The universe has been expanding, how can the earth not expand with the universe?

In addition to the earth, the bigger is the universe, hundreds of years ago we began to explore the universe, and found that the universe is huge is unimaginable, in recent years, we have also found that the universe has been growing, just like human beings from youth to middle age, slowly expanding, the universe has been expanding, why doesn't the earth expand with the universe? We can think of the universe as a body, but as the cell that makes up the body, the earth will not grow, just like we have more and more cells in our body, but the cells will not grow.

The expansion of the universe is a fact, but in recent years it has been discovered by us, the universe without expansion has been so large that there is no boundary, even if it is at the speed of light to cross a row it takes hundreds of years, there are countless planets in the universe, in places we can't see, the planets are still being generated, these are very normal things, but as a part of the universe, the earth will not expand, the earth is equivalent to the cells of the universe, cells will only be generated, and generally will not grow.

If the earth expands with the universe, it will be a very terrible disaster, the earth becomes larger and means that the land environment we live in is getting bigger and bigger, which seems to be a very good thing, but the expanding earth will not have such a good balance with the surrounding planets, various disasters on the surface of the earth will occur frequently, it is not a good thing for small creatures at all, and the expanding earth is likely to be at some point in the future**, this is a possible thing, just like the flour that is oversoaked with foaming powder in lifeIf it is too big, something that has no internal substance will collapse.

The earth as the only planet we can live on now, we must protect it, it is the basis for the continuation of our human civilization, according to scientific research, in hundreds of millions of years, the solar system is stable, what we need to do is to protect the environment, so that the living people and animals live better.

In fact, the earth is also expanding, but it is expanding very slowly, and you can't feel it, and there is no rapid expansion of the universe.

Because if the earth expands with the universe, then the human beings living on it will also suffer with it.

The expansion of the universe is due to the external force, that is, the so-called dark energy, which itself is a repulsive force, and it is also a uniform repulsive field, although it is similar to the gravitational force, but it is different in the uniformity of the field. The gravitational force increases with the increase of the mass of the object, but the dark energy does not change with the change of the mass of the object, and it is precisely because of this that the expansion of our universe can only expand the galaxies of the universe, making the distance between galaxies and galaxies farther and farther, and the celestial bodies in the galaxy, because the gravitational force they receive is much greater than the repulsion of dark energy, so they cannot be pushed away by dark energy and expand.

Our earth will not expand with the universe, and even we humans will not expand with the universe, which is similar to the fact that our entire galaxy will no longer expand, because everyone has formed a system that binds each other, and the repulsion of the peripheral dark energy cannot separate this system at all.

None of the satellites, planets, and stars in the universe will move farther away as the universe expands, and will only stay in the original solar system.

The expansion rate refers to the expansion rate of the universe as a whole, and this wholeness is very, very small to the point where a very small range of individuals, such as the earth, expands very, very small, so small that it can be considered non-existent, and we cannot feel it at all.

The Earth has been expanding, and this expansion is responsible for its current surface morphology. Look at Google Earth. The expansion of the Earth pushes the continents apart, causing the mountains to rise.

The expansion of the Earth has led to the four distinct seasons of the Earth's climate. Influencing the evolution of life on Earth. According to paleomagnetic studies, the expansion of the Earth is a more scientific explanation for the evolution of paleoglacial remnants near the equator.

<> imagine throwing a stone into the air. Although the rock initially flew upwards (the Earth-rock system was expanding), gravity eventually moved the rock in reverse motion (the system re-contracted) and caused it to fall to the ground. The faster you throw, the higher the stone flies before spinning downward.

Ignoring air resistance, if the speed of the initial stone block is faster than the second cosmic velocity, then it will never fall, but rise, in other words, the Earth-stone system will expand forever, although it can expand faster and slower (the stone will continue to slow down under the gravitational pull of the Earth), but never stop.

In the rock-throwing model, the mass and gravity of the Earth are known, and the main consideration in our calculations is that we need to throw rocks at multiple speeds. In cosmological models, the opposite is true: the rate at which the universe expands is known (by measuring the redshift of distant objects), but we don't know what the mass of the universe is.

If the universe is huge, the slowdown provided by gravity is enough to cause the universe to eventually stop expanding and contract again. Astronomers call this the "Great Squeeze": galaxies and stars are getting closer and closer, the universe is getting hotter and hotter, and eventually everything retracts back to a singularity and we perish.

If the universe is not massive enough, it will expand forever, and the celestial bodies will be farther and farther apart until they can no longer see each other. At the same time, the universe is getting colder, the energy distribution is becoming more uniform, and the entropy is getting higher. The end result is that there are no more energy differences or energy flows in the universe, and the entire universe is as if it were dead, without any phenomena.

This end of the universe is known as "heat death." In short, until the end of the 20th century, astronomers could think of one of these two outcomes of the universe: in any case, the expansion of the universe will be slower and slower due to gravity, and the only uncertainty is whether the expansion will eventually stop and reverse.

The universe is composed of empty space and various stars, the earth is solid, and the strong gravitational pull of the earth's core makes any physical object on the earth squeeze inward, and this squeeze of the earth has reached equilibrium.

The expansion of the universe is due to the action of dark energy in the universe, and this energy itself is a repulsive force, which will increase with the increase of the mass of the object, and it will also change, but the earth is not a dark energy, so it will not expand.

The universe is subordinate to the earth, and the expansion of the universe has nothing to do with the earth.

What is the shape of the universe? This is a very serious scientific and academic problem in astronomy and physics. Because the future fate of the entire universe is at stake.

We can't be as stammering as people did 1,000 years ago. So we have to look at the curvature of the universe. If the curvature of the universe is positive, then the universe, like the Earth, is a sphere.

In the future, then, the universe will definitely begin to collapse under the action of gravity, shrinking again into a singularity. If the curvature of the universe is zero. Then the universe is a flat three-dimensional structure.

<> universe will continue to expand at a constant rate. If the curvature of the universe is negative. So the shape of the universe is more like a saddle.

The expansion of the universe will accelerate. We now have a set of data on the cosmic microwave background. When we look at this data and analyze it, we find that the maximum curvature of the universe is about, which is a very reliable result.

This means that the universe is almost flat. Yes, the universe is neither spherical nor saddle-shaped, but flat, like a square sugar cube. The expansion of the universe is uniform in all directions.

However, the flat universe is accepted by most scientists. But this is still not conclusive. Why is this happening?

Because the universe is too big. Perhaps the range at which we analyze the microwave background is too small. It's like measuring the size of a football field and calculating that the Earth is flat.

According to the observed facts, the expansion of the universe is currently accelerating and does not show a trend of steady expansion. In this case, there is clearly no basis for talking about stopping the expansion. Attributing the accelerated expansion of the universe to dark energy, we have not found any mechanism to reduce it, nor have we found any observational facts to infer that dark energy has decreased in the history of the universe.

A black hole's ability to "gravitationally influence distant objects" is no different from that of ordinary celestial bodies or interstellar matter, nor does it have the effect of being "particularly good at gathering" because it is a black hole. The universe could have emerged from a small-scale space and everything in it emerged from nothingness with zero total energy. You can refer to it:

Where is the singularity of the Great Universe in the universe now?

The universe won't expand forever, and if humans can control their behavior, then it won't. It is due to the increasing number of human actions that cause the universe to expand.

I think it's going to keep expanding, because the universe is constantly producing planets, and black holes are constantly appearing, absorbing power.

Yes, the universe will eventually continue to expand; The reason why it expands is related to repulsion and vacuum.