In a separate September report by the OIG, the SLS' Block 1B configuration, which is being built by Boeing, was found to be woefully behind and way over budget.

NASA has spent $11.8 billion since it began developing SLS in 2011. After many delays, the huge rocket debuted on Nov. 16, 2022, when it launched NASA's successful uncrewed Artemis 1 mission to ...

On top of the $24 billion already spent to develop Block 1, this lifts total SLS development costs (again, development, not including production and launch) to nearly $30 billion.

NASA's Space Launch System, or SLS, rocket sits on a launchpad at Kennedy Space Center in Florida on November 3, 2022, ahead of the launch of the Artemis I mission, a successful uncrewed test ...

That report estimates the Block 1B version of SLS, to be used starting with Artemis 4, will initially cost $2.5 billion per flight. A 50% cost reduction under EPOC would mean the SLS costs would ...

An illustration of the Mobile Launcher (ML) 2, designed to accommodate the Block 1B version of SLS. A NASA audit found serious cost overruns and schedule delays in the development of ML-2 by Bechtel.

Revising Artemis Long-time advocate of SLS rocket says it’s time to find an “off-ramp” "A revised Artemis campaign plan should be a high priority for the new NASA Administrator." ...

"Our analysis shows a single SLS Block 1B will cost at least $2.5 billion to produce—not including Systems Engineering and Integration costs—and NASA’s aspirational goal to achieve a cost ...