Presumably, in the Universe there are more than 10 septillion planets and life can appear on any of them. It is worth noting that the probability of the presence of living beings on some planets is much higher than their absence.
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These findings were made by renowned professor David Kipping. In order to make these calculations, the specialist used a Bayesian probability. With it, you can calculate the chances of an event, using a different number of assumptions and some data on whether life exists in the Universe.
Today, experts do not know how often life can appear on different planets and how exactly it becomes intelligent.
On Earth, intelligent life, unlike just living organisms, appeared only at the last stage of the planet’s existence. Most likely, the development of intelligence is an incredibly long process that takes billions of years.
If time is set back on our planet, then how often life, as well as intelligent life, will reappear. David Kipping put forward four possible scenarios.
After the algorithm was launched, it was possible to establish that the chances of the birth of life in each of the proposed cases are 9 times higher than the chances that life will be completely absent.
Kipping also added that if you replay the history of our planet, it is unlikely that intelligence will appear on it. Intelligent life is an incredible rarity that occurs several times less than non-intelligent life.