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Post Reply If the Sun went dark would all life on Earth eventually end?
Posted 4/10/16
But seriously, if the sun were to suddenly disappear, everything on earth would die.

Not only would it be cold as helllll, but the sun is one of the main sources of life on earth
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20 / M / Australia
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Posted 4/10/16
^ yes that would happen tho there is lots of sorces of uv and light and central heating lol but yea probs everything die
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Posted 4/10/16
if the sun disappeared, the surface of the ocean would freeze. that ice on the surface would act as an insulator, so the ocean wouldn't be affected as badly. life that rely on the sun to survive would perish. that includes the many species of plants and animals.

life would likely still exist at the deepest parts of the ocean though, with microorganisms relying on a process called chemosynthesis[1] (as opposed to photosynthesis) for energy.

[1] http://www.amnh.org/explore/curriculum-collections/deep-sea-vents/light-and-dark-in-the-sea/
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26 / F / Overlord's Castle
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Posted 4/10/16
yes........unless we were able to produce and artificial sun.....
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F
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Posted 4/10/16
boy i hope so
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Posted 4/10/16 , edited 4/10/16

JustineKo2 wrote:

How would life on Earth survive if the Sun suddenly went dark?
Are even our most advanced technologies dependent on the Sun in some form?
Surely millions will die but I think humans will waste too many resources trying to save many people rather than devising a solution to ensure survival over the long term.


If the sun vanished the Earth would spin off into space and probably crash into something (Jupiter maybe?). What' do you mean by "dark"? Do you just mean that the sun no longer emits visible light? No heat or energy? If that's the case, the only heat source would be the Earth's molten core. The survivors would have to live deep underground, while the Earth's surface turns to an almost unbroken sheet of snow and ice. Very cool.

Edit:


namealreadytaken wrote:

if the sun disappeared, the surface of the ocean would freeze. that ice on the surface would act as an insulator, so the ocean wouldn't be affected as badly. life that rely on the sun to survive would perish. that includes the many species of plants and animals.

life would likely still exist at the deepest parts of the ocean though, with microorganisms relying on a process called chemosynthesis[1] (as opposed to photosynthesis) for energy.
]


Ah; so maybe living in the deep ocean on a vent or something is also viable. Are these micro-organisms delicious?
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21 / M / McDonough
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Posted 4/10/16
Not "all life" would perish. There are plenty of species at the bottom of the sea (where there is 0 sun light) that survive off of chemosynthesis. So all of the various species at the bottom of the sea would survive. If we could somehow manage to develop a Rapture or Atlantis in time then maybe some people could survive. But in the end even if we humans don't, something will survive.
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Posted 4/10/16
Yep, our planet would be uninhabitable and no amount of digging, insulation and heating would help with those extreme conditions. Our current technology would definitely not be up to the task and I'm not convinced that our technology would ever be able to withstand that. There would also be no water and no water = no life.
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Posted 4/10/16
Such depressing, defeatist responses, I was hoping to see a few creative ideas put forth utilizing current technology or possible developments. I like the idea of inhabiting near vents in the sea. You have heat, water and a source of organic material.

The scenario I proposed just involved the sun becoming cold, no major gravitational or mass changes, so the Earth would keep on spinning as usual, just really coldly.

What about nuclear generators to produce light and heat for growing crops? If the entire ocean doesn't freeze then we have all the cooling water we need. The Earth itself produces a lot of heat, we just need to dig deep to tap into that, not so deep in active volcanic areas.
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19 / M / Hamilton, ON, Canada
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Posted 4/10/16

JustineKo2 wrote:

Such depressing, defeatist responses, I was hoping to see a few creative ideas put forth utilizing current technology or possible developments. I like the idea of inhabiting near vents in the sea. You have heat, water and a source of organic material.

The scenario I proposed just involved the sun becoming cold, no major gravitational or mass changes, so the Earth would keep on spinning as usual, just really coldly.

