✅ Teams successfully lowered the @NASA_SLS core stage down onto the mobile launcher in between the already assembled twin solid rocket boosters.⁰
🤯 Weighing more than 188,000 pounds without fuel and standing 212 feet, the core stage is the largest element of the SLS rocket. pic.twitter.com/HX1mhzUMzb

— NASA's Kennedy Space Center (@NASAKennedy) June 12, 2021