How big is the universe? What are our origins?

Hubble's Law: The farther away galaxies are from each other, the faster they move away from each other. From the theory of general relativity, it is deduced that our universe is a finite and closed four-dimensional sphere, so the sphere can only expand outward to satisfy Hubble's law, so our universe expands over time.

The universe originated from the universe, the solid matter, that is, the particle state matter became the planet galaxy, and the virtual matter, that is, all kinds of rays and microwaves became the cosmic dark matter, which cannot be seen or touched!

The universe may be bounded, that is, there is a spatial boundary but it can never be walked out, for example, walking on the surface of the sphere, the volume of the ball is certain and cannot be infinite, but we just can't go to the end. If we could see infinity, then if we looked into the depths of the universe, we might see the back of our head! Ha ha!

As for the origin of our universe, there was no such thing as a universe in the beginning, only an infinite number of tiny particles and energies such as electrons. The movement of these particles is irregular and unresponsive, the universe is in chaos, in this case, of course, there is no time and space, not even a measure of time and space. Later, matter and energy came together to become a singularity, and then the universe became large.

After the atoms and molecules are gradually formed, and then they begin to gather to form stars, and the stars make various elements to form planets, and the universe comes.

I fought it myself, not a copy, right?

The universe is a video???

For example, 1. Our universe is a point on computer hardware, a molecule, we humans live on a certain atom, and our human life, as well as our perception of the world, is just an image on the display screen, just like a screensaver is unpredictable, (so life, like a dream bubble, like dew and electricity, are all floating clouds.)

2. Some people always ask, what is outside the universe, and there are always people who want to explore the outside of the universe, but let me tell you, we live in the microcosm, think about how much power and energy it needs for an atom to escape from the molecule and escape to the outside of the molecule, not to mention the so-called outer world, you don't understand, and you can't adapt to it, and it is very likely that you will be wiped out as soon as you go out, (so maybe the Buddha said that the way out of liberation is nirvana, assimilation with the universe, and only assimilation can go out).

What's more, the universe that we people know is like an image on the display screen, can you escape from the Hu image, the image can be infinitely created, there will always be a road in front of you, there will always be time, space, forever... There is a Sadako on the TV monitor, you are not scared to death), even if you go out, only to find that the outside of the "universe" is a coffee table, and the fish next to it are still swimming freely in the fish tank!!

3. The speed of light is only the speed of hard disk computing, and the speed of the intelligent body in the "space" outside is believed to be faster.

4. Human beings are emotional animals, and the intelligent bodies of the "space" outside are emotionless, or we cannot understand them.

The universe is currently the largest in the realm of human cognition. The origin of human beings is that molecules of matter, become macromolecules, form organic macromolecules, and then become living beings.

Personally, I think that the universe is infinite, and the statement of size cannot be applied to the universe. That's probably because we live in a world where there are often concepts of big and small, and suddenly you are asked to accept the concept of infinity, and we have no way to imagine ... There are a lot of sayings about the origin.,For example, the big **.,No matter what the origin is, it's right or not.,It's good to believe in anything anyway, we can't believe in gods and ghosts.,God.。。

It's all, it's nothing.

The universe is infinite, in constant expansion, for example, the moon, it is also getting farther and farther away from the earth, now it is a month around the earth, and after a long, long time, the cycle around the earth will not be January, it may be February, or more... The universe is expanding.

If you have seen the universe, you will know that we may be made of something the size of a grain of rice, hehe.

Our universe now I think it's better to measure the size by speed! Just like the size of the earth is. The origins are still being studied.

The universe is as big as your heart.

1. The universe was formed by a great ** that occurred about 13.7 billion years ago.

2. The matter and energy stored in the universe are gathered together, and condensed into a very small volume, the temperature is extremely high, the density is extremely high, and the huge pressure is generated in an instant.

3. The big ** caused the matter to be scattered, the space of the universe continued to expand, and the temperature also dropped accordingly, and then all the galaxies, stars, planets and even life in the universe came out one after another.

How big is the universe? I don't know.

The universe we now define is the boundary that we can observe, and beyond this boundary, there may be nothing, there may be something, but there are no clues (light, rays, etc.) that have reached the earth, and we have not observed.

The universe originated from a large **, not from nothingness, but similar to a black hole (singularity), all matter is compressed in a black hole, ** disperses all this matter and spreads outward (cosmic expansion).

The earliest matter was basically all hydrogen, and when some of the hydrogen coalesced under the influence of gravity, it formed a nebula.

Nebulae are more and more numerous, with more and more mass, and under the action of gravity, they form spherical shapes, which are gaseous planets or stars.

Among them, those with small mass and insufficient internal pressure to produce nuclear fusion are gaseous planets, similar to Jupiter.

If the mass is large, the internal pressure is high enough to form nuclear fusion, which emits light and heat, and is a star.

Planets rotate with each other due to gravitational attraction and are called galaxies (Milky Way).

Hydrogen nuclei in stars fuse to form helium, which in turn produces other heavy elements, but in small proportions.

Low-mass stars (suns) will gradually cool down and stop nuclear reactions after they have consumed more hydrogen.

The outer shell of an intermassive star (a sun) gradually expands, and the inner core collapses, eventually into a white dwarf, and the outer shell material is released into the interstellar.

High-quality stars (more than 5 times the Sun) have a high degree of nuclear fusion, forming iron in their cores, and expanding to a certain extent to form supernova explosions, throwing their material into space.

The material thrown by the star will reaggregate in space, hydrogen elements will re-form nebulae and stars, other heavy elements will gather to form planets, and planets will be captured by stars to form star systems (solar systems).

When there are fewer and fewer hydrogen elements and more and more heavy elements in the universe, it is no longer possible to form nuclear fusion to resist gravitational pressure, neutron stars or black holes will be formed.

The material that spreads outward at the time of the large ** spreads more and more slowly under the action of gravity, and is finally pulled back by gravity and enters the contraction phase (cosmic contraction).

Various planets and black holes merge with each other to form larger black holes, and eventually reunite into a black hole (singularity).

This singularity awaits another big outbreak.

As for how the universe originated, the most popular and widely accepted theory by scientists and the general public is the grand theory of the universe. The theory believes that the universe originated from the so-called "singularity", which is an infinitely dense and infinitely high temperature point, for reasons that are not currently known to mankind, underwent an extremely rapid expansion, which is called "big**" by scientists.

The scientific community has been searching for an answer to this question, but so far, the jury has not yet been completely conclusive.

Everyone has a common question, that is, what is the real origin?

How many scientists have been exploring, there is no one accepted answer.

What you see is not necessarily the truth, and perhaps the little bit of the universe that humans now recognize is just some kind of unknown that humans want to see.

Large**, a few years ago, a superparticle**.

The universe is generally considered infinite and came into being 14 billion years ago.

The universe is the general term for all things, the unity of time and space. The universe is a material world, which exists objectively and does not depend on human will, and is in constant motion and development, with no beginning and no end in time, no boundary and no end in space. The universe is diverse and unified; diversity in the diversity of material manifestations; Unity lies in its materiality.

The universe is a unity of space, time, matter, and energy.

It is generally believed that the universe was created 14 billion years ago. After the big **, the molecules collide and produce light and heat. Three billion years after the Great **, the first ripples of matter appeared.

After 2 billion 3 billion years, quasars gradually formed. 10 billion years later, the sun was born. Life on Earth began to evolve 3.8 billion years ago.