Ranked by inflation-adjusted total program cost in 2025 USD. Apollo leads at ~$280B, Space Shuttle is second, ISS third. Here's the full top 10 — and what's program vs. mission cost.
Governments worldwide spend over $100 billion annually on space. NASA, ESA, CNSA, JAXA, and ISRO each take a radically different approach. Here's the full breakdown of who spends what in FY2025/26, and which programs create the most commercial opportunity.
