The updated exploration plan details surface habitat concepts, cargo and power infrastructure, and a nuclear thermal propulsion pathfinder for crewed deep-space transit.

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NASA plans to launch its first nuclear-powered interplanetary spacecraft in 2028, a probe called Space Reactor-1 Freedom that will carry helicopters to Mars.

Artist's concept of NASA astronauts on Mars. Credit: NASA HOUSTON—NASA’s top priorities for future Mars exploration missions should be the search for current or past evidence for biological ...