NASA’s nuclear Mars mission to cost over $2 billion

[Marlin]

NASA's nuclear Mars mission to cost over $2 billion

https://www.politico.com/news/2026/07/21/nasa-nuclear-mars-mission-cost-01005610

[Core Content]

NASA confirmed the Space Reactor-1 Freedom mission will cost at least $2.1 billion. The agency plans to fund the project through fiscal 2029 by reallocating resources from existing exploration accounts. This initiative aims to demonstrate nuclear electric propulsion by launching a reactor-powered spacecraft to Mars in late 2028.

The project relies on collaboration with the Department of Energy to design and assemble the reactor. By repurposing hardware originally intended for the canceled Gateway lunar station, NASA intends to accelerate development timelines. This mission represents a shift toward nuclear-powered deep space exploration, though the exclusion of science payload costs raises concerns regarding potential impacts on broader agency budgets.

The price tag doesn't include the cost of the science mission the new spacecraft would ferry to the Red Planet.

The SpaceX Falcon 9 rocket launches from Vandenberg Air Force Base carrying the SAOCOM 1A and ITASAT 1 satellites, as seen during a long exposure on Oct. 7, 2018, near Santa Barbara, California. | David McNew/Getty Images

NASA administrator Jared Isaacman's ambitious plans to build a nuclear-powered spacecraft and fly it to Mars will cost over $2 billion, the agency confirmed this week.

Read the full article at politico.com:
https://www.politico.com/news/2026/07/21/nasa-nuclear-mars-mission-cost-01005610