Solar System

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Across
  1. 3. Our home planet is a rocky, terrestrial planet
  2. 5. one of two ice giants in the outer solar system
  3. 6. fourth planet from the Sun – a dusty, cold, desert world with a very thin atmosphere
  4. 9. consists of our star, the Sun, and everything bound to it by gravity
  5. 10. the second densest planet, after Earth
  6. 12. the fifth planet from our Sun and is, by far, the largest planet in the solar system
Down
  1. 1. made of a thick soup of water, ammonia, and methane over an Earth-sized solid center.
  2. 2. the second planet from the Sun and Earth's closest planetary neighbor.
  3. 4. a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
  4. 7. small, rocky objects that orbit the sun.
  5. 8. a luminous ball of gas, mostly hydrogen and helium, held together by its own gravity.
  6. 11. cosmic snowballs of frozen gases, rock, and dust that orbit the Sun