The Solar System

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Across
  1. 2. The hottest planet in the solar system (average 461 Celsius)
  2. 4. The galaxy our solar system is in
  3. 5. A Roman god of war and a planet share this name.
  4. 7. There are eight of these in the solar system
  5. 10. Former planet declassified to a Kuiper Belt object
Down
  1. 1. The largest planet in the solar system.
  2. 3. Gas converted to helium by nuclear fusion in the sun
  3. 6. This comet is visible from earth every 75 - 76 years
  4. 8. A moon of jupiter with an icy surface and water below
  5. 9. "A small icy celestial body that orbitsn around the sun"