Fusion and Radiation
No
The answer is simple: gravity.
Planets move away by gravity not holding it together and also gravity holds planets together
Gravity inside the Earth plays a crucial role in holding the planet's layers together and creating pressure that helps maintain its shape and structure. It also influences the movement of materials within the Earth's interior, such as magma and tectonic plates.
No. Gravity is an attractive force, meaning it acts to pull things together.
Newton discovered how the world was held together when the memorable event of the apple falling on his head helped him discover the force of gravity. He then concluded that gravity pulls together all the particles of Earth, therefore holding it together.
Gravity is the force that causes objects in space to be held together. It is a fundamental force of nature that governs the motion of celestial bodies, keeping planets in orbit around stars, and holding galaxies together.
Temperature and/or pressure cause the bonds holding particles together to weaken.
Gravity is the force that attracts all matter to other matter. It is responsible for keeping the planets in orbit around the sun and holding galaxies together.
The sun is held in place by its own gravity, which creates a delicate balance between the outward pressure from nuclear fusion in its core and the inward pull of gravity. This balance keeps the sun stable and prevents it from expanding or collapsing.
In simple terms... gravity ! Gravity is holding the air close to the surface of the Earth. The further away you are from the surface - the lower the gravity - and thus the lower the air pressure.
When you are on earth the gravity is holding down or putting pressure on your vertebrae and then when you are in space i isn't putting any pressure on your vertebrae, so it stretches out an inch or two.