According to coral fossils, the Earth's prehistoric rotation speed is fast
Many astronomers believe that in the early stages of the formation of the earth, the distance between the moon was much closer than it is now, and it could only be 12,000 miles. In the past history of the earth, there was a period when the moon took only 6 and a half hours to circle the earth.
The gravity between the earth and the moon is very important. The influence of gravity produces a brake effect, and over time, the rotation speed of the two celestial bodies has greatly reduced. The centrifugal force of the earth's rotation throws the moon farther and farther. Until today, 4 billion years have passed, and the moon is still away from the earth at a distance of 4 inches per month.
What is strange is that evidence of this phenomenon is provided by living and fossilized organisms. The growth link that can be clearly seen in many modern coral species. There are very small rings in the middle of the growth ring, and the number of rings is usually 365. Apparently, corals produce a tiny growth ring every day during the year, and corals add one layer every day.
Some varieties of coral fossil also has the same characteristics, so corals record their prehistoric growth rate on their branches. But they grow rings much more in a year than modern corals, which illustrates that there were much more days in a year than today. Such evidence shows that the prehistoric earth's rotation speed is much faster than that of 24:00 this day.
On coral studies from 370 million years ago, they have the same characteristics. Since they have 400 small links in a year, this means there were 400 days a year at that time!
The older the coral fossils, the more growth rings there are on them. Based on this growth rate, many scientists believe that in the early days of the earth's composition, about 4.6 billion years ago, every day was only 4 and a half hours!
