When the sun will die?

Answer 1

In approximately 5
billion years, when the hydrogen in the Sun's core is mostly
exhausted, the core will collapse---and, consequently, its temperature
will rise---until the Sun begins fusion helium into carbon. Because
the helium fuel source will release more energy than hydrogen, the
Sun's outer layers will swell, as well as leaking away some of its
outer atmosphere to space. When the conversion to the new fuel source
is complete, the Sun will be slightly decreased in mass, as well as
extending out to the current orbit of Earth or Mars (both of which
will then be somewhat further out due to the Sun's slightly decreased
mass). Since the Sun's fuel source will not have increased in
proportion to its size, the blackbody power law indicates that the
surface of the Sun will be cooler than it is now, and will become a
cool, deep red. The Sun will have become a red giant.

Answer 2

Well: 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 about 3×108 K. 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. However, Earth's water and most of the atmosphere will be boiled away.

Answer 3

It's is supposed to die out in approx. 5 billion years. Our Sun is a G2 star which lasts about 10 billion yrs.

Answer 4

In about 5 billions years.. it's 5 billion years old and yellow dwarfs live about 10 billion years

Answer 5

Did you know that this question has been asked almost 400 times in Yahoo Answers? There are lots of really good answers in those questions. I think you should take a look instead of asking the question again.

;-D better questions get better answers!

Answer 6

5 billion years. When all it's hydrogen runs out.

Answer 7

it will be several billion years before the sun dies out.

Answer 8

In a few million years.

Answer 9

who knows

Answer 10

now