в вики написано, что "The initial variant of SLS, Block 1, was required by the US Congress to lift a payload of 70 metric tons (150,000 lb)[17] to low Earth orbit (LEO), but exceeded that requirement with a rated payload capacity of 95 metric tons (209,000 lb).[18] As of December 22, 2019, this variant is planned to launch Artemis 1, 2, and 3."