The mobile launcher with NASA's Space Launch System (SLS) rocket and Orion spacecraft aboard is seen inside the Vehicle Assembly Building during the opening of the doors to High Bay 3 before rolling out to Launch Complex 39B for the first time at NASA's Kennedy Space Center in Florida, USA. Before Artemis I flight test, the SLS rocket and Orion spacecraft will undergo a wet dress rehearsal at Launch Complex 39B to verify systems and practice countdown procedures for the first launch. Photographed on the 17th of March 2022.