The mankind will not live without the sun, the sun has burned 5 billion years, how long does its lif

The sun is our most familiar star, on the earth, if did not have the sun, so a lot of plants cannot grow normally. Can say the sun sends out the sunshine that come out is our mankind and whole world Lai Yisheng puts. Be in a long time ago, the sun existed all the time. It burned 5 billion years, why to never go out to now, and likely still does in a steady stream burn ceaselessly go down?

Above all we need to understand the sun first. The sun is a tremendous star, it is located in solar system in the middle of heart, it calculates the sphere that must going up is a special ideal actually. Why so say? Go up in the sun so, its ionic field and magnetic field interweave each other, and the diameter of the sun is earthly diameter probably 110 times, and bulk is the earth almost as much probably 1.3 million times. Quality need not say more more, the quality of the sun is very heavy, be the earth 30 many times.

The sun can such in a steady stream burn to have particular concern with its structural style actually ceaselessly. The chemical composition of the sun is comprised and most material differs on our earth, the great majority of sun quality is hydrogen, 3/4 what held sun mass. Remain four it is helium, and other heavy element wait e.g. oxygen, carbon, iron mere little at 2% . Such forming make the sun extremely easy produce combustion.

In our idea, the combustion of our tellurian object is a kind of chemical reaction actually, it is combustible falls to produce a kind of special oxidation reaction with oxygen in constant temperature, this calls blaze. And the sun burns all the time and combustion of our tellurian combustible is different actually. The combustion of the sun originates nuclear fusion. The core of the sun is in consistently produce nuclear fusion.

Nuclear fusion is hydrogenous element produces a nucleus to get together to transform next the process of the element that it is helium, the meeting in this process sends out a many ray and quantity of heat. The glow that so we see the sun and calorific, it is sun interior actually the glow that reaction of hydrogenous nuclear fusion causes is calorific. The temperature of sun interior is 15 million ℃ , and exterior temperature is higher, be as high as 60 million ℃ .

Of course a day when the sun also has meeting combustion to be over actually. Because the element of sun interior is not endless, when the element of sun interior is all nuclear fusion ends, it cannot continue to give off light gave out heat. The sun is at present just nevertheless prime of life, want to wait for the sun to burn to may wait on 5 billion years even so.