Planets

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Across
  1. 3. Axis is sideways and rotates North and South
  2. 4. Mercury, Venus, Earth and Mars
  3. 5. a planet that has a deep, massive, atmosphere, such as Jupiter
  4. 8. Red planet and unmanned rovers
  5. 10. Describes something that uses Earth as the reference point
  6. 11. The sun and all of the planets and other bodies that travel around it
  7. 12. a force of attraction between objects that is due to their masses
  8. 13. Largest planet and great red spot
  9. 16. a disk of matter that encircles a planet and consists of a numerous particles in orbit
  10. 17. Smaller than Uranus, great dark spot
Down
  1. 1. The law of universal gravitation states that all objects in the universe attract each other through gravitational force.
  2. 2. sun-centered
  3. 6. one of the highly dense planets nearest to the sun
  4. 7. 2nd closest to the sun and about the same size as Earth
  5. 9. Jupiter, Saturn, Uranus, and Neptune
  6. 14. many rings made of dust and ice and has low density
  7. 15. The path that a body follows as it travels around another body.
  8. 18. 2/3 covered in water, supports life