The Universe

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Across
  1. 4. He invented the telescope and makes good pizza!
  2. 6. A scientist who studies the universe.
  3. 7. A large group of stars, dust and dark matter held together by gravity.
  4. 10. The sun is at the centre.
  5. 13. An explosion of mass which cased matter to move apart and a TV show.
  6. 14. Things change over time.
  7. 15. Has nine zeros.
Down
  1. 1. Caused the formation of matter into galaxies and solar systems.
  2. 2. The earth is at the centre and other bodies move around it.
  3. 3. The galaxy we live in which wont ruin your appetite!
  4. 5. Number of years since it all started.
  5. 8. Has six zeros.
  6. 9. Made up of everything that exists.
  7. 11. He discovered that galaxies are moving apart; he also invented a telescope.
  8. 12. The study of the universe and everything in it.