In 1962, the American astronomer, Frank Drake philosophy, published the same name by Drake, which was intended to assess the number of alien civilizations detected in the Milky Way galaxy, writes Popular Mechanics.
This equation takes into account data as:.
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However, this formula also takes into account which of these planets can support the existence of reasonable organisms, as well as whether these organisms can develop technologies that allow them to contact others.
In a new study, the team from Switzerland and Great Britain focused on one specific aspect of the equation - as the most important component of our Universe affects the formation of stars and, as a result, the possibility of a reasonable life. Scientists studied the connection between the density of the mysterious power in the Universe, known as dark energy, and the total number of stars formed in the history of the universe. As a result, the team described a new theoretical model of cosmic starship, applied to the Schweselnoye, as well as other possible models with different density of dark energy. In simple words, the model considers the likelihood of a reasonable life in a multi -column.
In their work, scientists turned to anthropic thinking - the course of thoughts, which consists in the idea that the fundamental properties of the Universe can be deduced, based on the fact of the existence of mankind. Humanity is a little known about the Universe, but we know something for sure: by the extreme in one tiny corner, there is still life. Scientists consider this a starting point indicating the path to understanding other characteristics of the universe.
It is believed that anthropic thinking can give an explanation of the amount of dark energy in our universe. At the end of 1980, the Nobel Physics Laureate Stephen Weinberg used this idea to assume that the observed density of dark energy in the universe indicates the existence of a reasonable life in it.
Dark energy is a mysterious force that can cause an accelerated expansion of the universe. However, it is clearly not taken into account in the Drake equation, it is associated with the formation of stars, which is a key factor in the formula. Just as life on earth could not exist without our sun, the stars are a necessary condition for the formation of a reasonable life. Scientists believe that reflections on how a different amount of dark energy in the universe affects the formation of stars can tell about other secondary universes.
According to the first author of the article, a doctor of philosophy and a researcher in the field of cosmology and astrophysics at the Institute of Computing Cosmology of the University of Dawrem Daniel Sorini, the stars are a prerequisite for the emergence of life in the form of which we know it. But the question arises whether it will be easier to appear in our universe or in a hypothetical universe with a different content of dark energy..
According to Sorini, " In their work, scientists simulated the schedule of the effectiveness of star formation in all space, depending on the various values \u200b\u200bof the density of dark energy.
The team found that the number of stars formed in the history of the Universe reaches the maximum when the density of dark energy is about one tenth from the observed value. In simple words, a hypothetically ideal universe for the formation of life would have less dark energy than our universe.
If we assume that this amount is proportional to the number of stars formed, then it would be an ideal universe to create a reasonable life. In this optimal scenario, 27% of ordinary matter in the Universe turns into stars, while in our Universe - only 23%. According to the team, this indicates that our universe is close to ideal conditions, but still not perfect.
Further, scientists examined what could have changed if the universe contained a different energy density. The team examined the multi -seniority in which each universe contains various density of dark energy, and found that 99.5% of all considered universes can boast of a higher density of dark energy than our.
The conclusions of scientists may seem contradictory, but scientists say that this is not so: separately, universes with a higher density of dark energy contain less reasonable observers, although there are much more such universes. The results of the study also show that in conjunction these multi -senities contain reasonable observers.
At the same time, scientists note that their work does not at all set aim to prove the existence of multi -senior, how to discover an extraterrestrial life. The authors of the study believe that their work is more likely to consider how the density of dark energy in the Universe can affect starship. And this serves as an indicator of the development of a reasonable life earlier Focus wrote that scientists can get a signal only from disappeared alien civilizations.