How big is our universe? How big the universe is, how big is the universe

The current radius of the universe is about 46.5 billion light-years, with a diameter of 93 billion light-years. However, 93 billion light-years is only the diameter of the universe that we can observe, and since the universe is expanding faster than the speed of light, we cannot know how big the universe really is if we only observe the universe from Earth, which is still an unsolved mystery.

The universe is boundless, with no beginning and no end. Boundless, because the periphery of the universe is still the universe.

If the world has an end, let's say the end of the world is a shell, isn't there space outside the shell? It doesn't matter if there is nothing outside the shell, or if it's an infinite cosmic shell, or if it's like us, there is space.

There is no beginning and no end, because time and space are only the appearance of the movement of matter. Why is there time, in order to produce and live needs, people invented the unit (seconds, minutes, hours) to compare the unit with the motion process of everything in the universe to get the quantitative relationship between them. The time axis composed of units is called time, so that the sequence of all the motion processes in the universe, the quantitative relationship is concise and clear, so time is the order of the movement of matter, and the comparative (Ma Zhe also defines time in this way) space represents the position relationship and size relationship of the existence of matter.

So the essence of the universe is matter. Matter can neither appear or disappear out of thin air, so the universe has no beginning and no end.

From the point of view of the formation of objects, objects cannot exist in the first place, and objects must be formed. The formation of an object cannot appear out of thin air, so it must be made up of the particles that make it up, and the formation of the object must have elapsed through time. The particle is also formed from the particles that make it up, and it also goes through time, going back infinitely, without being consistent.

Many people believe that the existence of matter must be carried by space, and the development of matter must be carried by time, why the existence and development of matter must be carried by things. The movement of matter is the movement of matter, and what is needed to carry it?

Beyond the universe is an infinite array of universes, our universe is only one of the tiny ones, we can now observe and study only half of our universe, 13 trillion kilometers away from us there is an inter-universe dividing line, where they call it the "star gap" ditch is 2 light years wide and 5 light years deep...

The universe is as big as I could have imagined.

Maybe it never has an end, maybe there is a bigger space outside the universe, where the universe is like the solar system, and that bigger space contains the universe, or there is a bigger ...... outside it

This is all something we can't imagine.

Human technology is not so developed, and now all the answers are just one word, guess. Two words, imagine

Our universe is actually very large, and we should not look at the world from one aspect because we should only look at the world from one aspect, but from many aspects.

Indeterminate inference: the size of the universe is equal to ten trillion times the size of your thoughts.

How big is the universe? Star Awareness Project

Because it's so big, it would take more than 100,000 years for light rays (traveling at about 700 million miles per hour) to cover the distance of the river we call the Milky Way. But our galaxy is just one of billions of galaxies in the known universe.

To describe the size of our universe, consider the following four examples:

1] A mile or mile (pronounced: lǐ or yīnglǐ [1], English: mile) is a unit of length used in the United Kingdom, the United States, the former British colonies, and the Commonwealth countries.

1 mile is equivalent to 1760 yards, which is also equivalent to 5280 feet, and in 1959 the relevant countries agreed that 1 mile is exactly equal to 1, meter.

2] Feet (English: singular foot, multiple feet), 卽 is a foot, minus pen is written as ft or , is a British unit of length, popular in places where the British ruled, and was replaced by the metric system. One yard is three feet, and one foot is twelve inches.

Converted back to the metric system, about 3,000/48 meters.

How big the universe is

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. It is said that the universe is vast and immense, and many scientists cannot say the specific range of the universe.

However, in recent years, with the continuous development and progress of science and technology, mankind has also developed more advanced exploration and testing instruments. Therefore, there are new discoveries in the range of the size of the universe. So how big is the universe?

I believe this is a question that everyone is very curious about.

The latest research suggests that the diameter of the universe can reach 92 billion light-years, and even more. Of course, some scientists also believe that the universe can no longer be described by numbers, and it needs to rely on the rich imagination of human beings to associate and depict. There are tens of thousands of planets in the vast universe, and the earth is one of the planets in the universe.

Human beings have always felt that the earth is very large and can accommodate many biological species, oceans, mountains and rivers, but the earth is too insignificant compared to the universe, and there is no comparison.

The Earth is distributed in the Milky Way, and the diameter of the Milky Way can reach 12 million kilometers, which is equivalent to 30 times the distance between the Earth and the Moon. The universe, in turn, is made up of huge superclusters of galaxies. Therefore, the scale of the universe is quite amazing, almost beyond the scope of human imagination, and there is no way for people to measure the specific scale of the universe with the distance scale that we are familiar with in life.

It is precisely because of the infinite space of the universe that people have become more curious about it, and scientists in various countries are racking their brains to try their best to accurately measure the size of the universe.

Since the universe is constantly expanding, this provides a good help for scientists to accurately measure the size of the universe, which can greatly improve the measurement accuracy of the universe. It is believed that in the near future, mankind will be able to realize the dream of measuring the universe. At that time, everyone can have a good understanding of the mysterious universe that is closely related to human existence.

