Space Life

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Across
  1. 4. MOONS 4 moons of Jupiter
  2. 6. REVOLUTION earth is not the center of the universe
  3. 7. considered a dwarf planet in our solar system
  4. 8. UNiT semimajor axis of earth's orbit around the sun
  5. 10. NEWTON discovered the law of gravity
  6. 11. Italian philosopher created the telescope
  7. 12. also called Tycho he studied astrology, alchemy, and medicine
  8. 15. GRAVITY sun's inward pull of gravity on a planet
Down
  1. 1. earth ray at center of universe
  2. 2. FORCE force of gravity
  3. 3. a tendency to do nothing or to remain unchanged
  4. 5. drawn using string,pencil and two thumbtacks
  5. 9. BRADLEY discovered the aberration of starlight
  6. 13. two bodies with equal masses under the influence of their mutual gravity
  7. 14. total amount of matter