Astronomy

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Across
  1. 1. a star in the Milky Way galaxy in the spiral arm
  2. 3. terrestrial or rocky surface sometime gaseous
  3. 4. contains of ice, methane, ammonia, and dust
  4. 5. the galaxy we live in
  5. 6. come from the Asteroid Belt between Mars and Jupiter
Down
  1. 1. made up of planets, moons, asteroids, comets, dust, and gas
  2. 2. made up of gas, dust, and billions of stars
  3. 5. rocky bodies covered with craters