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Anonymous users2024-02-13The universe is finite, 13.7 billion light-years large.
The universe is vast, planets similar to Earth abound, aliens, alien beings definitely exist. Or maybe the survival of extraterrestrial life does not need such a beautiful environment on Earth, so the perspective of the definition of life should be broadened.
The universe came from 13.7 billion years ago at a starting point of infinitely small volume, infinitely large mass, and infinitely high temperature.
Black holes are formed after the death of a star more than 3 times larger than the Sun, due to the absence of nuclear fusion external support, it shrinks inward inward, causing the atomic structure to change, forming a black hole.
The rays in the universe are generally the first to be produced by stars, or white dwarfs, neutron stars, black holes, etc., which are produced after the death of stars. There is also a part of **Yu Da**.
The shape of the universe has been studied in many ways and proved to be hyperbolic and not spherical or straight.
According to Hubble's law, our universe is expanding all the time, and at the speed of light.
The hyperbolic universe does not have a central point.
The universe will have a little bigger tomorrow than yesterday, a little colder, and still producing and scrapping stars as usual.
The universe is expanding in all directions every moment.
According to the current direction of evolution of the universe, it is estimated that in 300 billion years, all energy will be exhausted, and it will become a barren land.
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Anonymous users2024-02-12How big is the universe?
Are there aliens on other planets in the universe?
Are there other life on other planets in the universe?
How did the universe come to be?
How are black holes formed?
Are the rays in the universe coming from?
The shape of the universe?
Is the universe expanding?
Does the universe have a center?
What will the universe hold tomorrow?
How does the universe move?
How many years can the universe survive?
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Anonymous users2024-02-11The most abundant element in the universe is hydrogen. Hydrogen accounts for almost 92% of the total mass loss of matter that we know can be observed, while helium, oxygen, carbon and other elements account for only 8%. Hydrogen is also the main component of the sun, and the solar energy also depends on this thing.
Hydrogen is a chemical element that is placed first in the periodic table. The usual elemental form of hydrogen is hydrogen. It is a colorless, tasteless, odorless, highly flammable gas composed of diatomic molecules, and hydrogen is the lightest gas.
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Anonymous users2024-02-10The most abundant elements in the universe are described below:
The most abundant element in the universe is hydrogen.
The most abundant element in the universe is hydrogen (H), which accounts for about 75% of the weight of matter in the universe. This is followed by helium (HE), which accounts for about 25% of the weight of matter in the universe. This is because in the early days of the formation of the universe, the matter in the universe mainly existed in the form of hydrogen and helium, and over time, hydrogen and helium gradually evolved into other elements, but hydrogen and helium are still the most common elements in the universe.
In addition to hydrogen and helium, there are other abundant elements in the universe, such as oxygen (O), carbon (C), iron (Fe), etc. These elements are formed inside the star through nuclear fusion reactions, and then the costrain is released into space.
On the earth, due to the influence of geological and biological factors, some other elements such as oxygen, silicon, aluminum, iron, etc. are widely distributed on the earth, but they are not the most abundant elements in the universe.
The role of hydrogen.
"Hydrogen", also known as "hydrogen molecule", is the smallest molecule in nature, with strong penetration, and can enter any organ, tissue, cell and intracellular structure, including mitochondria and nucleus, through the diffusion effect of the mucous membrane. Hydrogen has a selective antioxidant effect and can selectively scavenge malignant free radicals. Studies have found that hydrogen has an ideal anti-inflammatory effect.
As the basic component of matter, hydrogen accounts for more than 75% of the total amount of bulk matter in the universe, and also accounts for 70% of the elements of the human body and many living organisms. Therefore, hydrogen is an element of the universe, and hydrogen is also an element of life. The molecular component that makes up the most life is water, which is also the living substance that contains the most hydrogen.
Water is very important for life, it is the mother of life, and it is also the core internal environment of cell survival, and almost all life processes are inseparable from this core environment of water.
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Anonymous users2024-02-09The most abundant element in the universe is hydrogen. Hydrogen is the most abundant element in the universe, and more than 90% of the total number of atoms in the universe as we know it is hydrogen. The second lightest element is helium, which, although it is quite rare on Earth, accounts for the majority of the remaining 10% of atoms in the universe except hydrogen.
Although the abundance of hydrogen on Earth is very low, this element of parade is the most abundant in the entire universe.
Hydrogen.
Hydrogen is a chemical element with atomic number 1 and the chemical symbol H, which is first in the periodic table. Its atomic mass is the lightest element and the most abundant element in the universe, accounting for about 75% of the mass of the universe. The main component of the star stellar shoujube slip on the main sequence is plasma hydrogen.
On Earth, the free hydrogen element formed by natural conditions is relatively rare.
With the development of the semiconductor industry, fine chemicals, and optoelectronic fiber industries, there is a demand for high-purity hydrogen. For example, the semiconductor production process requires the use of the above high-purity hydrogen. However, the purity of hydrogen obtained by various industrial hydrogen production methods is not high, and in order to meet the industrial demand for various high-purity hydrogen, hydrogen must be further purified.
Encyclopedia – Hydrogen
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Anonymous users2024-02-08There are a lot of planets in the universe, and many, many things as big as the Milky Way.
Some people may have a more withdrawn and unwilling to fit in attitude, this is a personal choice, understandable, but although they have such a character, it is still easy to become a "group pet", liked by everyone, this is not just a charm, more of a mysterious power, although cold, but willing to approach your feelings, let's take a look at which constellations are like this,Leo, Gemini, AquariusEven if you don't want to be gregarious, you can also become a constellation of group pets. >>>More
Hehe! A few people upstairs didn't answer the point.
In fact, the Bohai Sea has been a basin of sedimentation throughout geological history. >>>More
For example, because of having dreams.
That's because you are not confident enough, as long as you know yourself correctly and can look at others and yourself holistically, you will feel that you are not so bad, but you may feel that you are not in the best state or care too much about what others think or think. And other people's opinions or ideas are often one-sided, causing you to have an unnecessary sense of inferiority. As long as you do the bad things and repeat them a few more times, you will gradually become familiar with them, things can be done well, give yourself more encouragement, and believe that you can do it well! >>>More
That's right, black holes are the vortex of the universe. Because a black hole has a great gravitational pull and the density inside it is very large. So after being caught in a black hole, you basically can't get out.