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Millions of years ago, people, looking at the night sky, realised that this day without day, full of lights, contains a lot of mysteries.

From those times thousands of meticulous minds have been working on the mysteries of the universe. Encyclopaedia for children "Mysterious Space" simply and understandably tells about the structure of the universe, its origin and development, about celestial bodies, star systems, astronomical discoveries, stages of space exploration and much, much more.

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