Our solar system

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Across
  1. 4. A person who invented the telescope 1608.
  2. 8. A thing which is a known candidate for another dwarf planet.
  3. 9. A person who the theory that the earth wasn't the center of the universe.
  4. 10. A thing which is unknown objects from space, the abbreviation.
  5. 12. A thing which isn't a planet since 2006.
  6. 14. A person who is from space and isn't from the earth.
  7. 15. A person was the first people in the universe.
Down
  1. 1. A thing which is the biggest planet in our solar system.
  2. 2. A thing which is a galaxy and we live in.
  3. 3. A person who was the first person at the moon.
  4. 5. A thing which with the astronauts flying in the universe.
  5. 6. A thing that revolves around our earth.
  6. 7. A person who deals with the universe.
  7. 11. A thing which is the begin of our live.
  8. 13. A thing which is a planet between venus and mars.