Why does the sun shine? Detailed answer

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Why does the sun shine? Detailed answer

Big encyclopedia for children and adults

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Why does the sun shine?

It's hard to believe, but the stars that shine at night and the Sun that shines during the day are the same.

The Sun is also the closest star to the Earth. We know that life depends on the Sun. Without solar heat, life would not have arisen on Earth. Without sunlight, there would be no green plants, animals, humans.

The Sun is over 172 km from Earth. The mass of the Sun is 000 times the mass of the Earth. But, interestingly, the Sun is not as solid as the Earth.

Proving this is very simple: the surface temperature of the Sun reaches 6000 °C. At this temperature, any metal or stone turns into gas, so the Sun must be a ball of gas!

In the past, scientists believed that sunlight and heat were the result of combustion. But the surface of the Sun has been hot for hundreds of millions of years, and nothing can burn for that long.

Today, scientists believe that the Sun releases heat as a result of processes similar to those that occur in an atomic bomb. The sun turns matter into energy.

This process is different from combustion. During combustion, one form of matter passes into another. In the transition of matter into energy, a minimum amount of matter is needed to produce a huge amount of energy. Twenty-eight grams of matter releases enough energy to melt more than 1 million tons of rock.

So, if science is right, the sun shines because there is a constant transformation of matter into energy. One percent of the Sun's mass is enough to keep it hot for 150 billion years!

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

What literary work is wrongly attributed to Hemingway?

Hemingway is often credited with writing the shortest poignant story: "For sale: baby shoes, never worn." The writer allegedly made a bet with friends that he would write a finished work of six words, and won 10 dollars from them. In fact, actual advertisements for children's shoes or strollers appeared in American newspapers long before Hemingway's writing career began. Various authors have published articles discussing such announcements, describing them as short stories, and the story of Hemingway's bet did not appear in print until the 1990s.

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