Of course, there’s a slew of other threats from the Sun before that happens. Once its supply of hydrogen is exhausted, the final, dramatic stages of its life will unfold, as our host star expands. It’s a scary time to think about, especially for any life-human or non-human-that might remain all those years from now. The Sun Life team rose to meet every challenge over the past year. All stars die, and eventually in about 5 billion years our sun will, too. Additionally, rough solar winds from the Sun will beat at the Earth, stripping it of the magnetic field that generates its atmosphere. What they found was an excess (or a 'pile-up') in the population of stars of specific colors and brightness. That expansion will eventually swallow up Mercury and Venus. The sun itself will become a crystal white dwarf in about 10 billion years.' Tremblay's team analyzed the Gaia observations to measure the luminosities and colors of 15,000 white dwarfs within 300 light-years of Earth. Once the core starts to become unstable, the outer layers of the Sun will expand. NASA says the core will become unstable and contract around this time. And roughly 1.2 billion years after it leaves the main sequence, at the height of its glory as a red giant, the center of the helium core of the Sun will become. It will then expand and cool to become a red giant, after which it. It will stop creating heat via nuclear fusion. As our star ends its life, it will swell far beyond its current size, and as it does so, it will transition into a Red Giant. star and will remain so for another 4-5 billion years. When that happens, the Sun will become a red giant. Effectively, the Sun as we know it will have died. As it expands, the star first becomes a subgiant star. At that point, the massive star at the center of our Solar System will have eaten through most of its hydrogen core. Without the reactions occurring at the core, a star contracts inward through gravity causing it to expand. What might be the end point of a star with a mass larger than the sun It can become a white dwarf, a neutron star or a black hole, depending on the mass that remains at the end of the star's life. While the full death of the Sun is still trillions of years away, some scientists believe the current phase of the Sun’s life cycle will end as soon as 5 billion years from now.
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