If the Earth were a cube, what would happen to the Earth?

If the Earth is a cube and is stable in the universe, there is something wrong with the laws of physics. The breaking of rotational symmetry means that the conservation of angular momentum no longer exists, Kepler's second law no longer holds, and our common concept of "moment" in the principle of leverage will also be problematic, because the rotational symmetry of space has been broken, so the position of the lever must be determined in order to be studied.

The break of rotational symmetry also means that many laws of physics may be anisotropic, for example, the radiation of sunlight will be very different in all directions. At this point, all directions in the space are no longer isotropic, but the x, y, and z directions will be clearly distinguished. At this time, all the laws of physics will depend on the specific direction and position, and will not only change the shape of the earth, but also affect all other stars, thus greatly reducing the universality of science.

When you walk to the edge or corner, you feel like you're going uphill. The farther away from the center, the steeper it feels. Even if you look back at your shoulders, the ground looks flat, but it feels sloping.

This is because gravity pulls towards the center of mass – in this case, the center of the cube. In the middle of one of the faces, your head, feet, and the center of the cube are lined up vertically. Gravity falls directly.

Near the edge, the center of the cube is at an angle of 45 degrees to the ground, and at the corners it is about 50 degrees.

Assuming that the earth is square, then there will be a big difference in the gravitational force around the earth, and there will be a big difference in the gravitational force between flat places and angular places, and the earth's atmosphere will be unstable. And the horizon may not be visible, it will be quite strange in the corner sections, etc.

Even if the Earth is spherical, it will develop into a sphere over billions of years of constant rotation. The sharp points on the earth's surface are easily destroyed by external forces and gravity, which also makes the earth tend to be spherical. Not only is the Earth round, but most of the celestial bodies in the universe are also round.

Have you ever seen round droplets of water on a lotus leaf? Liquid matter will inevitably shrink into a sphere under the action of its own gravity, which is the most basic physical law in the universe. Only by shrinking into a sphere can the gravitational equilibrium of this object be reached.

In other words, when the gravitational force inside the object is balanced, it becomes spherical. Because the sphere is the most perfect and stable. Perfection is what it means.

For example, on a microgravity space station, water automatically shrinks into a sphere as soon as it comes out. At the beginning of its birth, the Earth was also a hot liquid planet, so it naturally contracted into a sphere under its own gravity. Even if a celestial body is large enough, even if it is composed of solid matter, it will gradually collapse into a spherical object under its own gravity or gravitational pull.

If the earth says that it is a cube, then its temperature change will not have the poles slightly flattened, the equatorial slightly drummed ellipsoidal earth, then the change is obvious. That is, if the earth is square, then it is its climate that is most affected.

If the Earth is cube, then the gravitational force on the Earth becomes uneven, the distance from the center of the Earth is not the same in every place on the Earth, and the gravity at the center of each face of the cube is obviously the strongest. If this is the case, then the weight of humans will vary depending on where they stand on the planet. And there will be no exact standard for measurement in daily life, which may lead to disorder.

Then the earth's climate will also be greatly affected. If the light is the same on the same plane, then the earth will not have a climatic zone such as cold, tropical, and temperate. Because of climate change, the species on Earth should no longer show biological diversity.

If the earth were a cube, the earth would not change very much, because of gravity, everything would still be the same as before, except that there would be four huge peaks.

The first point: natural disasters will increase significantly, and natural disasters such as tsunamis and tornadoes will become more frequent.

The second point: the earth will have 8 highest peaks, because the square has 8 corners.

The amount of gravity that varies greatly from place to place. This will affect the normal life of human beings. Not suitable for human survival.

The Sun is the mass center of the entire solar system, and it is also the largest, occupying the mass of the entire galaxy, with a diameter of 109 times that of the Earth, a mass of 330,000 times that of the Earth, and a volume of about 1.3 million times that of the Earth.

If the Earth becomes the size of the Sun, the gravitational pull will be even greater than that of the current Sun, and the entire solar system will be redistributed due to the change of the Earth.

The Earth may no longer revolve around the Sun, and the Moon will be torn apart by the Earth's tremendous tidal force, and there will be no Moon again. The orbits of Mercury, Venus, and Mars change the most dramatically, because the Earth's gravitational pull will completely resist the Sun, and over time it will fall into the Earth's gravitational range and orbit the Earth.

