Nuclear engine with NASA support could send humans to Mars in 45 days

May 22, 2025
The SPAR program aims to develop nuclear electric propulsion technologies for future space exploration. The technology will be designed for both military and civilian applications, Chris Young writes for Interesting Engineering.

LOS ALAMOS, N.M. - Space Nuclear Power Corporation, also known as SpaceNukes, has been named the industrial partner for developing an advanced fission reactor for nuclear electric spacecraft. Chris Young writes for Interesting EngineeringContinue reading original article.

The Military & Aerospace Electronics take:

22 May 2025 - The SpaceNukes team designed, built, and ground-tested the 1 kW Kilopower reactor for NASA in 2018. They are working with the Space Force on a 12 kW Kilopower design and are working toward a flight demonstration. In parallel with JETSON, the SpaceNukes are working to commercialize nuclear energy for power, heat, and electric propulsion to serve the needs of the new space economy.

"Nuclear Electric Propulsion will achieve game-changing performance via stepwise technology evolution. Our plan will begin with a 100 kW plus NEP system as a steppingstone to a less than 5 kg per kW multi-megawatt NEP system with the capability to reduce the round-trip human transit time to Mars from more than a year to a few months," said Dr. David Poston, CTO of SpaceNukes.

Related: Ad Astra and SpaceNukes partner to develop nuclear electric propulsion

Related: White House proposes 24% cut to NASA budget

Related: Lockheed Martin hands over Artemis II Orion spacecraft to NASA ahead of 2026 lunar mission

Jamie Whitney, Senior Editor
Military + Aerospace Electronics

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