Space Explained by an Idiot

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Across
  1. 4. The sun and the collection of celestial bodies orbiting it.
  2. 8. A point in space so massive that not even light can escape its gravity.
  3. 9. The classification for a large object in space.
  4. 10. A rock composed of rock, metal, and dust in our atmosphere.
  5. 11. A large rock made of metal, dust, and clay floating in space. USually found between Jupiter and Mars.
  6. 13. The degree offset of a point on the celestial sphere from North.
  7. 14. A distance defined by how far light can travel in a year.
  8. 17. A contraption comprised of a metal ball and string designed to prove the rotation of the Earth.
  9. 19. A chunk of ice, dust, and gas orbiting the Sun.
  10. 20. A rock composed of rock, metal, and dust in space.
Down
  1. 1. A celestial structure made of stars, planets, dust, condensed dust, super condensed dust(Aka Black holes), and other celestial bodies.
  2. 2. Everything in existence.
  3. 3. The layer of the Sun's surface that emits light.
  4. 5. A slightly darker spot on the Sun's surface that is cooler than its surroundings
  5. 6. A rounded shape based around two points. The planets' orbits are this shape.
  6. 7. The final stage of a small star's life.
  7. 11. The distance of a point on the celestial sphere from the horizon.
  8. 12. A large cloud of gas and dust in space.
  9. 15. The belief that the Sun is the center of the Universe.
  10. 16. The belief that the Earth is the center of the Universe.
  11. 18. A rock of extraterrestrial origins composed of rock, metal, and dust on Earth.