What about nuclear generators to produce light and heat for growing crops? If the entire ocean doesn't freeze then we have all the cooling water we need. The Earth itself produces a lot of heat, we just need to dig deep to tap into that, not so deep in active volcanic areas.


It's still depressing either way mate...

Sure you can survive in pockets of survivable areas hiding away in a dome...

But nothing truly replaces the warmth of the sun on your skin, and breathing warm fresh air into your lungs.

If the sun goes dark it's pretty much over. Induced panics, looting, etc. People will be flooding grocery stores to take what's left. There will be increased murders. Essentially there will be mass hysteria in the early days. The temperature will plunge dramatically. There's no way to survive unless you're in a dome.

And what you're thinking is if there was preparation before all of this happened. If the government was all like, "there's 30 days before the sun went dark" there's no way to save everybody, but even if a million survived in domes scattered around the world. It's still depressing.

I'd rather live in heaven than cling to life.
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Posted 4/10/16 , edited 4/10/16

JustineKo2 wrote:

Such depressing, defeatist responses, I was hoping to see a few creative ideas put forth utilizing current technology or possible developments. I like the idea of inhabiting near vents in the sea. You have heat, water and a source of organic material.

The scenario I proposed just involved the sun becoming cold, no major gravitational or mass changes, so the Earth would keep on spinning as usual, just really coldly.

What about nuclear generators to produce light and heat for growing crops? If the entire ocean doesn't freeze then we have all the cooling water we need. The Earth itself produces a lot of heat, we just need to dig deep to tap into that, not so deep in active volcanic areas.


Does humanity have sufficient technological capacity to create completely self-contained habitations? Yes. Could we build them quickly enough to complete them prior to the surface becoming uninhabitable, no.

With a year or two of advance notice, and assuming the population actually *believes* the danger and devotes all effort to building shelters, humanity could survive (but this also assumes that people as a whole accept that most of them won't be going into the shelters, and don't riot and destroy the effort!).

However, the sheer industrial scale of the effort would be ludicrous; keep in mind, you would have to build complete ecosystems. Oxygen generation would be required as well, though that would be a lesser problem than a stable agricultural ecosystem. I suspect the occupants would consume a fair deal of algaes (or even factory-synthesized sugars) as they would be the most energy-efficient means of converting nuclear power into energy forms the human body can use.

Each shelter would have to survive the super-hurricane force winds that would come with the freezing-out of the atmosphere; underground as already proposed would be best. Underwater would be a terrible idea, because you have to deal with mass pressure, and oh by the way, as the water freezes down, it expands and would literally crush the shelter. Better to go subterranean. Geothermal heat (from nuclear decay) would help reduce your energy needs, but each shelter would need a massive energy source, and the only feasible method would be nuclear (no excess oxygen to burn anything, no atmosphere or rivers or tides or sunlight for "renewable" power), so you would have to stockpile huge amounts of fissionable and/or fusionable material beforehand, and you would have to prepare dump sites to put the wastes ahead of time, because additional digging afterward would be too energy-intensive to be viable.

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Posted 4/10/16
Yes.
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26 / M / Alberta, Canada
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Posted 4/10/16
If the sun went dark. All life on earth would end pretty instantly. Same will happen when sun expands.
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Posted 4/10/16 , edited 4/10/16

JustineKo2 wrote:

How would life on Earth survive if the Sun suddenly went dark?
Are even our most advanced technologies dependent on the Sun in some form?
Surely millions will die but I think humans will waste too many resources trying to save many people rather than devising a solution to ensure survival over the long term.


And....you're wondering if this will happen any time soon?

Or did it already happen and you panicked?
No, it's okay, it's called "Night", happens all the time; it's just temporary, wait twelve hours and the sun comes back.
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Posted 4/10/16
Yep, everyone and everything would die. Pretty rapidly, too. All I can think of is there might be a couple of microorganisms that could survive, but I'm not even sure of that.
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