Why the moon looks different over a month?

The moon appears different throughout the month due to its phases, which result from its position relative to the Earth and the Sun. As the moon orbits the Earth, varying portions of its surface are illuminated by sunlight, creating phases from new moon to full moon and back. This cycle takes about 29.5 days to complete, causing the moon's appearance to change gradually over time. Additionally, the moon's tilt and distance from the Earth can also affect how we perceive its size and brightness.