Exploration Systems Architecture Study - Costs

Costs

The ESAS estimates the cost of the manned lunar program through 2025 to be $217 billion, only $7 billion more than NASA's current projected exploration budget through that time. This estimate may be high because it includes the cost of developing a new engine for the EDS, whereas the current plan is to use a J-2 derivative.

The ESAS proposal was originally said to be achievable using only existing NASA funding, without significant cuts to NASA's other programs, however it soon became apparent that much more money was needed. Supporters of Constellation saw this as a justification for terminating the Shuttle program as soon as possible, and NASA implemented a plan to terminate support for both Shuttle and ISS in 2010. This was about 10 years earlier than planned for both programs, so must be considered a significant cut. This resulted in strong objections from the international partners that the US was not meeting its commitments, and concerns in Congress that the investment in ISS would be wasted.

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