We don't know, but the observable universe alone has a diameter of 93 billion light years, with trillions of stars and planets. Take our Milky Way as an example, there are hundreds of billions of stars in it, and the universe has hundreds of billions of galaxies like the Milky Wa

2025/05/1010:38:34 science 1321

How big is the universe?

We don't know, but the diameter of observable universe alone reaches 93 billion light years, with trillions of stars and planets. Take our Milky Way as an example. There are hundreds of billions of stars in it, and the universe has hundreds of billions of galaxies like the Milky Way.

Scientists predict that there can be at least 10 cosmic civilizations in the observable universe to the power of 15. Among the numerous cosmic civilizations, there must be many cosmic civilizations with tens of thousands or even hundreds of millions of years of civilization history. Where are they? Why haven’t humans discovered them yet?

We don't know, but the observable universe alone has a diameter of 93 billion light years, with trillions of stars and planets. Take our Milky Way as an example, there are hundreds of billions of stars in it, and the universe has hundreds of billions of galaxies like the Milky Wa - DayDayNews

The famous Fermi Paradox gives many explanations, for example, the detection methods used by humans are too backward, and advanced alien civilizations have long abandoned the backward communication method of electromagnetic waves . They may use more advanced communication methods, such as neutrino .

We don't know, but the observable universe alone has a diameter of 93 billion light years, with trillions of stars and planets. Take our Milky Way as an example, there are hundreds of billions of stars in it, and the universe has hundreds of billions of galaxies like the Milky Wa - DayDayNews

There is another possibility. Human civilization is too backward in the eyes of advanced alien civilizations, and they are like ants. Imagine that we who live on Earth will try to make any connection with an ant ?

There is another possibility that makes people even more crazy.

Let’s first assume: If I tell you that you have lived in the virtual world all your life, can you accept this?

In such a virtual world, having everything you want is a perfect world. The only "shortcoming" is: it is a virtual world, like a dream, can you accept it?

We don't know, but the observable universe alone has a diameter of 93 billion light years, with trillions of stars and planets. Take our Milky Way as an example, there are hundreds of billions of stars in it, and the universe has hundreds of billions of galaxies like the Milky Wa - DayDayNews

Maybe you suddenly make a decision, it will be difficult for you to accept such a world. But if you think about it carefully, who cares about those? Whether the world is true or not depends more on our own feelings and experiences. As long as we feel the real happiness and happiness ourselves, who cares whether it is true or not?

It’s like in a dream. We often dream of a very “satisfactory” dream and are unwilling to wake up. If we wake up accidentally, we will be very disappointed, as if we have been in a dream.

Perhaps the advanced alien civilization has long realized this: if we can create a perfect virtual world where there is only happiness without worries and pain, why bother colonizing other planets with great trouble?

A sufficiently developed cosmic civilization is fully capable of creating a virtual world that is nearly perfect, and then uploading its consciousness to the cloud of the virtual world, where to experience endless ultimate happiness.

We don't know, but the observable universe alone has a diameter of 93 billion light years, with trillions of stars and planets. Take our Milky Way as an example, there are hundreds of billions of stars in it, and the universe has hundreds of billions of galaxies like the Milky Wa - DayDayNews

Think deeply about it. If advanced alien civilizations have such abilities, how can we be sure that our own universe was not simulated by them?

With the development of human technology, humans will one day be able to simulate more and more real environments, and even the entire universe. At that time, future humans may stop the expansion of the universe and create a perfect virtual world of their own.

Maybe this is the truth. It is also the reason why we can’t find aliens yet!

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