* Shadows: During full moon, the sun is directly behind the Earth, illuminating the Moon's face completely. This means there are very few shadows cast on the surface. Shadows are crucial for revealing surface features like craters, mountains, and valleys.
* Near Quarter Phases: When the Moon is near quarter phase, the sun is hitting the lunar surface at an angle. This creates long, dramatic shadows that accentuate the topography. The contrast between light and shadow makes these features much more pronounced and visible.
* Atmospheric Interference: The full moon appears larger and brighter in the sky, which means more light is scattering through the Earth's atmosphere. This scattering can blur details and reduce clarity.
Think of it like this:
Imagine taking a photo of a sculpture in full sunlight. You might see the shape, but details would be washed out. Now, imagine taking a picture of the same sculpture at sunset, when the light hits it at an angle. You'll notice the shadows create much more depth and emphasize the intricate features of the sculpture. The Moon is similar!
In summary, the near quarter phases offer better visibility of lunar details due to the strong shadows created by the sun's angled light, and the reduced atmospheric interference compared to full moon.
