When do you guys think the world is gonna end and why?

Answer 1

The sun is too small to end its days as a supernova. So it won't explode. It is currently 75% hydrogen and 25% helium and is converting hydrogen (element #1) to helium (element #2) by nuclear fusion in its core at a rate of 500 million tonnes a second.

Unsurprisingly, it will run out of hydrogen at some point, This is estimated to be in 5 billion years time.

If it follows the conventional evolutionary path pf other main sequence stars what will happen then is that it will start to fuse helium (element # 2) into carbon (element #6). This reaction involves a higher proportion of the helium mass being converted into energy than was the case with hydrogen being fused into helium.

This more significant loss of mass by the sun will have two effects

(a) much more energy is emitted and it will heat up and expand

(b) its gravitational pull on the inner planets will be lessened and they will spiral outwards into larger orbits.

It is anticipated that the Suin will engulf Mercury and Venus as it expands and heats up as it enters its Red Giant phase (lasting about 100 million years?) but that Earth will escape that fate,. However its atmosphere will boil off and its surface be seared and scorched. Life as we know it will become impossible.

We will need to planet-hop to Europa or Titan and terraform their atmospheres, possibly to nearby stars which have suitable planets to stand any chance of surviving. There will be no more solar power, in this neck of the woods, as afore too long ,..

After its Red Giant phase is completed the Sun will shrink to become a very small White Dwarf, not much bigger than the earth in size and become much much cooler.

It is only 50 years since Gagarin and the start of Mankind's Journey Into Space and we have another 5,000,000,000 years to get ready for Evacuation Day, so there is no need to panic or be despondent about the prospect, but it is like our landlord has served notice on us that we will one day be evicted from our current home and we had better start thinking about where we will all live then, how we will get there, and how we will make it habitable, and whether we can bring pets. We will certainly need to bring some house plants if we want to have some oxygen to breathe!

As Brecht and Weill once wrote ...

Oh Moon of Alabama
We now must say goodbye!

BB

Answer 2

it really depends on the reason. what i mean on that is it might end due to natural cause on earth, it might end because of humans, or it might end because of something from space. here is what i think:
Natural.
natural disasters. volcanoes erupting, tornados, hurricanes, tsunamis, jurrastic change in whether, earthquakes, etc. this might happen because our planet will get old and begin to break down. who knows when this will happen.
Humans.
Of course we all know how we can end the world. nuclear wars could destroy everything. global warming would get too severe and would change the weather jurrasticly and cause super natural disasters(as stated in the above paragraph), or something else we may do in the future. This may happen in a century or 2.
Space.
i think there are 3 possibilities here:
1. In five billion years, the sun will elevate its total energy output to double now. in a sense, it will switch from regular to super gas. it will stop using hydrogen fusion and start using helium fusion. the sun will then expand and engulf mercury and venus, but probably not earth. when it expands it will be a red giant(a type of star). while we will most likely die from the heat and intense solar flares, the earth will probaby go on until it can take no more and break or explode. if not, everything will die and it will be a big rock in space.
2. i will make this one short. the moon creates a tidal bulge, it takes energy from the earth's rotation, slows it down to the point where one side will continually face the sun and the other will not. use ur imagination to decide how nothing will survive. this will happen in about 2 or 3 billion years.
3. a giant meteor will crash into earth and it will be destroyed, or it will hit the moon and the moon will destroy us.

Answer 3

It depend what do you mean by "end". Physical end will come to earth when the sun becomes a red giant, expanding in size to the orbit of mars. Our sun has being burning its hydrogen core for 5 billion years and is about half way through, so earth has another 5 billion years to go.

