New research reveals that Earth and the Moon were bombarded by a giant meteor shower almost 800 million years ago. This giant meteor shower came with thirty times more force than the asteroid strike that killed the dinosaurs.
The images were taken by the Kaguya lunar orbiter which was examined by Japanese scientists later on. It was found through the images that a very large asteroid broke up and plunged into the system of Earth-Moon. The size of the asteroid was at least 100 kilometers (60 miles) in diameter. This left a profound impact on the life of Earth.
It is roughly only once in 100 million years that an asteroid of this size has the probability to hit Earth. Furthermore, eons of erosion and other geological processes have erased impact craters of meteor strikes created before 600 million years ago. However, there is no erosion on the moon virtually. This allowed the reconstruction of the history of nearly 60 large craters to the team. The age of the formation of the large craters was looked at by the researchers from Osaka University. This was examined by examining the density of smaller craters within their ejecta range. It is where after the main impact chunks of rocks would have landed.
The meteors to strike Earth and the Moon and its mass were 40-50 million billion tonnes. It was somewhat forty to sixty times greater than the impact event of Chixculub. The mass of the meteors was calculated by using scaling laws and collision probabilities.
Mass extinction of more than three-quarters of life on Earth and non-avian dinosaurs was led by a strike like this approximately 65 million years ago. The researchers said, “Our new finding suggests that the flux of extraterrestrial elements might have influenced marine biogeochemical cycles… severe perturbations to Earth’s climate system, and the emergence of animals.”