstrong Operations and Checkout Building at the Kennedy Space Center.
Once fully assembled, the Orion topped SLS will be rolled out to Launch Complex 39B for testing. The Artemis 2 mission is targeted for launch no earlier than April 2026.
Where can I learn more?
You can read and see more from the stacking of the Artemis 2 core stage and boosters, as well as learn more about NASA’s Artemis 2 mission.
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