When would the Sun stop burning? What would happen then? Would it be the end of the world?

Question

Suppose humans were still around, how could they avert this disaster to survive?

Answer 1

The Sun's current age, determined using computer models of stellar evolution and nucleocosmochronology, is thought to be about 4.57 billion years.[5]

The Sun is about halfway through its main-sequence evolution, during which nuclear fusion reactions in its core fuse hydrogen into helium. Each second, more than 4 million tonnes of matter are converted into energy within the Sun's core, producing neutrinos and solar radiation; at this rate, the Sun will have so far converted around 100 Earth-masses of matter into energy. The Sun will spend a total of approximately 10 billion years as a main sequence star.

The Sun does not have enough mass to explode as a supernova. Instead, in 4–5 billion years, it will enter a red giant phase, its outer layers expanding as the hydrogen fuel in the core is consumed and the core contracts and heats up. Helium fusion will begin when the core temperature reaches around 100 MK, and will produce carbon and oxygen. While it is likely that the expansion of the outer layers of the Sun will reach the current position of Earth's orbit, recent research suggests that mass lost from the Sun earlier in its red giant phase will cause the Earth's orbit to move further out, preventing it from being engulfed.[6] However, Earth's water will be boiled away and most of its atmosphere will escape into space.

And if the humans will have found another source of water they might survive( 9% chances)

Answer 2

First of all, the Sun isn't "burning." It generates its energy through nuclear fusion, which is an extremely slow process, so that we don't expect significant changes in the Sun's output for at least 5 billion years. That's when the Sun will run out of hydrogen to convert to helium, and it will begin to grow larger, becoming a red giant and eventually engulfing the inner planets. But that's a long way off, and there are far more pressing problems right here on Earth now which are far more likely to bring about the end of the world.

Answer 3

right here is the element with the "2012 end of international" In 2012 the international won't end till and easily till there is cosmic destruction. there's a threat that Nuclear destruction can wreck maximum existence on earth yet no longer wreck the international, shop that in the time of strategies. Flooding can eat lots of the international on occasion despite the fact that it gained’t take place so without warning. The predictions following the Mayan calendar are fake and that i will aid you already know why. The Mayan civilization existed greater then 5000 years interior the previous. in view that then the earth has moved farther from the sunlight. This relaxing actuality has an important impression on earth time. With that strategies it extremely is secure to declare that element 5000 years in the past and time now are thoroughly distinctive. So in reality the expected doomsday 2012 has already surpassed if we've been to stick to the Mayan's 2012 might have surpassed. Time and Dates are all screwed up and the rotation and distance from the sunlight are actually not integrated. somebody has some genuine math to do up as NASA. the reality regarding the tip of the international is that it will take place and there is not any thank you to foretell it till back it extremely is that of a cosmic action.

Answer 4

Just like running out of oil, its not going to be one second where all of a sudden the sun is out of fuel. Instead, it will gradually run down on hydrogen in a few billion years. At first, the sun will cool and shrink. Then it will begin to use helium instead and the surface of the sun will get much large, engulfing earth. If we are will around by then,we'll either be ready for it (full earth evacuation) or go extinct. By then we'd probably have the technology to just move earth farther from the sun so it will survive.

Answer 5

Well, you can relax. Don't buy that "sun burning out" insurance.

It'll be a few years...ok... a few million years. The consensus is the sun will burn enough of its mass that its gravity can no longer hold it together in a tight ball. The thing will expand to include the orbits of Mercury, Venus, Earth, and maybe the asteroid belt..

As it expands, the radiation and heat will cook everything on Earth... long before it gets this far out.

Anyway, after a while it will burn itself down further and all that will be a cinder, that will glow for another few million years.

But life on earth ill have been destroyed long before.

But more than likely, we'll kill each other, or over-populate, over-pollute, or over-develop ourselves out of existence before anything like that happens.

Answer 6

About the only thing we could do is leave... When the sun runs out of fuel, it'll swell to be a Red Giant. The outer atmosphere of the sun will engulf Mercury, Venus, and Earth, and raise the temperature on Mars to above the boiling point. The three inner planets will fall into the core of the sun, and be crushed.

Answer 7

the sun will stop burning in about 5-6 billion years
the sun will get larger and larger until it expands half way between earth and mars (approx.)
yes it will be the end of the earth, because it will be consumed by the sun, but everthing will die out before hand, because of the heat of the enlarging sun.
i doubt humans will be around by then, if they were, they would have left a long time ago, due to advancements in technology, and they would have found a new planet

Answer 8

In about 5 billion years, the sun will use up its hydrogen and burn helium. As that happens, it will expand. As it uses up its helium and other heavier fuels, it will be large enough to swallow Earth or even Mars. After that, it will shrink and become a white dwarf.

Answer 9

Well before the sun burns out we'd have another problem to worry about: In a few million years (I'm not really sure how long I just know it's a long way off) the sun will enter the next phase in its life cycle and become a red giant. When this happens the sun will expand and the Earth will actually be inside the sun.

Answer 10

It would be the end of the World ,unless another Sun Was newly kindled.
As it had been said " there are many Stars out there"