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1. What is the fastest an object with mass can achieve?
2. How many planets are in the solar system? (That we know of)
3. What is the name of the closest star system to the Solar System?
4. Where did the Apollo missions land?
5. What is Earth's escape velocity?
7. What happens when a star with similar mass of our sun dies?
8. What happens when a star with several times the mass of the sun dies?
9. If you look at a planet 206 million light-years away, when are you seeing it?
11. How old is the universe?
12. After a supernova, what forms?
13. What is M 31? (Messier 31)
14. When will the sun die?
15. What is the only thing in the universe that has a constant speed?
16. When does the atmosphere "end" and space begins?
17. What process keeps the sun and all other stars from imploding?
18. The sun contains approximately how much mass of the solar system?