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The Earth is about 4.5 billion years ago. When it was formed from rocks colliding around the dim young sun, it was probably not lively, and for a long time geologists thought life would not appear for more than a decade. The idea came from the analysis of Moonlock, brought back from Apollo Landings. This indicated that the Earth was hampered by space rocks from 4 billion to 3.8 billion years ago. The meaning was that, as we know, it must have started after that, since the previous creatures were getting faster.
“There are two problems with that.” Philip Donohue At the University of Bristol, UK. First, the model suggests that some life could have survived deep within the ocean. Even worse, it appears that the heavy late artillery fires did not actually occur now. The Apollo mission produced the impression of a large artillery over a short period of time, as all gathered rocks of similar age.
Early in the history of the Earth, we found that major effects had sporadically occurred over hundreds of millions of years. However, it is also known that a Mars-sized body collides shortly after the formation of Earth, evaporating the planet's surface. “If life had been born earlier, it would have been wiped out,” Donohue said.
The oldest rock on the earth
Life began when inerts were self-organised into a living system, but despite decades of research, how it happened remains a mystery. As the fossil record gets worse, it's also a big challenge to understand that it happened when it happened…
Source: www.newscientist.com