ASTRONOMY!

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Across
  1. 2. Star at the center of our solar system.
  2. 5. Third planet from the sun
  3. 7. Is the force of attraction between two objects with mass.
  4. 9. Movement of one celestial body around another.
  5. 10. Moon is a phase of the Moon where only a small and curved.
Down
  1. 1. Refers to the continuous changes in the Moon's appearance as seen from Earth due to the varying amounts of sunlight that illuminate different parts of the Moon's surface.
  2. 3. Entire illuminated side of the Moon is visible from Earth
  3. 4. Spinning of a celestial body around its own axis.
  4. 6. When the Moon is positioned between the Earth and the Sun
  5. 8. Rising and falling of sea levels caused by the gravitational forces of the Moon and the Sun