Tone: Four tones in the month, bright and soft.
There are a large number of huge impact craters on the front of the moon, which are filled with basalt lava flows from dark volcanoes, forming a vast plain called "Moon Sea". In fact, there is not a drop of water in the Moon Sea. There are bright and ancient plagioclase highlands and obvious impact craters between the periphery of the Moon Sea and the Moon Sea.
It is the brightest celestial body in the sky except the sun. Although it is very bright white, the surface is actually very dark, and the reflectivity is only slightly higher than that of old asphalt. Because the moon is very conspicuous in the sky, coupled with the regular changes in the phases of the moon, it has had a great influence on human culture such as myths and legends, religious beliefs, philosophical thoughts, calendar compilation, literature and art, customs and traditions.
Extended data
The moon itself does not shine, but reflects sunlight. The brightness of the moon varies with the angular distance between the sun and the moon and the distance between the earth and the moon. The brightness at the full moon is more than ten times higher than that at the top and bottom chords. ?
The average brightness of the moon is 1/465000 of the brightness of the sun, and the brightness varies from 1/630000 to 1/375000. The average brightness at the full moon is-12.7, etc. Its average illumination to the earth is 0.22 lux, which is equivalent to the illumination of 100 watt electric lamp at a distance of 2 1 meter. The surface of the moon is not a good reflector, and its average albedo is only 9%, and the other 9 1% is absorbed by the moon.
The albedo of Guangdong Sea is even lower, about 7%. The albedo of the lunar highlands and craters is 17%, and it seems that the mountains are brighter than the moon sea. ?
The distance from the moon to the earth is about 1/400 of the distance from the earth to the sun, so the moon is as big as the earth to the sun.