Is there a length of time, is there an end to the universe?

Time and space are intertwined. Before the universe was large, the universe was a "pure energy point" with almost infinite density, infinite energy, infinite temperature, and infinite gravitational pull. But the universe is big ** makes these pure energies burst out suddenly, and it is at that moment that time has meaning.

Because this is the inverse solution of the mass-energy equation (e=mc 2), matter and energy can be converted to each other. It is because of matter that time has meaning, so the universe is the starting point of time. Because there is time with matter, the end of time is the end of the universe, and conversely, the end of the universe is the end of time.

As for the end of the universe, it may also be reduced to a "pure energy point", that is, the end of time. Of course, the universe may still be **, it may still collapse, and it may also be a reincarnation.

Give me some points, but I'm all going to do it!

Time and space must be interdependent. There is no time without space, so the end of space is the end of time. The beginning of the universe is the big **, which is a singularity, and finally collapses, which is also a singularity.

In between, time and space make sense. In other words, the length of time is from large ** to collapsed.

Time has a length, from 13.7 billion years to the present. The size of the universe can be finite or infinite, but there is no end. Albert Einstein believed that the universe should be a "supersphere" with a finite size but no end.

For example, the size of the earth is limited, but we can go round and round without encountering an end. The universe is a "supersphere" floating in the four-dimensional space, so no matter how far the universe goes, it will never come to an end. There is no end to the universe.

Time has no length, and in the past, it was generally represented by the x-axis, y-axis, and origin on the blackboard in the classroom.

As for whether there is an end to the universe, there is still a lot of discussion.

Time is actually a coordinate (I say it in layman's terms), just like length, width and height are three-dimensional, time is actually the fourth dimension, as for the specific ear, you can refer to a brief history of time.

I also think it's very strange that at this moment, what are the largest and smallest objects in the universe, what are the heaviest and lightest objects, how big and how heavy can they be, how small they can be, how light they can be, the universe is really too good.

The length of time is given by man, (is there an end to walking on earth?) But the dimensionality has changed.

The lines on the martial arts biography... Big brother, neither Einstein nor Hawking can explain it, do you expect to get answers on it?

No.

According to the Standard Model of cosmology, the universe is not infinite, but about 13.8 billion years. On the other hand, the observable universe is about 93 billion light-years in diameter. So, does that mean 46.5 billion light-years away is the end of the universe?

The answer is no. We can only see objects as far as 46.5 billion light-years away when we look in any direction on Earth. But the edge of the observable universe is only the limit of what we can observe at the moment, not the edge of the universe.

Since the universe exists for a finite amount of time, and the speed of light is not infinitely fast, there is still a part of the universe that we cannot observe now, and the light there does not have enough time to complete the journey to Earth.

At present, it is impossible for humans to know the exact size of the entire universe, and it is unknown whether the unobservable universe is finite.

If the universe were infinite, there would be no end to the universe. If the universe is finite, there is not necessarily an end to the universe. As for whether there is an end to the universe and what is beyond the end of the universe, it is necessary to figure out what the geometry of the universe is.

The geometry of the universe is determined by the matter (ordinary matter and dark matter) and energy (photons, neutrino radiation and dark energy) in the entire universe, and the magnitude of the mass-energy density affects the curvature of space-time. According to the Friedman equation, a critical density can be calculated.

There is no end to the universe.

The universe has existed for 13.6 billion years, and the universe has been rapidly expanding and developing since the beginning of the big **, forming galaxies and stars in the universe, constructing our current universe, and the current universe is still expanding, scientists have proposed that the universe may not have an edge.

Because the universe as we know it has always existed in a state of expansion, there is no concept of the definition of the edge of the universe, and we still cannot understand the exploration of the universe.

The universe is finite and infinite. The universe should exist in many forms, and our universe is composed of time, space, matter and energy, and it is finite, about 100 billion light years.

