Question

What are the phases of moon? Why do we see only a part of its sunlit side?​

Answer 1

Answer:

Sometimes the moon presents its full sunlit side toward Earth; at these times, we see a full disk of reflected sunlight, or a full moon. At other times only a portion of the moon's sunlit side points our way, so we see a sliver of reflected sunlight — a crescent moon

Answer 2

Explanation:

The Moon itself does not generate light; it is lit up by the Sun. As the Moon orbits the Earth, the portion of illuminated Moon that we see changes – giving rise to the phases of the Moon. ... When the Moon moves directly between the Earth and the Sun, we see a solar eclipse.