Celestial Bodies and Space Origins

1234567891011121314
Across
  1. 3. A natural satellite that orbits planets
  2. 5. The largest planet in our solar system
  3. 6. The hottest planet in our solar system
  4. 8. The name of our galaxy
  5. 10. A group of planets, asteroids, comets and other celestial bodies that are in orbit around a star
  6. 11. The term given to the rock planets
  7. 13. The theory used to explain the origin of the universe
Down
  1. 1. The theoretical point that contained all the mass of the universe as it forme
  2. 2. A small celestial body made of ice, dust, and rocky material that orbits the Sun.
  3. 4. A scientist who provided evidence for the origin of the universe.
  4. 7. The fourth planet from the sun in our solar system
  5. 9. An almost spherical-shaped body that revolves around the sun
  6. 12. A crucial piece of evidence supporting the expanding universe and the Big Bang theory
  7. 14. A large system of stars held together by their gravity