SpaceNexus Promise Ledger: dated space commitments, met or late
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资源简介：
Dated public commitments by space agencies and companies (who said what, when, by when), with the outcome, the days late and the source of each statement. The status_today column is computed on the day of download. Live data and documentation: https://spacenexus.us/promises
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Zenodo创建时间：
2026-09-27
