Ten pieces of little knowledge of the moon
The moon is not a ball
We used to say that a round moon is like a jade dish, and the moon is not actually a standard spherical shape. According to the british daily mail, 45 years after astronauts arrived on the moon, american scientists finally discovered the most true shape of the moon: a slight flatting and a rise on one end. The moon is more like an egg。
The center of the moon is biased towards the earth, so the egg is always directed at it。
The moon's day is very long
The day of the moon is particularly long compared to the earth, with a day and night equivalent to approximately 27. 32 days on earth. One morning on the moon, from sun to noon, takes 180 hours. So if you're on the moon, you can see the sunrise and sunset that last for days。
On the moon, the temperature varies by 300 degrees
The surface of the moon is virtually non-atmosphere, and it is exposed directly to space. Temperature changes on the monthly table have been very dramatic after the absence of atmospheric temperature mediation. The temperature on the surface of the moon can vary from around 300 degrees by day and night: the temperature of the surface of the moon can be as high as 127°c during the hottest day of the month and can be reduced to under 183°c during the coldest night。
"blue moon" is not blue
Have you ever heard of blue moon? It does not mean that the moon really turns blue, but it is a special phenomenon in the astronomical calendar. In a calendar month, if there's a second full moon, it's called the blue moon
The moon is as big as the sun on earth
The diameter of the sun is about 1. 4 million km, the distance from the earth is about 15 million km, the margin of the two figures is about 107; the diameter of the moon is about 3,500 km, the distance from the earth is about 380,000 km, and the margin of the two figures is about 108. The distance between the sun and the moon is basically the same as the diameter, so they're basically the same horns in our eyes, and they look almost the same size。
The moon will never be seen on earth
Long ago, the earth's gravity slowed the rotation of the moon. When the lunar rotation slows to a similar rate to the lunar turn around the earth, this pattern stabilizes, and it's called "tide lock."
I don't know. This makes it possible for us on earth to see only the same side of the moon。
We customarily call it the “head” of the moon, which can only be seen with a spacecraft. It was only in 1959 that the soviet spacecraft moon 3 was first photographed on the back of the moon。
