The space telescope “Kepler” has found more than 500 million planets in our galaxy suitable for life. In this connection, the astronomers and mathematicians insist that only in our galaxy there must be thousands, if not tens of thousands of advanced extraterrestrial civilizations.
And as in the rest of the universe they must be uncountable. However, skeptics argue that there is no one but us, referring to the famous Fermi paradox. According to legend, the Nobel laureate Enrico Fermi once at dinner was listening to his fellow physicists who argued that other forms of life are not uncommon in the universe.
And in turn he asked: “Well, where are they?” Physicists could not find an answer. This apparent contradiction – a huge universe with no contact among its inhabitants – then was called Fermi paradox. A quarter-century later English scientist Michael Hart said that if there were thousands of alien civilizations, they would have got to us millions of years ago.
To date, no one from other worlds has reached us. And this, according to the skeptics, is the most convincing argument in favor of the fact that aliens just do not exist and we are alone, all alone…
Recently, it was substantiated by the astronomer Dimitar Sasselov, Harvard professor, one of the leaders of the scientific program of the telescope “Kepler”. The scientist estimated how many years would have to pass from the creation of the universe to the emergence of the mind.
So, about 1 billion years it took for the young stars to gather enough hydrogen and helium to form planets. Another 8 – 9 billion years left on the very formation of rocky planets and creation of conditions suitable for life. In total, 9 – 10 billion years needed, while the age of the universe is 13.7 billion years. It turns out that the Earth, which is determined by the age of about 4.5 billion years, fits well into this time frame.
It means that there is a high probability that our planet is the first to host life. So we are the first intelligent beings in the universe. Sasselov believes that the time needed for the emergence of even the simplest organisms may be commensurate with the age of the universe. Consequently, if there is life somewhere else, their civilization is unlike to be more advanced than ours.
Now, let’s look at the future. Life on our planet is estimated to die in about 2.8 billion years, when the Earth will be destroyed by the growing Sun. But about a billion years before it will still be inhabited. Who will be living on it? Our supramental descendants or some hideous monsters? Neither one nor the other.
Bacteria – single-celled organisms floating in small lakes with hot salt water – will be the remaining population of our planet, believe Jack O’Malley-James and his colleagues at the University of St. Andrews, Scotland. These results, taken from a mathematical model, show that any habitable planet orbiting a star like ours awaits such a sad fate.
The researchers used their model on various Earth-like planets, and it turned out that the newborn life usually continues a primitive existence for about 3 billion years. Then it becomes more and more complicated up to the emergence of the mind. And after a relatively short period of time it starts getting simplified again until it dies out.
The results of the research show that the probability of finding other intelligent beings in the universe is slight because most of them are likely to exist in bacterial form.
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