The shape of the universe: The temperature of the cosmic microwave background is high, suggesting that the universe may be a saddle-like negative curved shape, which is derived from the cosmic theory, the shape of the entire universe is like a blown balloon, and we live on the "surface" of the universe.

At the same time, scientists also believe that the universe is flat, and according to NASA surveys, the universe may be flat, and the 2013 survey found that if the universe is flat, then the error is only.

Stephen Hawking of the Milky Way says that the shape of our universe may be an incredible geometry, closer to surrealist art, like the one created by the Dutch artist Moritz Cornelius Escher.

A large number of observations have shown that the universe is expanding (the accepted speculation is related to dark matter), but there is no limit to the universe. There are currently two theories about the end of the universe.

1.The universe will continue to expand.

2.Big noise, subdued and contracted, and then big **, and then used it to rise and carry back and forth.

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.

The age of the universe is about 100 million years.

While the size of the entire universe is unknown, the size of the observable universe can be measured, with an estimated diameter of 93 billion light-years. In various multiverse theories, a universe is one of the components of a multiverse on a larger scale, and each universe itself includes all of its space and time and its matter.

With the gradual improvement of the level of sky survey observation technology, human beings continue to try to draw the whole picture of the entire universe. On January 14, 2021, the National Astronomical Observatories' Beijing-Arizona Sky Survey (BASS) team and the Dark Energy Spectroscopic Survey (DESI) team jointly released the latest huge 2D universe map.

The universe also has an end, and although the universe will expand infinitely, there is a scientist who has been to the end of the universe, and he found that the end of the universe is a buried barrier, and outside the barrier are many, many parallel universes.

Many people believe that there is no end to the universe.

The most correct model of the universe is the "standard model of the universe", and the observable radius of the universe before the age is 46.5 billion light years, which does not mean that it is the "end" of the universe beyond 46.5 billion light years, but the limit of what humans can observe is so far away, so it is unrealistic to want to find the end of the universe by observation.

In fact, under the framework of general relativity, the Friedman equation may give us an answer. This equation assumes that the universe is spatially homogeneous and isotropic, so the geometry of our universe must be one of the following three cases. Straight space (where the curvature is zero everywhere), a three-dimensional sphere with a constant positive curvature, and a three-dimensional hyperboloid with a constant negative curvature, but in none of these three models of the universe has an "end" to the universe.

The origin of the universe

The universe is a general term for the vast expanse of space and the various celestial bodies that exist in it, as well as the diffuse matter. The origin of the universe is an extremely complex issue. The universe is the material world, which is in constant motion and development.

For thousands of years, scientists have been searching for when and how the universe came to be.

Many scientists believe that the universe was formed about 13.7 billion years ago. The matter and energy 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, and then a large ** occurs, and the reaction principle of the big ** is called quantum physics by physicists. The big ** caused the matter to be scattered, the cosmic space continued to expand, and the temperature also dropped accordingly, and then appeared in all galaxies, stars, planets and even life in the universe one after another.

The above content refers to Encyclopedia - The Origin of the Universe.

There is no end to the universe. The part of the universe that can be seen is balanced and flat. The homogeneity of the universe means that the group of galaxies is more or less evenly distributed in the universe, and flatness means that the geometry of space-time is not bent or distorted.

The flatness of the universe is actually a result of the equilibrium of the universe, since the concentration of mass causes space-time to bend. Moons, planets, stars, and galaxies are all examples of mass aggregation that do cause distortions in the surrounding space-time.

Meaning:

The corners of the universe are not special or different. The part of the universe that we can see is flat and uniform, and since the corners of the universe are not special, then all parts of the universe must be flat and uniform. The only way for the universe to be flat and uniform is if the universe is infinite and has no boundaries.

This conclusion is difficult for us insignificant humans to understand, but it is the most logical conclusion from scientific observations. If you fly a spaceship in a straight line in space, you will never hit a wall, a boundary, or even fly into a cosmic region with no galaxy groups.