Here's why:
* The Moon's orbit is elliptical: While the Moon's orbit around Earth is not perfectly circular, the difference in distance between its closest point (perigee) and farthest point (apogee) is not large enough to cause noticeable changes in apparent size during a single lunar cycle.
* Phases are caused by changing angles: The Moon's phases are caused by the changing angle of sunlight reflecting off its surface as it orbits Earth. The actual size of the Moon remains constant.
* Optical illusions: Sometimes, the Moon might appear larger or smaller depending on its position in the sky and the surrounding environment. This is usually a result of an optical illusion, not an actual change in size.
In summary: While the Moon may appear to change size depending on its location in the sky and other factors, its actual apparent size remains relatively constant throughout its phases.
