The Planets and Their Dwarfs

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Across
  1. 3. Named for the Roman goddess of beauty and love, rotates in the opposite direction of other planets (retrograde motion).
  2. 5. The first asteroid to be discovered and the largest object in the asteroid between Mars and Jupiter
  3. 8. Made up of 70% water and 30% land, atmosphere is 78% nitrogen, 21% oxygen, 0.9% argon, and 0.1% other gases.
  4. 9. Has record wind speeds approaching 2400 kilometers (1500 miles) per hour encircle the planet, making this one of the windiest places in the solar system.
  5. 11. Dry, desert world, with a reddish color due to iron oxide (rust).
Down
  1. 1. about two thirds the diameter of Earth’s moon and has evidence of a rocky core surrounded by a mantle of water and ice.
  2. 2. the innermost and smallest planet, revolves around the sun quickly but rotates so slowly on its axis that a day-night cycle lasts 176 Earth days.
  3. 4. The giant among planets, has a mass 2.5 times greater than the combined mass of all other planets, satellites, and asteroids in the solar system.
  4. 6. Known as the “elegant planet”, has ring system like a large rotating disk of varying density and brightness.
  5. 7. The orientation of its axis of rotation is sideways rather than right side up.
  6. 10. Has the largest orbital period (the time it takes to go around the Sun once). Its orbit is very elliptical and has a tilted axis. Passes through the Kuiper Belt.