This is a Replica of Nasa's Space Launch System (SLS) Block 1 model.  The Block 1 model will have the Orion spacecraft mounted on top, but beeing the Block 1, it does not have a lander interstaged with it. This will be the version of the spacecraft to test the Orion spacecraft via Remote Control to test life support systems for future Mars missions. The testflight will carry the Orioin farther than any spacecraft built to carry humans has before, Breaking Apollo 13's initial record. In an attempt to test radiation levels in the crew area, and other vital life support systems.