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Oort Cloud Quiz

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1. What is the Oort Cloud?

2. Who proposed the existence of the Oort Cloud?

3. What is believed to be the primary composition of the Oort Cloud?

4. Around what star does the Oort Cloud orbit?

5. What is the estimated distance between the Sun and the Oort Cloud?

6. What celestial bodies are believed to originate from the Oort Cloud?

7. Has the Oort Cloud been directly observed?

8. What is the likely source of perturbation that sends comets from the Oort Cloud into the inner Solar System?

9. What distinguishes long-period comets that are believed to originate from the Oort Cloud?

10. What does the existence of the Oort Cloud help explain?