2007-01-04 05:40:58 · 11 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
about 4.57 billion years.
in 4-5 billion years, it will enter a red giant phase, causing it to expand and get closer to the earth, possibly engulfing the planet, and if not it will most definitely boil the water and atmosphere off the planet.
check out this link: http://en.wikipedia.org/wiki/Image:Sun_Life.png
2007-01-04 05:55:52 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Well its hard but its around 4.7-5 billion years. The reason for this is really hard to put in words so I'll tryy my best. the reason the sun will burn out is because all that chemical reaction within it causes (eventually) a negative cycle. This means that the sun will use as much as 5X the amount of fuel to produce those rays. That means that once those rays come to us that heat will be a bit more than 40-50 degrees hotter than the current millenia's rays. Imagine going outside in summer at 95 degrees with an added 50 degrees! That gives you around 140 degrees of temperature, plu with the possibility of ozone layer being dissolved by then, I'll give it and extra 20 degrees.
2007-01-04 13:51:32 · answer #2 · answered by oathkeeper626 2 · 0⤊ 0⤋
Most scientist expect it to last between 4 and 5 billion years. But as the sun dies it will expand to a size so large that it will actually fill the space where Earth is now. Then it will explode and become a white dwarf.
2007-01-04 06:07:07 · answer #3 · answered by Should be Working! 4 · 0⤊ 0⤋
A few billion
2007-01-04 05:42:59 · answer #4 · answered by Gene 7 · 0⤊ 0⤋
can't be estimated. How much nuclear fuel remaining in sun is only estimated by our scientists.
2007-01-04 06:09:12 · answer #5 · answered by Dhiman B 2 · 0⤊ 0⤋
4 billion or more
2007-01-04 05:42:46 · answer #6 · answered by me 3 · 0⤊ 0⤋
Untill God says it is over
2007-01-04 05:47:25 · answer #7 · answered by prettyrick72324 1 · 0⤊ 0⤋
5.5 billion years.
2007-01-04 05:44:38 · answer #8 · answered by 7 · 0⤊ 0⤋
as many as god allows it
2007-01-04 05:44:07 · answer #9 · answered by Katie E 3 · 0⤊ 0⤋
More than you'll be here, so don't worry about it!
2007-01-04 05:43:17 · answer #10 · answered by Anonymous · 0⤊ 0⤋