NASA’s cost estimate of $19-22 billion to demonstrate human exploration systems such as the Space Launch System heavy lifter and Orion capsule do not take into account needed upgrades, life-cycle costs or substantial previous investments, according to congressional auditors. Also missing from initial estimates of NASA’s human-exploration initiative is the $4.7 billion spent on Orion when it was part of the previous administration’s Constellation back-to-the-Moon program, ...

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