Top 3 Most Expensive Space Telescopes

The history of deep-space observation is defined by astronomical costs, with the Roman Space Telescope joining the ranks of the most capital-intensive scientific instruments ever built.

The top 3

1. James Webb Space Telescope at $10 Billion: Holding the record for the most expensive space observatory, JWST required over two decades of development to reach its launch and deployment phase. James Webb Space Telescope
2. Hubble Space Telescope's $16 Billion Adjusted Cost: Initially launched in 1990, the lifetime inflation-adjusted cost of Hubble makes it one of the most significant long-term investments in space exploration. Hubble Space Telescope
3. Roman Space Telescope Budget Positioning: With a projected lifecycle cost exceeding $4 billion, Roman is positioned as the high-efficiency successor to existing wide-field survey capabilities. Nancy Grace Roman Space Telescope

Sources

• The Planetary Society Space Telescope Costs

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