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Question 3: What are some key astronomical discoveries made in the 20th and 21st centuries, facilitated by advancements in space telescopes and Earth-based observatories?

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Question 4: Which planets are classified as gas giants, and what are they primarily composed of?

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Question 5: Describe the key idea proposed by Nicholas Copernicus in the early 1500s regarding the structure of the universe.

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Question 1: What is astronomy, and what does it study?

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Question 6: Describe the contributions of Nicolaus Copernicus and Galileo Galilei to the field of astronomy.

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Question 7: What is the name of the region beyond the Kuiper Belt that contains trillions of icy bodies? and what role does it play in the Solar System?

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Question 8: What is the asteroid belt, and where is it located?

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Question 2: How did ancient civilizations such as the Babylonians, Egyptians, Greeks, and Chinese contribute to the study of astronomy?