Astronaut - People, who fly in space?, Earth - The third planet is, Sun - What is the source of light and heat?, Twenty four hours - How long it takes the earth to turn around its axis?, Oxygen - From which gas humans breathe?, Mars - What is the red planet?, Saturn - Which planet has rings?, Asteroids - I live in asteroid belt., Comet - I have a tail, Pluto - I am a dwarf planet,

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