The Solar System

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Across
  1. 4. Comets grow ___ from being heated up.
  2. 6. How many times per day does Mar's largest moon orbits the planet?
  3. 7. Venus has a thick and ___ atmosphere that would make it impossible to live on.
  4. 8. The third brightest object in the sky viewed from earth.
  5. 10. Uranus is named after the Greek god of what?
  6. 17. The fifth largest planet in the Milky way.
  7. 18. Is the largest moon to Mars.
  8. 20. NASA sends ____ to Mars.
  9. 22. This planet has seasons, volcanos, and polar ice caps.
  10. 23. In history, meteors were known for great _____.
  11. 24. Jupiter has no ___ so you would fall to the inside of the planet.
  12. 25. This planet's moons are named after characters from Shakespeare's and Alexander Pope's works.
  13. 27. Like the moon, Mercury has many ___ on its surface.
  14. 28. One of the largest known dwarf planets in our solar system.
  15. 30. This moon's orbit is opposite of its planet's.
Down
  1. 1. If the Sun were as tall as a typical front door, Earth would be the size of a ____.
  2. 2. The total mass of all the ______ combined are less than that of our moon.
  3. 3. Are most commonly known as shooting stars.
  4. 5. Jupiter's moon has ___ all over the surface because of the volcanos.
  5. 9. How old was the person who named the dwarf planet, Pluto?
  6. 11. This planet has the fastest rotation.
  7. 12. Pluto and it's moon, ____, orbit each other.
  8. 13. Saturn is the namesake for what day of the week?
  9. 14. Jupiter's moon that is slightly larger than Earth's moon and volcanic.
  10. 15. These rocks in the sky are made of dust and ice.
  11. 16. Has short days, but VERY long years.
  12. 19. Neptune has the most ____ weather out of all the other planets.
  13. 21. This dwarf planet can either be farther or closer to earth than Neptune.
  14. 22. This planet has a thin atmosphere and does not have any moons.
  15. 24. The atmosphere on the largest dwarf planet is so frozen, it collapses on the surface as what?
  16. 26. Nine Earths can fit into this planet.
  17. 29. Asteroids are rich in what material.