The sun is a star. All stars eventually burn up and die. What keeps the sun shining brightly year after year i

Answer 1

do you know how big the sun is? it is HUGE!!! as in like hundreds if not thousands of times bigger than the earth. it will take a lot of time for all the gas to burn up.

Answer 2

Hydrogen Fusion
Using intense gravity, heat, and pressure two hydrogen atoms are fused; this reaction breaks apart the two hydrogen atoms giving off a lot of energy. The remnants of the two atoms form one Helium atom.

Stars have huge lifespan; our sun is expected to have a life span of 10 billion years. We had better find a way to get out of the solar system because we only have 5.43 billion years to go.

Our sun Sol is a G2 Main Sequence Star; it is too small to every turn into a black hole and it is not large enough to go nova either.

5 Million years from now our sun will run out of hydrogen fuel, when that happens it starts burning other elements on the periodic table working its way up the chart until it reaches Iron. A star cannot sustain a fusion reaction with iron. When that happens the sun will blow up into a Red Giant. It will grow to a size larger than our orbit destroying the inner planets. It may push Earth to a new farther orbit, but it will have boiled off all the air and water before then.

When it has fused all the fuel it can then it will explode. Sending part of its matter off to form a planetary nebula (similar to the Asteroid Belt. It will then collapse onto itself forming a White Dwarf and slowly cooling off.

Sun: http://en.wikipedia.org/wiki/Sun

Answer 3

Stellar furnaces are fueled by a process of fusion. Hydrogen becomes helium, and the process produces energy, which is given off as solar heat and light across the electromagnetic spectrum.

The sun burns through an enormous amount of hydrogen every second, but because of it's mass, it has enough nuclear fuel left to continue as it is now for another 4 billion years. After that, it will have ran out of hydrogen, swell up to a red giant as it uses helium as fuel, and within half a billion years, die in a nova and settle down to become a white dwarf star.

Answer 4

We cannot compare the sun to stars around. As you know that stars are of gacious nature and burns up and vanished. But
the sun shinning brightly year after year. Because sun is not made up of gasses alone, other minerals are also present like our earth. Gradually it may cool down like our earth, After billions of years.

Answer 5

Our sun's energy source is in its core where immense amounts of the element hydrogen under great pressure and temperature are continuously converted to helium. This is called 'nuclear fusion' and is basically the same process that happens in a hydrogen bomb. The sun's core is essentially a 250-thousand mile wide continuous hydrogen bomb that 'burns' about 600-million metric tons of hydrogen per SECOND!

Answer 6

The sun will burn out in approximately a billion years!

Answer 7

the sun undergoes fusion rxns. fusion rxn r dos in wish any 2 smaller elemnt combines ( not reacts !) together 2 form another elment emitting large amount of energy.

the sun contains a very,very vast amount of hydrogen dat is continously undergoin fusion 2 become helium. wen all the hydrogen is finisd den it will die out.

astronomers say only half of da hydrogen has finisd and the sun is in the middle age of its life

Answer 8

Go the www.nasa.gov for a better explanation than my meagre education allows. As long as certain hydrogen molecules keep colliding Our Sun is good for another fifty to a hundred thousand years. Peace.

Answer 9

It has plenty of fuel left in its core.

But it too will eventually burn up and die ... in about 5 billion years (in other words, the sun is about midway in its life cycle).

Answer 10

The sun is relatively young, and its nuclear reactor is balanced and it has plenty of fuel (hydrogen) so it will keep burning for millions if not billions of years.