The farthest distance that can be observed so far is 78 billion light-years, which is such a radius of space.

Although we humans have not really seen the end of the universe, the redshift phenomenon of the stars shows that the distance between the stars in the universe we live in is constantly increasing, that is, our universe is constantly expanding, when this expansion stops, our universe really has a boundary, of course, this is just a theory, as for what is outside the boundary, time will answer everything, it is recommended to see a brief history of time, 60 years in the shell.

The universe is like a bubble, and there are countless bubbles, and you're in one of them.

Actually, no one can know how big the universe is, how many times the universe expands, and how many times you expand.

Because of Newton's box universe, you can't see the box and the changes outside the box when you're inside the box.

How big is the universe? Star Awareness Project

The word "universe" probably originated from the famous ancient Chinese philosopher Mozi (c. 468-376 BC). He used "universe" to refer to the east, west, south, and north, and the space in all directions, and "Zhou" to refer to the time of the past and the present. Past, present, or future; Is it a recognized, or an unrecognized......In short, everything is everything.

From a philosophical point of view. It is believed that the universe has no beginning and no end, and that it is boundless. However, we are not going to go deep into this esoteric concept, and we will leave it to philosophers to study.

We might as well zoom out a little and talk about the universe that can be understood and observed using the science and technology available to us, which people call "our universe" or "total galaxy".

According to the latest observations, the farthest galaxy that has been observed from us is 13 billion light-years. That is, if a beam of light is emitted from the galaxy at a speed of 300,000 kilometers per second, it will take 13 billion years to reach Earth. This distance of 13 billion light-years is the extent of the universe as we know it today.

To be clear, the extent of the universe as we know it today, or size, is a spherical space centered on the Earth and radiated by a distance of 13 billion light-years. Of course, the Earth is not really the center of the universe, and the universe is not necessarily a sphere, but we can only understand this extent due to our current observation capabilities.

In this spherical space with a radius of 13 billion light-years, about 125 billion galaxies have been discovered and observed, and each galaxy has hundreds to trillions of stars like the Sun. So with a simple math problem, it's not hard to see how many stars there are in the universe that we've observed. In such a vast universe, the earth is really like a drop in the ocean, so small that it is insignificant.

Infinite! For us people tired!

The universe is like a bubble.

There are countless bubbles.

You're in one of those bubbles.

In fact, no one can know the size of the universe.

The universe expands several times.

You're going to expand it several times.

Because of Newton's box universe.

You're in the box.

It is not possible to see the changes in the box and outside the box.

In the 17th century, when modern science was born, people thought that time and space were two separate things, Newton believed that time and space were absolute and independent entities, he called them absolute time and absolute space, absolute space is the entity on which matter depends, and time is the entity on which motion depends. But at the beginning of the 20th century, Einstein used the special theory of relativity to unify two independent entities into an entity called space-time, which believed that time is relative, space is also relative, and only space-time is absolute. At the same time, it also unifies the previously independent matter and energy, mass and energy are the two attributes of matter, and like time and space, mass and energy are also unified.

Ten years after the publication of the special theory of relativity, Einstein once again subverted space-time, pointing out that the existence of mass and energy causes space-time to bend, and Newton's gravity is actually a phenomenon after space-time bending. When he proposed this epoch-making theory of gravity, Einstein found that matter and space-time are not independent of each other, and that space-time and space-time contain energy in curved space-time, so space-time no longer seems to be an independent entity, so he pointed out that there is no such thing as an independent absolute space-time, and space-time must exist at the same time as matter (mass and energy). In his later years, Einstein even doubted the objectivity of the existence of space-time.

At this point, we can think that space-time mass energy is a unified whole, and we call this whole the universe! In other words, the universe includes all time, space, mass, and energy. Obviously, the boundless and empty space that everyone thought could exist in the past may not exist, and even if it exists, it has nothing to do with our universe, so let's look at how big the universe is according to the definition of this universe.

In 1919, 10 years after Eddington verified the general theory of relativity through a total solar eclipse, Hubble used the luminosity of type IA supernovae to determine the distance of more than 20 extragalactic galaxies, and measured the redshift value of each galaxy through spectral analysis. According to Hubble's Law, it is easy for scientists to think that the universe as a whole seems to be expanding.

Now that the universe is expanding, what if we went back in time? The result is obvious, all the galaxies in the universe will retract into a small region, so the theory of the universe based on the expansion of the universe is naturally proposed. Now, scientists have measured the rate of expansion of the universe in different ways, that is, the Hubble constant, and because of the differences in the results measured by different methods, we generally use the value measured by Planck satellites through cosmic microwave background radiation, which is about one million parsecs, and one second is about one light year), according to which the age of the universe can be calculated to be about 100 million years.

We humans don't know how big the universe is, but it is estimated that the universe is about 150 trillion light-years large.

There is no exact number of how big our universe is, the universe is very mysterious, and there are many, many places that we don't know, which need to be constantly explored.

How big is the universe? Star Awareness Project