New research by Japanese scientists suggests that such cosmic effects of an asteroid colliding with Earth or the fall of some meteorites may have given Earth the chemical ingredients needed for the beginning of life itself. Genetic instructions for all living things.
According to the British newspaper, “Daily Mail”, our planet was formed approximately 4.5 billion years ago, but the exact origins of life here have puzzled experts for a long time, and during its early existence, the Earth was bombarded by meteorites, comets and other materials from space, and it was likely that Too hot for life to exist until about four billion years ago.
The first organisms were primitive microbes that arose in the organically rich oceans, which enabled many chemical compounds to bind together and evolve to the point where they could use energy sources such as the sun and water in order to form a living microbe that could reproduce.
The formation of DNA may be a milestone in this process, and although the oldest known fossils are marine specimens dating back about 3.5 billion years, there are suggestions of life on Earth going back 3.8 billion years.
Some scientists have argued that the possibility that life based on DNA might soon evolve indicates that it got help from elsewhere.
Supporters of the hypothesis known as Panspermia believe that life was shared by meteorites traveling from one planet to another, or brought by comets or space dust.