Q1 refection crossword puzzle

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Across
  1. 4. orbit can be used as a replacement for this word. on Earth one of these is equivalent to one year
  2. 6. The study of everything beyond the Earth's atmosphere
  3. 8. This word means to get smaller and is often used when speaking of the phases of the moon
  4. 9. The proper name for Earth's Moon
  5. 12. when the Moon is positioned exactly between the Earth and the Sun
  6. 13. remains of a 10,000+ year old organism that has been replaced with stone
  7. 14. These come in a spiral, elliptical, or irregular shape. Inside, there are billions of individual solar systems
  8. 16. An imaginary line that divides the Earth into the northern and southern hemispheres
Down
  1. 1. When the Earth is positioned exactly between the Sun and the Moon
  2. 2. This word is equivalent to day and night on Earth.
  3. 3. This celestial body doesn't quite fit the requirements to be a planet. Pluto is an example of one
  4. 5. planets The proper name for the gas giants of our solar system
  5. 7. The tilt on the Earth's axis is the reason we have these. they created time periods were the temperature changes
  6. 10. this force holds everything together
  7. 11. A network of planets orbiting a singular star
  8. 15. Layers found underground that are made from different materials