In the universe, the most familiar galaxy for mankind is the solar system, the parent galaxy where the earth is located. So, what does the solar system include? Arranged from the inside to the outside, the currently known main stars are the sun, Mercury, Venus, Earth, Mars, asteroid belt, Jupiter, Saturn, Uranus, Neptune, and Kuiper belt. In addition, there are also astronomers. Presumed to exist, the Oort Nebula with a radius of about 1 light year.
It can be said that although the solar system is not worth mentioning in the Milky Way and the universe, it is big enough for humans, and it is even possible that humans will never have Way to fly out of the solar system. Here, letâs take Voyager 1 which flew away from the earth in 1977 as an example. In 2012, astronomers thought it had reached the edge of the solar system, but the answer remains whether it has flown out of the solar system or not. Is unknown. If there is a huge Oort Nebula outside the solar system, it will take at least tens of thousands of years for the Voyager 1 to maintain its speed.
Many people may think that the "Voyager 1" has flown very fast, but if converted to light years, in more than 40 years, "Voyager 1" "It has just flown 0.0023 light-years away. That is to say, if humans set off from the earth and proceed at the speed of Voyager 1 in the future, it will take at least 40 years without the Oort Nebula. Time to fly out of the solar system.
This is very difficult for humans. According to the current lifespan analysis of humans, humans can only live to more than 100 years old at most, leaving the growth and development stage behind. And the aging stage, the time of human beings is only 30-40 years. If a person leaves the earth in a spacecraft when he is 20 years old, it is not possible to reach the edge of the solar system until he is more than 60 years old. For anyone, it is very difficult to bear. In the long years of decades, without considering the issue of food and housing, it would be impossible to achieve it if you were trapped in one space for most of your life.
Some friends may think that if mankind successfully masters the speed of light in the future, then flying away from the solar system, including the Oort Nebula, is just over a year, then mankind When will it be possible to fly at the speed of light? According to Kardashovâs cosmic civilization hierarchy, human beings are now at the lowest level of civilization, only 70% of level 1 civilization. We have not even studied the earth to understand that the unknown area in the ocean alone is as high as 90%. %, and it took more than 5 million years for humans to get here.
The civilization that masters the speed of light is the most powerful three-level civilization in the universe. The distance is from 0.7 to 3, I believe itâs already in everyoneâs mind. Of course. According to the current development of mankind, it will take at least tens of millions of years for us to achieve the speed of light. At that time, it is still unknown whether mankind can survive on the earth safely.
Why do you say that? The first is the ecological and environmental problems inside the earth. The greenhouse effect is serious today. If it is not rectified in time, mankind may usher in a "disaster of extinction" in the next few hundred years. Just imagine that the greenhouse effect has not been resolved. How to imagine what will happen tens of millions of years from now? Therefore, the solar system is very likely to keep human beings on the earth for a limited time, so that we can't leave. Do you think this possibility is high? Welcome everyone to share your views with us!