As for what will happen to the other planets on the periphery, it is impossible to guess due to the complex situation of the solar system at this time, but one thing is certain, it is by no means the current orbit, and they should be closer to the earth.

It's not interesting to talk about other planets, let's talk about human beings, at this time there are no other creatures crawling on land on the earth except for some microorganisms and bacteria, and birds want to fly? Dream on.

Humans will be crushed into "meatloaf" due to the huge gravity of the earth, after all, the biological structure of human beings evolved from the original foundation of the earth, not on this giant earth. On the surface, anything or a building that is a little tall will be "prostrate on the ground".

If humans had evolved on this giant earth in the first place, they would have been shorter and stronger in bones than they are today, like turtles. From this point, it can be found that if aliens live on giant planets, they may never be able to enter space!

If the volume becomes larger and the density does not change, then the mass will also increase. Then the gravitational pull becomes larger and collides with other planets or the sun. Even if there is no collision, the huge gravitational force will make people unable to withstand their own gravity, and then they will be flattened.

If the volume becomes larger and the mass remains the same, then the density becomes less. It's impossible to guess at this situation for the time being, because there are countless situations in which the geology keeps the density unchanged even after the volume increases, but it is estimated that none of them are good.

I think if the Earth becomes as big as the Sun, then the Earth is likely to change dramatically.

If such a situation happens, then it can be very hot on Earth. It will also leave many species of plants without an environment to live in.

The earth's environment will become more harsh, the earth's temperature will be particularly high, unsuitable for human survival, and the earth's life is likely to become extinct.

The population of the earth will increase, the development of the earth will get better and better, the earth may decline, and the earth may also be destroyed.

Q: Hello, my name is T and I'm in 6th grade. I wondered what the weather would look like if our Earth was pinched into a cube.

A: That's an interesting question, and this week I discussed your question with my friends from the School of Astronomy at my university, and we tried to explain the possible effects of the "cube planet". Living on a "square star" is really weird for those of us who are used to the life of a "round star".

An imaginary cube Earth with a view of our continents and clouds.

A large part of what the weather will look like on the square depends on how the cube rotates. You can take a look at this chart I made. If it rotates on the axis of the center points "above" and "below", then the weather "above" and "below" should be similar to the Earth's polar climate, while the weather on the "side" is closer to the equatorial weather.

In this way, there would be no temperate regions on Earth like Europe and North America. If the axis of rotation of the "square star" were replaced by two opposite vertices, then each face would have a temperate climate, and there would be no polar and equatorial weather regions.

I wonder how the ocean on this "square star" exists in your imagination? Actually, there could be no ocean on a square star (because that's liquid). So your "square star" looks like a cube with an ocean in the center of each side, right?

Those six vertices are huge mountains in the eyes of the inhabitants of the "square star"! I think that at the junction of the two faces, something even more bizarre will happen. The wind coming from the surface of the earth will suddenly soar into the sky due to the change in the direction of the ground!

I'm pretty sure there's a good chance that these borders will form some strange weather oddities.

Imagine a square globe with the North Pole at the top and the South Pole at the bottom.

Like the ocean, the atmosphere "needs" to be a sphere. Let's assume that if the atmosphere rises 1,000 kilometers (and the Earth is still a sphere), then this is a sphere with a radius of 6,400 kilometers, 1,000 kilometers, and 7,400 kilometers, and that's the correct result. If a cube of the same volume as the Earth has a side length of 10,000 kilometers, then the distance from the apex to the center of this cube is 8,700 kilometers, and this altitude is definitely about to break out of the atmosphere!

Anyway, this question is really cool! I hope my answer satisfies your curiosity. I probably didn't take into account all the possibilities, and I didn't add all the conditions to the assumptions (e.g., the ocean and atmosphere can't wrap around the surface of the cube; The climate is not necessarily the same everywhere on the same side, etc.), but I hope my answer will be of some interest to you.

Of course, this is not such an unusual problem, and we often mention this situation in some scientific experiments. Sometimes we find some questions strange because it is difficult to give a completely correct answer in reality, and perhaps the answer given, although correct, is difficult for us to accept (but it is more interesting).