Researchers from Osaka University in Japan recently completed a study of nearly 60 lunar craters using observations by the lunar orbiter Kaguya,media reported. They found that about 800 million years ago, the moon experienced a bombing from an asteroid impact. This means that the Earth almost certainly experienced a similar situation at the same time.
As the researchers point out in a new paper published in Nature Communications, determining the history of asteroid impacts on Earth is not easy, as the weather erodes and essentially erases most of the craters. The moon, on the other hand, does not have such erosion, which can serve as a physical record of asteroid impacts in the Earth-moon system.
By studying the age of some craters on the moon — to see which ones overlap and which are formed in other craters — scientists can have a good idea of when the Earth and the moon are in large numbers of asteroid impacts. This time, the researchers determined that the age of these craters was very much in line with the period of dramatic environmental changes in Earth’s history, suggesting that many of the effects in a short period of time contributed to dramatic changes in the Earth’s environment.
“Considering the age of radiation from the Copernicus crater and the impact of the glass sphere at the Apollo landing site, we conclude that the meteor shower was present throughout the moon about 800 million years ago,” the researchers wrote. Based on the caldera proportional ity law and the probability of collision with the Earth and the moon, we believe that meteoroids of at least (4- 5) x 1016 kg — about 30 – 60 times as many as the Hexzurube impact in Mexico – immediately fall into the lunar system before the ice age, which is a period of major environmental change. “
The huge Hexsouluber crater is considered to be the best evidence of the asteroid impact that led to the massive death of dinosaur species and many other life forms on Earth. Now, the new study shows that it is 60 times the mass of the Hexsouluber asteroid that hit Earth, which has been gradually erased by the Earth’s surface during smaller impacts.