The Sun has already lived about half of its life and will not stop in the next 4.5 billion years, says Vladimir Kuznetsov, director of the Institute for Earth's Magnetism, Ionisphere and Broadcast Radio Waves of the Russian Academy of Sciences.
According to Kuznetsov, the expected life expectancy of the Sun is about 10 billion years. The main star has already lived 4.5 billion years, so he left half of his life.
"The Sun is in the Mainstream of Star Evolution … (…) The time in which a star remains in it is the longest in evolution because it occupies 90 percent of its life," Kuznetsov said in conversation with Sputnik.
The scientist emphasized that the thermonuclear reaction – which is the main source of solar energy – is constantly present in the star intestines.
Kuznetsov believes that solar energy will change when all the hydrogen in the Sun burns and when the helium and other heavy chemical elements are destroyed. According to experts, these processes will take place in approximately 5,000 million years and will lead to the sun spreading on orbit Venus.
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As a result, the star will absorb the nearest planets, burn the earth and begin to cool, becoming a white dwarf with a radius of only 10 kilometers and colossal density. Planets like Mars, Jupiter, and Saturn will orbit around this inert dwarf star.