how long will it take for the sun to burn out?

Answer 1

The Sun is about 4.6 billion years old and 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. In about 5 billion years, the Sun will evolve into a red giant and then a white dwarf, creating a planetary nebula in the process.

Answer 2

The sun will last about another 4.5 billion. It is said to be done with half of its life right now. When the suns life is other it will expand and burn up everything in the solar system. It will then blow up like a super-nova and turn into a white dwarf-and fade away.

Answer 3

Scientists predict it to lose all its Hydrogen fuel by another 4.5 billion to 5 billion years. The sun is about 5 billion years old. it is said to be a middle-aged star.

Answer 4

5.4 bil yrs ... (it's 4.6 bil yrs old right now)
and the sun is expected to turn into a red giant. wat is a red giant, u ask? a mid-sized star (the size of our precious, precious sun) consisting of hydrogen and helium is expected to live for about 10 bil years. at the end of the 10 bils, the star exhausts its hydrogen production... and since the helium has no source to get its energy, it begins to cause fusion which in turn enlarges the celestial body and makes it much much brighter than before. i'm talking about 100 times larger and brighter.

only difference between a star like the sun and a red giant is that the red giant appears to be red and much bigger than the sun...

at the end of the sun's stellar evolution, it is expected to eat up Mercury and Venus, but the Earth might escape as it might get out of its orbit due to loss of gravity.

Anyway, as the sun gets older, it gets hotter and hotter. In fact in a couple of bilion yrs it'll be so hot that the oceans on the earth will boil away (provided that mankind doesn't end up destroying the oceans before the sun does) ... so:
sun getting older
more heat being created
oceans boiling

life on earth will be done way before it's time for the sun to die ..

provided that mankind doesn't end up getting rid of it before all that takes place ..

Answer 5

Scientists expect another 4.5 billion years before the sun dies.

Answer 6

About 5 billion years. Get some sleep. We need not worry about things that will not impact the human race, we will be long gone before that event. ;-)

Answer 7

Only 4 billion yrs.

Answer 8

5-7 billion yrs

Answer 9

All we know are educated guesses, but it wont just fizzle out like a match. It will expand, then shrink. after which, it will explode creating a swirling cloud of gases, that will eventually become another star.

Answer 10

another 5 billion years or so