If you mean the end of life on earth, that could be sooner. There have been at least 7 major mass extinctions on earth in the past, and we seem to be in one today. Mass extinctions coincide with periods of geologic and environmental changes over prolonged periods of time. One occurred over 250 million years ago when life on earth almost completely disappeared. This mass extinction, known as the “End-Permian Event" also opened the door for dinosaurs to rule the earth for the following 183 million years. At the end of the Permian Period, all land on earth formed a giant super continent. The reduction in oceanic continental shelf area, where most of the life existed then, could have played a role. Other theories include heavy volcanism that poisoned the atmosphere over a period of 10 million years, and the impact of the 30-mile wide asteroid that hit near Antarctica has also been implicated.

Another famous extinction occurred 65 million years ago, the Cretaceous-Triassic extinction, which killed off the dinosaurs and allowed mammals to flourish afterwards. The reason for that one is similar -- climate change over millions of years and then a major event, like a big asteroid 6 miles wide hit earth, to push most of life off its edge.

We are currently undergoing climate change today. Half of earth's current species might be extinct in the next hundred years. But I think humans are one of the most adaptable species ever. Human population might plunge due to warfare, competition and new diseases, which always seem to knock on the doorsteps of overpopulated species. There might be fewer human as a consequence but I think Homo sapiens will somehow escape extinction, along with a select group animals and plants. The oceans will become a wasteland since that will be the place people will choose to store carbon dioxide emitted from burning fossil fuels. We may need to cut our limb to save the body. The ocean may be that limb.

If you mean, “end” in a religious sense – the Apocalypse – it may be 2060. That is the date that Sir Isaac Newton, the famous physicist and closet alchemist/occultist concluded would be the end of the world.

Answer 4

Ok, keeping it simple... our sun is a bog standard yellow with a life span of about 10 billion years; we're half way through that.
At the moment our sun is burning hydrogen, converting it into helium.When the hydrogen runs out it's going to have to find other things to burn; heavier elements like carbon, iron etc. when it does this it will turn into a RED GIANT, which means that the suns surface will expand 1000s of times until everything up to the orbit of mars is INSIDE the sun. After that it wont find enough fuel to burn and will gradually shrink until it becomes a dwarf star. End of story, put out the cat and turn off the lights!

Answer 5

Apart from prometheus and kitiany, the rest of you haven't got a clue about anything. You're just mumbling ridiculous nonsense that says nothing for whatever education you got nor to what intelligence you may have.

People, stop living and thinking like you're from a 1000 or 2000 years ago. You're more sophisticated and educated than that.....aren't you?? It's hard to believe that most of you would be so gullible to be taken in by some of the rubbish you've been spouting. Or to think that people should use your "knowledge" to learn from by inviting them to ask questions. It'd be like the blind leading the blind.....the both of you would've gone astray.

Answer 6

Hi,

1) Either due to a nuclear war...

2) Naturally when the sun transforms itself like stars like that do and the heat it gives off becomes so hot that it will burn all life. Even after that the sun will completely "eat" earth and all the other planets in the Solar System.

I prefer the second - the first one is really bad. Like eating poison and breathing poison...

Karl
http://www.imcmake-money-fast-online.com

Answer 7

in the next century because Bush is an idiot and he won't stay in the kyoto thing. Scientists say that if we keep up this putting crap in the air then we will reach a tipping point in the global warming and then we can't stop it. Then we all die when the ice caps melt. Either that or Bush has justed started WWIII and everybody in the middle east will be attacking each other.

Answer 8

I think that the world will end in about another 3 million years. The sun is in the middle of its life and it has been alive for about 3 million years. The sun is one of the smaller stars so it doesn't have very long (for stars). if you have any more questions click on my avatar.

Answer 9

I heard this in my class. My teacher says that the sun is going to explode ( like the other stars) And it's going to make a huge explotion in a couple billion years. And after it's going to explode it will hit Mercury,Venus,Earth,Mars, Maybe the other outer planets like Pluto!!! And then it's going to form a dark hole and it's going to suck the planets and then it's going to be a dwarf star. And that's how the world is going to end!!!

Answer 10

I thin , When God want it, but saint ice say that with strong evidence when sun become end , it is 4,6 and they said the star like sun can shine for 10 million years.