When the Sun exhausts its hydrogen reserves, starts to fuse helium to make carbon, oxygen and nitrogen, swells up and becomes a Red Giant in about 5 billion years' time.
Whilst Earth may escape being engulfed, like Venus and Mercury will be, as the Sun's mass will be significantly reduced by switching to helium fusion, and this should mean the earth can spiral out into a wider orbit as the sun's gravitational pull will become smaller as it reduces its mass, the bad news is that the earth will become heat scorched, its water and its atmosphere will boil away into space. Life, as we know it, will become impossible. We will no longer be in an habitable zone.
Ignore 2012 predictions. They have no scientific basis to them.
We may perhaps be at risk of increased cometary activity in the inner solar system when the Star Gliese 710 approaches to a mere 1,1 light years away in about 1.4 milliion years time. and perturbs the Oort Cloud as a result.
2007-07-22 15:34:06
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answer #1
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answered by Anonymous
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By "world" I assume that you mean the Earth. Well, setting aside the possibility of a future Asteroid collision with the Earth (undetermined date), the Earth will be fried to a crisp in about 4 to 5 Billion years when the Sun begins to enter its own stage of demise by running out of sufficient Hydrogen to perpetuate the nuclear fusion process that keeps it burning brightly. At that point is is supposed to expand to four or five times its present size and begin to devour any and all objects in its near vicinity. Mercury and Venus are suitable candidates. Earth is next in line and could be sucked into the action. Regardless, since only a few degrees in climate change vastly affects situations here on Earth, quadrupling the radiation from the Sun would boil away all the Earth's Oceans, Seas, Lakes and Rivers turning the Earth into a barren clump of dirt and rock.
I would not be to overly concerned about this. We will all be long gone when it happens.
The most frightening thing on the near horizon is granting the control of the world's most powerful army, navy, and air forces to a gentleman with no military experience or background - Barack Obama or to a similarly prepared woman - Hillary Clinton in November of 2008. Should either of these two political hopefuls actually make it into office in 2008, I suggest that the US and the rest of the world will encounter a meltdown such as we have never seen before.
2007-07-23 02:23:11
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answer #2
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answered by zahbudar 6
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Human race is so stupid that it want survive for another 5 billion years. But theoretically it should be about 5 billion years.
First this is assuming that if Islamic extremist don't kill us and the rest of the world with nuclear weapons that some out of work russian cold war scientist has developed for them.
Second perhaps humans will do it via pollution which will start a new ice age and if the ice covers most of the earth it will reflect heat from the sun and the ice will never be able to melt.
Third we will have a collision with either comets or the Andromeda galaxy
But I'm a creationist so I don't worry about it that much.
2007-07-23 01:33:15
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answer #3
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answered by Anonymous
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If you come to know about the dead end of the life your peace and harmony will move out of your life. The best thing you have to know every end has a starting and every start has an end decide what will be the end. The god knows when will the world end? Dont have an Idea based on the human calculation. You know man proposes god disposes.
2007-07-22 22:46:52
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answer #4
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answered by Ramasubramanian 6
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One day an exact date will be with us, by which I mean our species, but that day is ahead a bit. Meanwhile, I can only say that the 'world,' by which I assume you mean Earth, will go the way of all of our solar system and be engulfed by an expanding star, our sun, ol' Sol himself (or herself). I imagine that most stars eventually do what our star will do, which is kind of spread, expand, burp, spit up, gurgle, grow, grow, grow. Several million years ahead, so no cause to be concerned because...because long before then our species will go the way of all species on Earth, become extinct. Back to the sun: eventually the big, fat, red thing will blow up. Bang! Not as big a bang as The Big Bang but it will be enough, it will serve. The rub is that all that banging isn't apt to attract much attention in our galaxy, much less any of the other billion or so galaxies in the universe. It's kinda big.
2007-07-22 22:42:39
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answer #5
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answered by Yank 5
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In roughly five billion (5,000,000,000) years, the sun will expend the last of its fuel and will inflate into a red giant. It will expand past the orbit of Earth, incinerating the planet. And that will be that for Earth.
Of course, the Earth is not yet five billion years old, so it's not anything we have to worry about.
2007-07-22 22:35:02
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answer #6
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answered by poorcocoboiboi 6
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World will not end. It will be transformed into 4th dimension
2007-07-26 11:47:55
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answer #7
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answered by Muthu S 7
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well just have to see knw wont we
and well in the mean time lets try to enjoy it
2007-07-22 22:40:16
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answer #8
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answered by Jiya D. 3
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How long is a piece of string?
2007-07-23 02:12:27
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answer #9
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answered by Anonymous
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when your wife finds your girlfriends phone number.
2007-07-23 05:45:50
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answer #10
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answered by jersey city Joe 2
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