The moon is the only natural satellite of the earth. It may be formed about 4.5 billion years ago. Soon after the formation of the earth, there are several hypotheses about its origin. The claim supported by more factual evidence is that it was formed on the earth and Mars. The fragments produced by a huge collision between celestial bodies of the same size-“Theia” are gathered on the periphery of the earth to form the “theory of the origin of the big collision.”
There are a large number of huge impact craters filled with basalt lava flows from dark volcanoes on the front of the moon, forming a vast plain called the “Moon Sea”. In fact, there is no drop of water in the “Moon Sea”. Bright, ancient plagioclase highlands and conspicuous impact craters are interspersed 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 appears very bright white, its surface is actually very dark and its reflectivity is only slightly higher than that of old asphalt. Because the moon is very conspicuous in the sky, coupled with regular moon phase changes, it has had a significant impact on human culture, such as myths and legends, religious beliefs, philosophical thoughts, calendar compilation, literature, art, and customs since ancient times.
Video source: SpaceRip
Subtitle translation production: Deep Space Portal p>