When did humans see the true state of the far side of the moon?

At that time, the Mayans were still in the Stone Age, and it was impossible to see the far side of the moon, but they did.

Humans cannot see the far side of the moon from Earth.

Although the Moon revolves around the Earth most of the time, because of the "tidal lock", only one side of the Moon can often be seen on the Earth, that is, the front, and the rotation and rotation of the Moon are synchronized, and the time for the Moon to circle the Earth is the same as the time for the Moon to rotate once, so the back of the Moon is always facing away from the Earth.

Tidal locking is when a gravitational gradient causes a celestial body to face another object in the same way forever, and a tidal locking object rotates around its own axis for the same amount of time as it orbits its companion, resulting in a hemisphere facing its companion in a fixed way.

In the solar system, there are many celestial bodies that are tidally locked, and in addition to the Earth and the Moon, this happens between the Sun and Mercury, planets and moons, and the two are often not affected by the orbital position, and the image seen at the same observation point is the same.

Since the rotation and revolution of the moon are exactly the same, when looking at the moon on the earth, you can only see one side, and this side is not half of the moon, in fact, we can see 68% of the moon's area at most. If we go to the front of the moon and see how much of the earth can we see, the answer is half or more. This part of the area is the size that you can always see, and if you want to see the rest of the Earth, then you have to wait, wait for the Earth to turn, so that you can see the rest of the Earth.

You just have to stay a little longer, and you can see all the places on earth.

This is because the rotation period of the Earth and the Moon is different, and the rotation period of the Moon is the same, and only one side always faces the Earth. But the Earth is not, and the rotation period of the Earth and the Revolution of the Moon are not the same.

The Moon is orbiting the Earth in an elliptical orbit at a speed of kilometers per hour, which is the rotational velocity of the Moon, and it takes days to revolve around the Earth. The rotation period of the earth is 23 hours, 56 minutes and 4 seconds, and it can be seen here that the rotation of the earth and the cycle of the moon around the earth are very different, if this cycle is the same, then they will face each other forever.

Because the Moon is always facing the Earth, if you stand on the front side of the Moon, face the Earth. At this point we can assume that the Moon is stationary, (anyway, the motion is relative, and it is enough to use the Moon as a frame of reference). Then it takes 24 hours for the earth to go around the earth, as long as you stay on the moon for 24 hours, it is theoretically equivalent to you going around the earth, and of course you can see all the places on the earth.

You don't actually have to stay for 24 hours, because it's so far away, you see half of the planet first, and when you turn to the other side of the globe in 12 hours, you can see the other half.

So we don't look at the moon from the earth to the same as we look at the earth from the moon. If you look at the Moon on Earth, you feel that it is not rotating, but not on the Moon, the Earth is rotating. This is related to the rotation period of the Earth and the revolution of the Moon.

No. Because the period of the Moon's rotation is the same as the period of its revolution around the Earth, the far side of the Moon will always be facing away from the Earth, so the far side of the Moon cannot be seen from the Earth.

No. Because of the gravitational pull of the Earth, the Moon cannot rotate, so we can only see the surface of the Moon, not the far side of the Moon.

It is impossible to see the far side of the Moon, because when the Moon is revolving, our Earth will also move with it, so we can see only one direction.

The school didn't talk about it seriously, and there were people on the Internet who said that the rotation was the same as the revolution cycle, so it was pure nonsense. The key factor is that the sun is ignored, and the moon is seen because of the reflection of the sun's rays, and the so-called back side of the moon is exactly between the sun and the earth when it is facing the earth, and the sun on the back side cannot shine at all. At this time, the moon is completely invisible on the sunny side of the earth, and the moon on the opposite side, that is, the moon seen during the day, is completely dark in the strong sunlight contrast, which should be called a lunar transit.

Speechless, the submission was unsuccessful several times.

I don't think so, because they're a round object, and they're all the same on the front and back, and humans see the same thing no matter which angle they stand on.