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SLS Block 1 Crew, Block 1B Crew, Block 1B Cargo and Block 2 Cargo Evolution

An artist rendering shows NASA’s Space Launch Systems (SLS) evolution
An artist rendering of the vehicle evolution of NASA's Space Launch System (SLS).

An artist rendering shows how engineers are designing NASA’s new rocket, the Space Launch System (SLS) to evolve from a Block 1 configuration to various configurations capability of supporting different types of crew and cargo missions. On the rocket’s first flight—Artemis I– the SLS Block 1 vehicle will transport an uncrewed Orion spacecraft.

Image credit: NASA/MSFC