Moon

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Across
  1. 2. The light of the sun that is reflected back into space by the Earth, and which can illuminate other objects such as the Moon.
  2. 3. Any interference between the light from the Sun and the object being illuminated. The Moon frequently moves between the Earth and the Sun, blocking out the Sun's rays.
  3. 4. Daylight Savings Time.
  4. 6. The measurement of the diameter of a distant object from the perspective of the angle resulting between the observer and the object's outer edges. Also known as the 'visual diameter'.
  5. 8. During this phase of the Moon fifty percent of it is illuminated and visible from the Earth. It occurs after the Crescent phase and before the Waxing Gibbous phase.
  6. 9. The cliff-like wall formed by the impact of a meteor with a celestial body such as a planet or moon.
  7. 11. A term applied to the invisible path in the sky that the Sun moves through during the year, in relation to Earth and the other planets.
Down
  1. 1. The projection of the Earth's equator into space. It could be considered an invisible belt that surrounds the Earth in the minds of astronomers.
  2. 5. Term that is used to describe the First Quarter Moon and the Last Quarter Moon.
  3. 7. he famous image of the Moon frequently used in the media, consisting of only a thin crescent slice of the Moon being visible from Earth.
  4. 8. During this phase of the Moon it is entirely illuminated and visible from the Earth. The Moon is opposite the Sun in this phase, with the Earth in between.
  5. 10. This term is a unit-less measure that refers to the how much an object diffusely reflects light from the sun.