Is there another "solar system" in the universe?
Before the Sun completely turns into a red giant and devours the Earth, the Earth has a lifespan of more than 5 billion years. In your opinion, when will humanity become extinct? Before or after the destruction of the earth, or "coexisting and dying" with the earth?
When the sun began to feed the inner planet as breakfast, humans were long gone. I'm not saying this out of pessimism, I'm justified:
In fact, life on Earth doesn't have a 5 billion-year lifespan: after a few hundred million years, the sun will gradually become brighter and release more energy. About a billion years later, the energy released by the sun would cause the water in the oceans to begin boiling until only charred rocks remained on the Earth's surface.
A billion years is already an astonishing length of time, let alone 5 billion years, too long to imagine. You know, a billion years ago, plants only appeared on The Earth, and it was 700 million years before the Pancontinent began to form. The genus has existed for only about 2 million years, and homo sapiens has existed for tens of thousands of years. I still doubt that a species can really live to 5 billion years. Even if humans did not become extinct, it is very likely that they would have evolved into a completely different form before the sun evolved into a red giant.
In fact, I'm an optimist and can choose to turn it off if you want to. Like some people have said, anything I offer on this topic will likely be put into the B.S. (or dummy) folder.
I predict that humanity will indeed exist for billions of years, but not on Earth. There are millions of other solar systems in the universe, and in 100 years' time, we will reach them as viable as we would have traveled from New York to California in 4 hours 150 years ago.
(Humans can't get to Omaha in two weeks, they're not Maximas, they can't run that fast.) ）
(Hey!) It is impossible for humans to walk on the moon! Damn, on the back and forth, on the moon, he didn't have oxygen. And, come to think of it--- where do you get the air to support the buoyancy needed to fly? ）
(Water in a bottle?) You're crazy, right? When we can get everything we want for free by the creek, who in the world will buy bottled water? )
I tell my students not to be hindered by the paradigm, and not to be controlled by it in their optimism about the future. There are many things that happen in Denmark that you can't imagine (forgive the innuendo of "Little Shakespeare" here).
"Because it's too far away, we can't reach other solar systems?" What the? Are you kidding me? It's never distance that stands in our way, it's time (because we're in three-dimensional space). And once we start twisting the curve of time, traveling through time, leaving it behind us, we ourselves will become demigods. Just wait patiently for the "human cubs" of other worlds to catch up, let them integrate into our multidimensional society, and follow us to any place in the universe we want to go (if they don't blow themselves up as we once did)
It is a terrible thing to fall victim to Einstein's space-time continuum (a four-dimensional space-time structure of time and space). "But it seems to me that the entities that fly around in UFOs must know something about four-dimensional space-time that we don't know." From the South Pole to the North Pole in just half an hour? In my opinion that's really fast! (Google it)
Think about it (it doesn't help us much, but it's worth thinking about):
Imagine shining a bright flashlight on one end of a mile-long wall half a mile away. Imagine tapping the rear end of the flashlight and rotating 1/1 inch to the right. Then, record how quickly the reflections go from one end of the wall to the other. The reflection walked a kilometer at the 15th second. So, think about how many miles per hour?
It's not a particularly clever concept (kids over the age of ten think so), but I wonder if the principle behind it is useful compared to someone I'm ten thousand times smarter. (Because even 1.25 times smarter than me is nothing)
Related knowledge
The Sun, the star at the center of the solar system, is almost an ideal sphere intertwined with thermal plasma and magnetic fields. Its diameter is about 1,392,000 kilometers, equivalent to 109.3 times the diameter of the Earth; the mass is about 2×10 kilograms, accounting for about 99.86% of the total mass of the solar system. In terms of chemical composition, about three-quarters of the sun's mass is hydrogen, and the rest is almost all helium, including oxygen, carbon, neon, iron, and other heavy elements with less than 2% mass.
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3. Original from: https://www.quora.com/The-Earth-has-5-billion-more-years-to-live-before-the-Sun-turns-into-a-red-giant-and-devours-it-Do-you-think-humanity-will-perish-before-during-or-after-this-Why
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The vast universe is infinitely vast And the beauty of the dome can be seen from the bottom of the sky