Antares Secures $161M DoD Award to Advance Nuclear Power in Space Written 14 September 2026
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Artist’s rendering of an Antares-designed nuclear propulsion system. | Credit: Antares (Press Kit)
Payload reports Antares has won a $161 million DoD contract to advance nuclear power for space, which the company says is the largest current DoD space nuclear award. The award could help mark a significant return for U.S. space nuclear power: “The US has flown one nuclear reactor in space—SNAP-10A in 1965.” More than six decades later, Antares is working to make its R1-S microreactor the next.
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