NASA’s Nuclear Spacecraft Takes a Step Toward Mars
A fission reactor can supply power long after sunlight fades. NASA’s SR-1 Freedom is moving closer to testing that idea beyond Earth orbit.
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A fission reactor can supply power long after sunlight fades. NASA’s SR-1 Freedom is moving closer to testing that idea beyond Earth orbit.
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On Mars, a helicopter faces a strange bargain: spin its blades faster to make lift in thin air, and the blades can suddenly become less efficient. NASA researchers are testing a shape designed to push that limit—and even make turbulence help.
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