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0D-Moon Phase Only

0D Moon Phase Only

TermDefinition
revolve move in a circular orbit around another space object
rotate spinning of an object on its imaginary axis
near side The side of the Moon that always faces Earth. This is the side that appears to change shape as the moon orbits the Earth.
far side The side of the Moon that never faces Earth – the “back” side of the moon – first photographed by Russia in 1959.
lighted side The portion of the moon that is reflecting light – appears to be illuminated.
dark side The portion of the moon that is NOT reflecting light – appears to be dark or invisible.
terminator the line the divides the lit and the unlit sides of the moon
new moon A phase of the Moon in which the side of the Moon that faces Earth is not illuminated at all.
phase The change in the sunlit area of one celestial body as seen from another celestial body.
full moon The phase of the moon in which the entire side of the Moon that faces Earth is fully illuminated.
first quarter The phase of the moon in which only the right half of the Moon's side that is facing Earth is illuminated.
last quarter The phase of the moon in which only the left half of the Moon's side that is facing Earth is illuminated.
crescent Literally a curved shape with pointed ends. The phase of the moon that is part way between a quarter moon and a new moon. Lighted side is less than half illuminated.
gibbous Literally means having a hump or bump. The phase of the moon between a full moon and a quarter moon. Lighted side is more than half illuminated.
waning When the Moon appears to be getting smaller – the second half of the cycle
waxing When the Moon appears to get larger – the first half of the cycle
orbit The curved path of a celestial object or spacecraft around a star, planet, or moon
axis An imaginary line passing through the center of a planet(such as Earth) that the planet spins around.
tilt The angle by which the rotational axis of the Earth differs from a right angle to the orbital plane.
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