From the earliest times, people have looked up at the stars and the planets. Today, we know more about them than we ever have. We can become astronauts, work in space, or join a future mission to Mars. Did you know that the first astronauts were animals? That for astronauts working in space, the sun rises 15 times in 24 hours? Do you know how you might train to become an astronaut? Or where astronauts might explore next?

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