Question

the moon doesn't stay at the same at the same distance from earth. why? what will happen when the earth is not tilting at the angle of 66.5 degrees

Answer 1

Answer:

The variation in the lengths of days and nights occurs because the Earth revolves around the Sun, with its axis always inclined at an angle of 66.5°. This causes longer days and shorter nights in summer in the southern hemisphere

The reason is that the Moon is never still. It constantly moves around us. Without the force of gravity from the Earth, it would just float away into space. This mix of velocity and distance from the Earth allows the Moon to always be in balance between fall and escape.