Most Expensive Space Exploration Missions

A ranking of the costliest endeavors in human history, highlighting the massive financial investment required to operate in space.

The top 3

1. The Apollo Program: Adjusted for inflation, the Apollo program remains the most expensive space project, costing approximately $280 billion in today's dollars.
2. International Space Station: The most expensive single structure ever built in space, with development and operation costs exceeding $150 billion. International Space Station
3. Space Shuttle Program: Spanning three decades, this program cost roughly $209 billion in modern currency to maintain the reusable fleet. Space Shuttle Program

Sources

• The Planetary Society

Open the full topic