Once a year, every flagship NASA project stands for inspection in a single document. GAO's annual Assessments of Major Projects - the 2025 edition, GAO-25-107591, reproduced here in full facsimile - is the scorecard: one hundred thirty-six pages assessing the cost, schedule, technology readiness, and risk posture of the agency's multibillion-dollar portfolio, project by project, in a format designed for comparison and accountability. The seventeenth annual edition covers the portfolio at a pivotal moment: Artemis hardware in production amid lander and suit uncertainties, Mars Sample Return in restructuring after its cost trajectory collapsed credibility, climate and astrophysics flagships balancing decadal ambitions against budget gravity, and the agency's chronic afflictions - optimistic baselines, workforce gaps, supply-chain fragility - documented with the patient repetition only an annual audit can supply. Each project page distills status, changes since last year, and the issues GAO judges most consequential; the portfolio-level analysis aggregates the lessons into patterns no single program office will state about itself. For the space-policy reader, the value is longitudinal: this series is the only place where NASA's promises meet a consistent measuring stick year after year. Paired with the NASA Inspector General reports in this series - on the Human Landing System and Artemis II readiness - it forms the documentary record of how the United States actually manages the largest exploration program since Apollo: not the press-release version, the audited one. The official source document is reproduced in full facsimile, with separate editorial apparatus of the public document, produced under 17 U.S.C. §105. For aerospace executives tracking customer risk, congressional staff, project management educators, and citizens who want the real numbers behind the launches, this is the reference volume of record for NASA's 2025 portfolio. The annual Assessments series is also, cumulatively, the best dataset in existence on how flagship space projects actually behave -- and this edition's portfolio tables extend runs of cost and schedule data stretching back nearly two decades. Educators in project management and systems engineering assign these reports because no textbook can match them: every pathology and every success is real, named, and quantified. The 2025 edition arrives at particular inflection: Artemis hardware in production, Mars Sample Return in redesign, and an agency absorbing budget pressure that forces exactly the portfolio triage these assessments exist to inform. A reader holding this volume holds the same evidence base Congress holds when it decides what flies. About this series: Nimble Ultra's American Spacepower Documents collection puts the primary sources of the space age's second great competition into durable, uniform print -- doctrine, strategy, intelligence, oversight, and exploration architecture, each volume an exact and complete facsimile of the official public release, with full bibliographic identification for citation. Government URLs break, documents are revised without notice, and libraries deserve stable copies; these editions fix the record as issued. Collect the doctrine shelf alongside the analytical flagship of the series, the RKHS-extended edition of Space Force Vector 2025. This 146-page Nimble Ultra paperback identifies U.S. Government Accountability Office as the originating body and preserves NASA: Assessments of Major Projects (GAO-25-107591) as a durable print reference. The edition is intended for policy research, technical study, teaching, professional consultation, and library collections. Read more
