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The SRC reentered Earth’s atmosphere over the Pacific Ocean at a speed of over 27,000 mph (43,500 kph) and landed in Utah only a few minutes later. The Bennu sample return capsule.

Then, the magnetic field died out roughly 4.2 billion years ago, and the Martian atmosphere as slowly stripped away over the next 500 million years. Gone was the warm, wet Mars of the past.