At the end of the sun life it will become what
AT THE END OF THE SUN LIFE IT WILL BECOME WHAT SERIES
Over the course of the next 20 million years, the Sun will then become unstable and begin losing mass through a series of thermal pulses. Once the Helium in the core starts fusion, the star will then shrink but gain luminosity. About one billion years after the Sun tries to swallow Earth, the red giant will undergo a process called Helium flash where huge amounts of Helium is fused to Carbon in a matter of minutes. However, this will not be the case with our Sun due to the fact that it is simply not massive enough. When people think of stars dying, what typically comes to mind are massive supernovas and the creation of black holes. It is calculated that the expanding Sun will grow large enough to encompass the orbits of Mercury, Venus, and maybe even Earth. Then, our star will enter the red giant phase and swell up much faster. The helium outside its core will start to fuse in a shell around the dead core. With its hydrogen exhausted in the core, its inner helium ash that has built up there will become unstable and collapse under its own weight. This will begin in approximately 6.4 billion years at which point the Sun will exit the main sequence stage of its life. One day in the distant future the Sun will run out of hydrogen fuel. Under these conditions, life as we know it will be unable to survive anywhere on the surface of Earth.
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This will trigger a moist greenhouse effect here on Earth that is similar to the hellish Venus environments that we see today. One billion years from now, the Sun will be 10% brighter than it currently is. However, this process cannot last forever since there is a finite amount of hydrogen in the core of the Sun. This means nuclear fusion reactions in its core fused hydrogen into helium. Like most stars in our universe, the Sun is on the main sequence stage of its life. And just a few million years later, it settled down into its current form. The Sun spent about 100,000 years as a collapsing protostar before temperatures and pressures in the interior ignited fusion at its core.
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The ball at the center would eventually form the Sun while the disk of material would form the planets. Most of the material ended up in a ball at the center while the rest of the matter flattened out into a disk that circled around it. As the regions pulled in more matter, conservation of angular momentum caused it to begin rotating while increasing pressure caused it to heat up.
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From this collapse, dust and gas began to collect into denser regions. Then, about 4.5 billion years ago the cloud collapsed. The Sun and all our planets in the solar system began as a giant cloud of molecular gas and dust. The life cycle of the Sun began roughly 4.6 billion years ago and will continue for almost another 8 billion years when it will have depleted its supply of nuclear fuel and collapse into a white dwarf.