SLS Block 1
NASA/Boeing · operator profile
NASA's deep space launch vehicle for the Artemis programme. Non-reusable. Launched Artemis I (2022) and Artemis II crew (April 2026).
Specifications
Frequently asked about SLS Block 1
- When did SLS Block 1 first fly?
- SLS Block 1 had its first flight in 2022, operated by NASA/Boeing. Current status: active.
- What's the payload capacity of SLS Block 1?
- SLS Block 1 can lift up to 95 tonnes to Low Earth Orbit (LEO) and 27 tonnes to Geostationary Transfer Orbit (GTO).
- How tall is SLS Block 1?
- SLS Block 1 stands 98.1 metres tall with a diameter of 8.4 metres. Total thrust at liftoff: 39,144 kN across 2 stages.
- Is SLS Block 1 reusable?
- No, SLS Block 1 is expendable — boosters and upper stages are not recovered for reflight.
