How Stars are Formed ? Why Do Stars Shine ?

 

How Stars are Formed ? Why Do Stars Shine ?

How Are The Stars Formed? Why Do Stars Shine? You can find answers to questions such as:

What are Stars ?

You may know stars as bright celestial bodies in our night sky. They are notable for being self-illuminating. But one star can also be observed during the day: the sun.

Stars are made up of huge clouds of gas. Mass appeal plays an important role here. It makes crowds attract each other. The greater the mass, the greater the gravitational force. Due to the gravitational force – that is, gravity – gas clouds become more and more dense and form large balls. There's a lot of pressure inside. It allows the gas particles to coalesce. Among other things, a lot of energy is released in the process when the star radiates outward in the form of light.

How Are Stars Formed ?

Stars are mostly made up of hydrogen. You can find it in space in the form of large clouds of gas. Star formation begins when gas particles begin to condense. This happens because of gravity, that is, the gravitational force responsible for the attraction between two masses.

As soon as many hydrogen particles accumulate in the center of the cloud, more gas particles are attracted even more. This is because the interior of the cloud is getting heavier due to the large number of particles. This increases the gravitational force acting on the outer hydrogen particles.

The more the gas is drawn in, the heavier the center of the cloud and the greater its attraction to other particles. Over time, the cloud turns into a ball of gas. Due to the high mass of the hydrogen particles being pulled into the sphere by the gravitational force, the pressure there increases.

As the pressure increases, the temperature in the core of the hydrogen sphere also increases. The mass pressure here is so great that temperatures rise to about 10 million degrees Celsius. At these temperatures, the hydrogen particles begin to fuse together. This releases radiation that opposes the gravitational force. Therefore, the ball is no longer compressed. That's when you start talking about a star.

Good to Know: Compression of the gas cloud usually takes about 10 to 15 million years. Frequently, not only is a star formed, but hydrogen particles collect in various parts of the cloud. This is how double or multiple star systems are formed.

Why Do Stars Shine ?

The pressure and temperature in the core of the star are so high that the hydrogen particles fuse with each other. Strictly speaking, a process that you call nuclear fusion takes place because of the high energy.

In this way, four hydrogen particles become one helium particle. The process releases a lot of energy, which the star emits in the form of radiation. In the case of our sun, this is primarily visible light, but also radiation in the ultraviolet (UV) and infrared range.

So the fusion of hydrogen particles releases energy that you can see in the form of starlight at night and sunlight during the day.

By the way: the stars themselves do not flicker. The glows you see when looking at the stars are created by Earth's atmosphere. By refracting the light of the stars, it gives the impression that their brightness has changed.