Super heavy-lift launch vehicles (SHLLV) are rockets capable of placing more than 50 metric tons into low Earth orbit, the largest class of operational launch vehicles. Current and near-term SHLLVs include SpaceX's Starship (100-150+ tonnes to LEO), NASA's Space Launch System (95-130 tonnes), and Blue Origin's New Glenn (~45 tonnes, borderline heavy/super-heavy). China's Long March 9 is also in development.
The emergence of super heavy-lift capability, particularly Starship's fully reusable architecture, is expected to fundamentally alter the economics of space. When per-kilogram costs drop by an order of magnitude, missions that were previously unaffordable become routine: large space stations, orbital fuel depots, crewed Mars missions, and massive Earth observation platforms all become economically viable.