Models of the Universe

123456789101112
Across
  1. 3. Information used to support or prove ideas
  2. 4. Objects or instruments that help us make discoveries
  3. 6. Model that places the Sun at the centre
  4. 8. The path something takes as it moves around another object
  5. 9. The meaning of the prefix "helio-"
  6. 10. What the Sun appears to do in the sky each day (____and rise)
  7. 12. Large objects like Earth that move around the Sun
Down
  1. 1. Model that places Earth at the centre
  2. 2. The space that contains everything, including stars and planets
  3. 5. A hot, glowing ball of gas like the Sun
  4. 7. The point in the middle of something
  5. 11. The meaning of the prefix "geo-"