Sun’s Last Day: There are many arguments and predictions about when and how the Earth will end. Have you ever wondered what the Sun’s doomsday will be like? The answer to that question is that the Earth’s star, the Sun, will not end anytime soon. But like any star, the Sun will have an end time. An article published by Space.com provides a scientific explanation based on studies to date to answer the question of how the Sun will end.
Scientists believe that the Sun will disappear when the star runs out of hydrogen. When the hydrogen runs out in about 5 billion years, the Sun will begin to disappear. Scientists explain that the Sun will then expand into a red giant and is likely to swallow the planets, including Earth. But this is not something that is going to happen so quickly. The Sun’s red giant phase will last about 1 billion years.
After this phase, the Sun will shed its outer layers and form a planetary nebula. That is, the researchers say that the life of the Sun will end as a white dwarf star. When all the burning nuclear fuel is used up, the Sun will become a dead star called a white dwarf. Then the temperature in the Sun will gradually decrease and cool down. All low-mass stars end in the same way. Although the Sun is now millions of times larger than the Earth, when it becomes a white dwarf, it will only be as large as the Earth.
The remaining inner core of the Sun will contain carbon and oxygen. Scientists also say that these will be the remains of the helium burning. If you ask what will happen to the Earth when the Sun turns into a white dwarf, or at the end of the Sun, there is an answer to that too.
When the Sun runs out of hydrogen, the Sun expands into a red giant. At this stage, the hydrogen around the Sun will be converted into helium. As a result of these processes, scientists warn that the Sun will double in size and may swallow the planets, including Earth. This excessive heat generated in the Sun will cause the Earth’s surface temperature to rise. The oceans and other bodies of water will evaporate, making the planet uninhabitable.
The increasing heat will also cause atmospheric gases to spread into space. Such changes could endanger the existence of life on Earth. The increasing heat and radiation could lead to the extinction of most living things. Apart from Earth, the same effects will occur on other planets in the solar system, especially Jupiter, Saturn, Uranus, and Neptune. The end of the Sun will also be the end of the solar system.
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