Yes, the Curiosity rover is powered by a radioisotope thermoelectric generator (RTG) which generates electricity from the radioactive decay of plutonium-238. This allows Curiosity to operate in the harsh conditions of Mars for an extended period of time.
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There are no nuclear powered planes, and the only nuclear powered ships and subs in the US are in the Navy so use naval ports. The UK Navy has nuclear subs and these use a base in Scotland. Russia has naval ships and subs, and also nuclear ice-breakers, but I do not have port information, though they probably use Murmansk and other Arctic ports.
A nuclear-powered submarine generates energy through nuclear fission to power its propulsion systems, allowing it to transport its crew from New Orleans to Mobile. The nuclear reactor on board the submarine heats water into steam, which drives turbines to move the submarine through the water at high speeds efficiently and silently.
Nuclear propulsion is a technology that uses nuclear reactions to generate thrust for vehicles such as spacecraft or submarines. By harnessing the energy released by nuclear reactions, nuclear propulsion systems can provide higher efficiency and longer operational durations compared to traditional propulsion methods. However, concerns about safety and environmental impacts have limited its widespread adoption.
The fuel for powered nuclear ships can last up to 20-25 years before needing to be replaced. This is because nuclear fuel, such as uranium or plutonium, has a long half-life and can provide sustained power for an extended period of time.
Nuclear energy is typically used to generate electricity through nuclear power plants. Ships and submarines also use nuclear energy to power their propulsion systems. Additionally, some research facilities and spacecraft are powered by nuclear energy sources.