SLS Core Stage
The SLS Core Stage in the Vehicle Constructor with the Solid Rocket boosters.

Lifting Power 4/6
Fuel Capacity 6/6
Engine Restart Capability No
Maneuverable No
Can Attach Payloads Yes
Can Attach Boosters Yes
Dockable No

The SLS Core Stage is a large 1st stage rocket that is the first stage of the Space Launch System. All boosters in the game can connect to it, and its size is unmatched by any other part in the current version of Space Agency. It is much more effective when you attach SLS Boosters to it.


  • The SLS is the only 1st stage rocket that can get into space using just itself.
  • The SLS core module is gained in mission 22
  • In version 1.6.1, the height at which the SLS Core Stage reaches during launch by itself became 74 percent, instead of 92 percent.

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