Death of the Sun! Know horrific way our Sun will die

    How and when will the Sun die? Horrific answer revealed.
    By: HT TECH
    | Updated on: Nov 14 2022, 22:42 IST
    Think you know our Sun? Check out THESE 5 stunning facts
    1/5 The Sun is the largest object in our solar system and is a 4.5 billion-year-old star – a hot glowing ball of hydrogen and helium at the center of the solar system. It is about 93 million miles (150 million kilometers) from Earth, and without its energy, life as we know it could not exist here on our home planet. (Pixabay)
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    2/5 The Sun’s volume would need 1.3 million Earths to fill it. Its gravity holds the solar system together, keeping everything from the biggest planets to the smallest bits of debris in orbit around it. The hottest part of the Sun is its core, where temperatures top 27 million degrees Fahrenheit (15 million degrees Celsius). The Sun’s activity, from its powerful eruptions to the steady stream of charged particles it sends out, influences the nature of space throughout the solar system. (NASA)
    3/5 According to NASA, measuring a “day” on the Sun is complicated because of the way it rotates. It doesn't spin as a single, solid ball. This is because the Sun’s surface isn't solid like Earth's. Instead, the Sun is made of super-hot, electrically charged gas called plasma. This plasma rotates at different speeds on different parts of the Sun. At its equator, the Sun completes one rotation in 25 Earth days. At its poles, the Sun rotates once on its axis every 36 Earth days. (NASA)
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    4/5 Above the Sun’s surface are its thin chromosphere and the huge corona (crown). This is where we see features such as solar prominences, flares, and coronal mass ejections. The latter two are giant explosions of energy and particles that can reach Earth. (Pixabay)
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    5/5 The Sun doesn’t have moons, but eight planets orbit it, at least five dwarf planets, tens of thousands of asteroids, and perhaps three trillion comets and icy bodies. Also, several spacecraft are currently investigating the Sun including Parker Solar Probe, STEREO, Solar Orbiter, SOHO, Solar Dynamics Observatory, Hinode, IRIS, and Wind. (Pixabay)
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    The Sun will die! Know when and how. (Pixabay)

    The key source of light and life on Earth is the Sun. However, if you compare it to others out there in space, our Sun is just an ordinary star. In fact, it is quite a small star. And there are about 100 billion stars and that too just in our galaxy, the Milky Way. And just like every other star, the 4.5 billion year old Sun has its expiry date too! But when will the Sun die? And how will it look after its demise? The latest report by ScienceAlert has revealed some shocking predictions about what the final days of our Sun and the solar system will be like.

    It has been assumed that the Sun, after its death, would turn into a planetary nebula, which is a glowing bubble of gas and cosmic dust. In 2018, an international team of astronomers found that a planetary nebula is more like a solar corpse.

    From the observations based on other stars, it is predicted that the Sun will die in another 10 billion years.

    During this period, the Sun will go through several phases. “In about 5 billion years, the Sun is due to turn into a red giant. The core of the star will shrink, but its outer layers will expand out to the orbit of Mars, engulfing our planet in the process. If it's even still there,” ScienceAlert report mentioned.

    But humans may not even be alive by then! Shockingly, the study suggests that humanity only has around 1 billion years on Earth because the Sun is growing in its brightness every billion years by about 10 percent. That rate of increase has the potential to end all life on Earth. Sun, which drives weather, ocean currents, seasons, and climate, and makes plant life possible through photosynthesis will burn down everything! Oceans will start evaporating, while the surface will become too hot.

    "When a star dies it ejects a mass of gas and dust – known as its envelope – into space. The envelope can be as much as half the star's mass. This reveals the star's core, which by this point in the star's life is running out of fuel, eventually turning off and before finally dying. It is only then the hot core makes the ejected envelope shine brightly for around 10,000 years - a brief period in astronomy. This is what makes the planetary nebula visible," one of the authors of the study, Albert Zijlstra explained.

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    First Published Date: 14 Nov, 22:42 IST
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