Science-y Words

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Across
  1. 1. - Has a visible ring around it.
  2. 4. - The hottest planet in the solar system.
  3. 6. - First planet to be discovered.
  4. 8. - A group of stars.
  5. 9. - Closest to the Sun.
  6. 11. Center of solar system
  7. 12. - Known as 'The Red Planet'.
Down
  1. 2. - Last planet in the solar system.
  2. 3. - Biggest planet in our solar system
  3. 5. System Has 8 major planets.
  4. 7. An invisible line going through the Earth.
  5. 10. - Has only been visited by a single spacecraft.