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NASA’s oldest Mars spacecraft have lasted for decades
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NASA’s oldest Mars spacecraft have lasted for decades

So: Mars Odyssey and the Mars Reconnaissance Orbiter have far outlived their planned missions, delivering decades of observations from 140 million miles away. Their findings have transformed our understanding of water on Mars, revealed a changing surface, and helped NASA rovers stay in touch with Earth. Keeping the orbiters operating takes ingenious engineering, from updating MRO’s star map to making Odyssey’s dwindling, hard-to-measure fuel last. Their remarkable longevity is a testament to resilience, careful problem-solving, and the lessons NASA learned from earlier Mars mission failures.
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