Arrived. The integrated Space Launch System (SLS) rocket and the Orion spacecraft have arrived at Launch Pad 39B at NASAKennedy Space Center in Florida in preparation for one final prelaunch test. After the completion of a successful test, NASA teams will announce a launch date for Artemis I. Stacked on the mobile launcher and mounted on the crawler-transporter, it took 10 hours and 28 minutes for SLS and Orion to travel four miles, or 6.4 kilometers, from the Vehicle Assembly Building to the launchpad. The trip began at 5:47 p.m. EDT Thursday, March 17, and the 322-foot (98-meter) tall, 3.5-million-pound (1.6-million-kg) rocket and spacecraft arrived at the pad at 4:15 a.m. EDT on March 18. During the upcoming final test, known as the wet dress rehearsal, the Artemis I launch team will practice loading and unloading propellant into and from the rocket’s tanks and run through a full launch countdown. Credits: Image 1: NASA/Aubrey Gemignani Image 2: NASA/Kim Shiflett Image 3: N...