Most people who see that the pattern on the moon’s surface has not changed He thinks the moon will stay where it is. But the situation is not as you expected.

Bride, Why does the moon look like this? let’s see.

The reason we always see the same face of the moon is not, contrary to popular belief, that the moon does not rotate.

The Moon rotates like all other celestial bodies in the solar system. But it does this every 29 days. So this speed is the same speed at which the Earth rotates around it, and the same side always faces the Earth.

The moon is faster when it is closer to the earth, If it is further away, it moves slower. Meanwhile, the rotation rate is constant. As a result, parts of the more distant hemisphere appear on the edge that we can see on one side, while part of the near side normally disappears on the other side.

However, this situation gives us This allows you to see the moon by only a few degrees.

On the other hand, the Earth and the Moon influence each other’s rotation.

The moon is the reason the days are getting longer, but it takes millions of years for a noticeable difference to occur. Again, given the much greater mass of the earth, Not surprisingly, the Earth’s influence on the Moon is much greater.

This effect It forces the length of the lunar day to be aligned with the period of its orbit. If the moon orbits faster than the earth, it slows down until the periods match. If it orbits faster, it speeds up.

In summary, this is why we always see the same side of the moon It’s because of the rotation speed.

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