The moon is always half-lit by the sun. Because the moon orbits around Earth, we see different portions of the light on different days, creating the moon’s phases.
The moon as seen from Earth.
Moon Phases
The moon is always half-lit by the sun. Because the moon orbits around Earth, we see different portions of the light on different days, creating the moon’s phases.
The moon as seen from Earth.
carissaslens.com 
Fascinating! An easy way to visualize the moon’s veiw from earth.
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