Will the Sun go Nova one day?

I have been wondering this for quite some time, so I had decided to post this question here.

My question is will the sun go Nova one day? If so, does anyone know when it will go Nova and how many planets will it destroy or demolish in it's path? I know the sun is really big and is capable of destroying a few planets (including Earth) after it had gone Nova. Please be honest with this as much as you can since I don't like guesses, so don't guess - be honest.

11 Answers

  • 1 decade ago
    Favorite Answer

    If the sun went nova it would destroy every known planet in the Solar System.

    But the sun is not massive enough to go nova. In 4-5 billion years the Hydrogen fuel in the sun's core will have all been converted to helium. The core will contract and heat up, and upon reaching 100 million degrees Celsius, Helium fusion will begin. The outer layers of the sun will expand to about Earth's orbit, becoming a red giant, but the loss of mass early in this phase will mean that Earth will probably move to a wider orbit, and not be engulfed as Mercury would be and Venus would probably be. Although the expansion cools the sun somewhat and makes it emit redder light, the heat emitted will be much higher than today, and despite being further out, Earth's oceans will boil away, and become like Venus now, until the atmosphere, too, is lost to space.

    The red giant phase will be short lived, and eventually the outer layers will puff away due to thermal pulsations, forming a planetary nebula, leaving the core a tiny white dwarf that will slowly cool and dim.

    There will be no nova here, but the outlook for Earth is not good. Fortunately, we'll all be extinct long before the red giant phase.

  • Anonymous
    6 years ago

    Sun can well can Nova

    Nova=planetary nebula

  • 1 decade ago

    No it won't go nova, not enough mass nor is it part of a binary system. It will go into a red giant phase though, as the hydrogen is used up and it begins to fuse heavier and heavier elements. The earth will for sure be gone but it probably won't reach as far as the orbit of mars. Near the end the sun will blow off most of its mass in a series of convulsions as it nears the point of fusing elements into Iron. Fusion will stop there and all that will be left is a white dwarf that will eventually cool and go dark.

    Don't worry, the Sun is only middle aged so you have a couple of billion years, at least, before you have to worry about it.

  • 1 decade ago

    Nuclear astrophycists currently predict that the sun will continue to convert hydrogen to helium as a main sequence star for another 5 billion years or so. When it runs out of hydrogen, it will collapse and heat up until it becomes hot enough to fuse helium nuclei to form carbon. This reaction produces more energy than the H --> He reaction it is currently undergoing, so it will swell out to about the orbit of Mars. That means the eart will be orbiting INSIDE the sun!

    When the sun runs out of Helium, it will collapse again, this time it will Nova, but the Earth and Mercury will already have been disintegrated by the red giant phase.

    We should probably work to have an escape plan worked out before the red giant phase happens.

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  • Brant
    Lv 7
    1 decade ago

    Just a comment on some of the answers. There is a difference between a nova and a supernova. The sun will probably nova, which just means it increases dramatically in brightness because of changes in the interior processes and the balance between contraction and expansion. The sun will not supernova, though.

  • Anonymous
    1 decade ago

    The Sun will not go Nova, but it will shed of its outter shells. When this happens it will more than likely wipe out all the inner planets, it will also provide enough energy to ignite Jupiter and Saturn, so that they begin to burn like our Sun. This has always been a mystery as to why the planets Jupiter and Saturn have the ability to have made small stars, but never did.They are classified as brown dwarfs, and emit more heat than they absorb, so it still remains a mystery.

  • 1 decade ago

    Our sun is a main sequence star it is too small to become a super nova, eventually our sun will expand to envelope the entire solar system then it will contract to become a dwarf star and cool into a lump of ash.

  • eri
    Lv 7
    1 decade ago

    No. The Sun is not nearly massive enough to explode. It will expand into a red giant, engulfing the inner planets (possibly out as far as Mars), and then will puff out it's outer layers into space, leaving a white dwarf star behind that slowly cools.

  • 1 decade ago

    not likely as you need at least an equivent of about 4 or 5 solar mass to have a star to go nova. the sun is most likely to shrink and form a dwarf and perhaps finally a neutron star.

    God bless,


  • I don't think so, the sun is mideum sized star, it will not becomes a nova but it will goes dark when it runs out of power. Other stars that larger than the sun will become Novas and Supernovas, when they run out of power, they will exploded and the rest will become blackholes.

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