The space company will use a variant of the Dragon capsule -- different from the one it's using for ISS missions -- that can carry more than 5 metric tons of cargo for its Gateway missions. It will fly on top of the company's super-heavy lift launch vehicle, the Falcon Heavy rocket. Unlike current Dragon capsules that only stay docked to the ISS for a few weeks, the Gateway capsule will stay at the station for six to 12 months at a time.

SpaceX will launch a variant of Dragon, optimized to carry more than 5 metric tons of cargo to Gateway in lunar orbit https://t.co/NdJaFU1xSD — SpaceX (@SpaceX) March 27, 2020

SpaceX President Gwynne Shotwell said in a statement: