The universe and Moon phases crossword puzzle

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Across
  1. 2. increase
  2. 3. an instant of revolving
  3. 4. the action of rotating around an axis or center
  4. 6. a meteor that survives its passage through the Earth's atmosphere such that part of it strikes the ground
  5. 8. the curved path of a celestial object or space craft around a star,planet,or moon
Down
  1. 1. a small body moving in the solar system that would become a meteor if it entered the earth's atmosphere
  2. 2. decrease
  3. 5. a small body of matter from outer space that enters the earth's atmosphere becoming incandescent as a result of friction and appearing as a streak of light
  4. 7. a regular oval shape,traced by a point moving in a plane so that the sum of its distances from two other points (the foci) is constant, or resulting when a cone is cut by a oblique plane that doesn't intersect the base