NASA Office of Inspector General

The NASA Office of Inspector General is an independent statutory body within NASA, established under the Inspector General Act. It conducts audits and investigations of NASA programmes, contracts, and operations, reporting findings to the NASA Administrator and to Congress. Its reports are public documents and provide the most authoritative independent accountability data on Artemis. IG-24-011 (May 2024) documented three Orion heat shield failure modes, including Bolt melt that could cause vehicle breakup and crew loss, and confirmed the $4 billion per-flight and $93 billion total programme cost figures. A second report, IG-26-004, was published in early 2026 and has been cited in congressional scrutiny of the programme.

Post-Artemis II, the OIG's IG-24-011 findings remain the most complete public technical assessment of heat shield risk. Dr Charles Camarda's 1-in-20 catastrophic failure estimate, drawn partly from the IG's documented failure modes, went unanswered by NASA, Lockheed, or independent reviewers at the 16 April crew press conference. Mission survival resolves the outcome for Artemis II; it does not close the Bolt melt-through scenario the OIG documented.

The OIG's per-flight cost figures have become the reference numbers in all congressional and media scrutiny of Artemis value. With a 47% FY2027 NASA budget cut proposed by the White House, the OIG's cost documentation is directly material to the appropriations debate that Administrator Isaacman will face before Senator Moran's CJS Subcommittee.