SpaceX’s next-generation Starship super heavy-lift rocket is one step closer to the day when it may finally fly. On Monday, SpaceX fueled a fully stacked Starship for the first time. The “wet dress rehearsal” saw the company load the vehicle’s Super Heavy and Starship stages with more than 10 million pounds of liquid oxygen and methane fuel. Additionally, SpaceX ran through some of the countdown procedures it will need to complete on launch day. “Today’s test will help verify a full launch countdown sequence, as well as the performance of Starship and the orbital pad for flight-light operations,” SpaceX posted on Twitter.