Why almost all objects in space tour? Science answers!

By observing the night sky, we can see many celestial bodies, such as stars, months and distant planets. Despite many differences, Most cosmic objects in space share a common feature: round shape. After all, why almost all objects are in space tour?

The world is a almost global -shaped planet like others, including outer planets observed by all solar system and spatial telescopes. The same applies to a few months and even for stars that shine in the sky. But, Asteroids and comet stars are examples of celestial bodies that are not in the same way.

Despite the differences in large size, round shape is a feature that takes place in the universe. According to astronomers and other experts on the subject, This is mainly due to the effect of gravity on the mass of these celestial bodies.

“Gravity is the force that keeps us on the planet and attracts us intensively to its center. As long as it has sufficient size, it has a similar effect on everything that floats from the cosmos. All objects in the universe are subject to their own gravity forces. This is one of the basic forces of our universe. Evi The European Space Agency (ESA) explains in an official publication.

https://www.youtube.com/watch?v=k1ucselvnvc

Gravity is so strong that it shows a fixed power in the mountains such as Fuji Mountain and Everes. If they reach excessive heights, the weight of the mountain can cause erosion and collapse; like thisgravity sets a limit to the height of the mountain.

Despite the round shape of these objects, most of them are not perfect global. Let us use the world as an example: When analyzing the shape, scientists found that it was an oblete spheroid, ie it was a little straightened at the poles due to the centrifugal force produced by rotation.

This is not a special phenomenon of our planet – eight bodies of the solar system have this feature. In turn, the sun is almost perfect, but still a slight straightening, almost perceived.

Why do most celestial body rolls?

First of all, we should say that most objects in space are not exactly round. Like the Earth, they have almost global shape with flat poles. In large scales, this difference is almost perceivedSo much so that through spatial probes and telescopes, they look perfectly round when we observe the shape of the world or other celestial objects.

Planets, months and stars do not have shapes such as pyramids or cubes, because they draw gravity masses towards the center. Gravity exceeds the hardness of the material and strengthens this round shape, which is a phenomenon known as hydrostatic balance.

Rotation also causes slight flattening at the poles, so Oblate SFEROID format instead of a perfect sphere. Small objects, such as asteroids and comet stars, have not enough gravity for them to appear-these rocks generally have irregular shapes.

The idea is that it only allows a global shape, a planet, the moon or the surface of the star to be at a balanced distance from the center. Explains this reason Since this force moves evenly in all directions, it is not significantly ‘drawn’ by gravity.

Gravity can only have a more irregular shape, such as a polyhedron, for example, if it has only worked in some certain directions. However, we know that this does not happen because gravity always moves towards the mass center, resulting in a round form.

“The severity of a planet is withdrawn from all sides. Gravity is drawn from the center to the edges like the rays of a bicycle wheel. This makes the general form of a planet into a sphere with a three -dimensional circle. Nas NASA explains in an official statement.

Thus, a celestial object takes a global shape, There must be a minimum amount of mass. However, it also depends on the composition of the material.

For example, we can compare rocky objects with other iron other compounds. While Rocky can reach this uniform with less seriousness, those created by pure iron will need a much larger mass, so that gravity hardness overcomes hardness.

For this reason, Smaller asteroids do not have a round shape because their intensity is not enough to overcome the resistance of the material.

How to roll an object?

When Big Bang occurred about 13.8 billion years ago, it gave birth to the universe full of basic particles. Over time, these particles formed the first hydrogen and helium atoms grouped into huge clouds. Gravity caused these clouds to collapse and formed the first stars.

In one of these clouds, The sun rises, surrounded by a gas and dust disc. Particles on this disk collided and combined to create the first plates that continue to grow slowly – the plates are like ‘babies’.

While these plates continue to accumulate mass, Gravity allowed them to offer a round form. This was the process of the formation of eight planets and thousands of other celestial bodies of the solar system.

Gravity is responsible for the phenomena shaping the universe, which is an effect rising from the shape of the planets to the movement of galaxies. Do you want to know more? Understand how Newton came to the idea of ​​gravity. Until next time!