Space

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Across
  1. 4. Can be up to 27 million degrees Fahrenheit. It keeps all planets in orbit.
  2. 5. 30 astronomical units from the sun. Has 16 moons, and was the first planet discovered with math.
  3. 7. Giants space snowballs made frozen gases, rock, and dust. Given nicknames like "Halley's____" and "Great ____ of 1811."
  4. 8. Donut-shaped area of ice-like celestial bodies, similar to asteroid belt.
  5. 9. 53% smaller than Earth. Also known as the "Red Planet" because of its majority of iron and soil.
  6. 11. Smallest planet in our solar system. The closest one to the sun.
Down
  1. 1. Rains sulfuric acid, sometimes called "Earth's Evil Twin". One day on this planet is equal to 243 Earth days.
  2. 2. A chunk of rock that can become a planet. Has the ability to travel 25 km per second.
  3. 3. Is the largest planet in our solar system. Could fit 1000 Earths if it was hollow.
  4. 6. 71% of this planet is water. It is the only planet in our solar system that can sustain life.
  5. 9. Happens when meteoroid burns up in the atmosphere.
  6. 10. It is the sixth planet from the sun. Known for its rings.