3-9 ┊ 2218 words ┊ ◄))
3-9, 2218 words, 20 minutes audio time.
Some people say that space is the final frontier. But robots are making space much less mysterious. Robots and robotic probes have been exploring the planets and helping astronauts do research since the 1970s. Look inside to learn about incredible space robots and the amazing things that they have discovered about our solar system.
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