Earth in Space

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Across
  1. 2. is a large sphere of hydrogen has hot enough for nuclear reactions to occur in its core
  2. 3. occurs when Earth's rotation axis is tilted neither toward nor away from the Sun
  3. 5. is a natural satellite that orbits an object other than a star
  4. 6. are small, rocky particles that move through space
  5. 9. is a huge collection of stars, gas, and dust.
  6. 10. is massive enough to be nearly spherical in shape, and has no other large object in its orbital path.
  7. 11. when the Earth's rotation axis is tilted directly toward or away from the Sun
  8. 13. is the distance light travels in one year
Down
  1. 1. are small, rocky objects that orbit the Sun
  2. 4. the orbit of an object around another object
  3. 7. is the movement of one solar system object into the shadow of another object.
  4. 8. is the spin of an object around its axis
  5. 12. are small, rocky, icy objects that orbit the Sun