2007-03-13 04:31:36 · 7 answers · asked by rkdwivedi999 2 in Science & Mathematics ➔ Astronomy & Space
The sun is not "burning" in the same way an ordinary fire "burns". The energy from the sun comes from nuclear fusion reaction, and yes, eventually the sun would come to an end, but it's billions of years away. What eventually happens to stars depends on the star. Some explode, others expand for a moment and then become a dwarf star. It's expected that our sun will undergo a brief expansion into a red giant, and then recollapse into a small dwarf star. The Earth will first undergo intense heat during the red giant stage, and then end up being extremely cold when the sun finally becomes a dwarf star.
2007-03-13 04:43:58 · answer #1 · answered by Scythian1950 7 · 1⤊ 0⤋
What is going on in the sun is not burning of the sort that happens in a fireplace -- the sun is too hot for that sort of burning to take place. What is happening is that hydrogen in the core, subjected to great heat (15 million Kelvin) and enormous pressure fuses to create helium; the process produces a great deal of energy. This process has been going on for over 4 billion years, and it will continue for about 5 billion more before the core hydrogen is gone. At that time, the dynamics of the sun will change markedly: it will turn into a red giant, expand enormously, and eat the earth.
2007-03-13 12:15:58 · answer #2 · answered by Anonymous · 1⤊ 0⤋
The sun (and all other stars) is not "burning" in the sense that a candle flame or a campfire is burning. The sun's energy source is a thermonuclear reaction, rather than a chemical reaction like common fire.
The mass that is available for the sun's thermonuclear reaction will last about 5-1/2 billion more years.
2007-03-13 21:53:41 · answer #3 · answered by aviophage 7 · 1⤊ 0⤋
The sun will become really big and consume at least the first two planets, but itll be really cold for a sun.
But that'll be in ages, we'll all be dead, our kids will all be dead, our grandkids will all be dead and if we haven't ruined the earth for ourselves already (global warming, nuclear waste etc) or humans wiped out by an asteroid or an ice age or something then the civillisation left will be so vastly different they can probably all escape in some super-giant space station or something and go off and ruin another planet, If they hadn't left already.
2007-03-21 02:22:48 · answer #4 · answered by Anonymous · 0⤊ 0⤋
i don't mean to sound all "doomsday" or whatever, but, we will die. we cannot survive without the sun. and not just humans will die, everything will die. plants, animals... the world with experience an ice age without it's only sorce of heat. it will be an ice age of all ice ages, so cold there is NO chance of suvival. also, plants need sunlight in order to live.
some people don't realize if we were any farther from the sun it'd be too cold to live, any closer it would be too hot. we were perfectly placed where we are, and not to be "religous" or preachy, but thats an obvious sign of a Creator.
2007-03-13 11:50:12 · answer #5 · answered by Anonymous · 0⤊ 1⤋
The Sun is good for another few billion years, then it will become a red giant.
2007-03-13 11:42:07 · answer #6 · answered by cosmo 7 · 0⤊ 0⤋
We will have a dark and cold solar system.
2007-03-13 11:57:58 · answer #7 · answered by ramshi 4 · 0⤊ 1⤋