It was powered by a nuclear generator and bristled with lasers, scoops, cameras, and mechanical claws.

NEWYORKER: The Martian Chroniclers

Every night, it shuts down its engine for eight hours to recharge its batteries with its nuclear generator.

NEWYORKER: The Martian Chroniclers

Babcock builds smaller nuclear units of 100 megawatts, which can also be aggregated together to supply as much power as a base-load nuclear generator, or 1, 000 megawatts.

FORBES: After Fukushima, U.S. Seeks to Advance Small Nuclear Reactors

Each of the reactors will be a small, modular, 125MW advanced light water reactor, which at the present time includes a design for the nuclear core and steam generator to be located at the same site, with passive safety designs.

FORBES: TVA Signs Deal for Modular Nuclear Reactors

Instead, NASA imbeds a nuclear material in a radioisotope thermal generator.

FORBES: The Trillion Mile-Per-Gallon Engine