Mobile Launcher Rollback to VAB

NASA’s mobile launcher, carried atop the crawler-transporter 2, returns to the Vehicle Assembly Building (VAB) on Dec. 20, 2019, after spending months at Launch Pad 39B undergoing final validation and verification testing at the agency’s Kennedy Space Center in Florida. Standing 380 feet tall, the mobile launcher – which will be used to assemble, process and launch the Space Launch System and Orion spacecraft – will remain inside the VAB until it is ready to return to the pad with the rocket and spacecraft on top for the “wet dress rehearsal” ahead of the Artemis I launch.