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I think this probability is still very high, at least 90%, because so far no other planet has been found to have human conditions on it.
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This probability is still very high, the probability is at least 99%, and it is unlikely that there will be life on other planets.
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A new study states:There may be a large number of alien civilizations in the galaxy, but most of them have self-destructed
In the new study, the researchers used modern astronomical and mathematical statistical models to map the likely distribution of the emergence and demise of intelligent life in the Milky Way in time and space.
Back in 1961, the American astronomer Frank Drake presented the famousDrake's equationto estimate the number of alien civilizations in the galaxy that can come into contact with us. Speaking of which, the Drake equation can become popular, and Carl Sagan's promotion has contributed a lot.
It should be pointed out that the Drake equation does not really solve the problem, but it does have the brilliance of breaking down a problem that is completely impossible to solve into multiple studyable variables. And now this new study can actually be seen as an update of the Drake equation with the times.
Since the time of Carl Sagan, a lot of research has been done on the universe, especially the launch of the Hubble Space Telescope and the Kepler Space Telescope, which have given us an in-depth understanding of the density of gas and stars in the Milky Way, the rate of star formation, the formation of exoplanets, the frequency of supernova explosions, and so on. All of this allows us to make a more reliable assessment of the variables in the Drake equation.
Researchers have studied a range of factors that may influence the development of intelligent life. For example, the prevalence of sun-like stars surrounded by terrestrial planets, the frequency of deadly supernova explosions, the probability and time required for the evolution of intelligent life under the right conditions, and the possible tendency of advanced civilizations to self-destruct.
Considering these factors, they modeled the evolution of the Milky Way over time. The results show that the peak of the probability of the occurrence of life falls in time and space13,000 light-years from the center of the Milky Way and 8 billion years after the formation of the Milky Way
In other words, we are 25,000 light-years away from the center of the Milky Way, we may be marginal civilizations, and we may also be rising stars. If life and civilization were truly ubiquitous, most of it would probably be concentrated around 13,000 light-years from the center of the Milky Way, mainly because of the prevalence of sun-like stars here.
The other civilizations that still exist in the galaxy today may be young, as intelligent life tends to self-destruct on long scales. Researchers have found that even though galactic civilizations reached their peak 5 billion years ago, most civilizations may have self-destructed. Perhaps, self-destruction is the ultimate hindrance to the development of civilizationLarge filter
Well, everything will pass away, and only death will live forever.
100 million years and light years are not a unit of measurement, which is the first mistake to avoid, 100 million years is a unit of time, but light years is a unit of distance, so there is a difference between the two.
About 15 billion years ago, in a "big **" that "there was no yesterday", the universe we have today was born.
Observable Universe: See Wikipedia.
Let me briefly transcribe a few sentences: the diameter of the universe is generally thought to be 29 billion parsecs, or about 93 billion light-years; >>>More
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