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this post was submitted on 07 Feb 2025
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Wouldn't the planet rapidly start to cool? I think we'd be dead by morning
Atmosphere would hold the heat for a bit, the real issues will begin with food shortages because the crops won't grow
Yeah but how long is a bit? Also, without the gravity center of our solar system, how long would it take for all the planets to start drifting off into the void?
A bit - probably weeks to months. For the second question - 8 minutes for the Earth, since gravity propagates at the speed of light
Expanding a little on the last part, Earth's orbital velocity is about 29.8 km/s so that's the speed at which we would suddenly be leaving the former location of the solar system in a direction that depends on what time of year it happened. Regardless of direction though, the escape velocity of the Milky Way around where we are is about 544 km/s so there's no way we'd be leaving the galaxy. On the other hand the plane of the galaxy is only about 6 degrees off from the galactic center at the moment, so if this happened at the right time of year (don't know when that is) we could launch somewhat towards the core. We would not however get very close to it because the sun's own orbital velocity is about 230 km/s so we'd still be in close to the same galactic orbit overall, just potentially a bit more eccentric.
Do you think Jupiter would take over as our center of the solar system? Hopefully it doesn't sling us into deep space or another planet
It wouldn't sling us into deep space because we are in deep space and will continue to be in deep space.
I meant like away from the rest of our planets. Space= above earth. Deep space= beyond solar system. No one considers earth space
Other planets would just fly off depending on where they were in their orbit relative to us.
But saying we're flying off to deep space makes no sense because the solar system is the area around the sun. No sun = no distinction.
Dude.. Are you trying to be overly pedantic? I am talking about our system as a whole sans sun
no lol
It goes from 85 to 58 in 12 hours right now in reality world
"A bit" = 1 day, and by the end of that day it'd be freezing (below freezing if you live in whiteistan)
I honestly think you're forgetting the atmosphere and like, physical ground under our feet. It doesn't generally drop to 0C overnight unless it's already pretty close to 0C because of the heat trapped in the atmosphere and emanating from the earth's core. It's going to be more like a week for most places.
And the sun doesn't generally blink out of existence. Think about how much energy is on the other side of the earth, it's not like the two sides of earth are separate they are one huge interconnected energy system. What happens on one side impacts the other, and the core doesn't provide enough energy and the atmosphere is leaking heat constantly
no im not, you're forgetting that the sun exists
Max-Min temps (F) yesterday across 3 different continents:
Lucknow 82-53
Mandalay 90-67
Kisangani 91-76
Porto Velho 85-77
Temps drop by 22 F at night (avg) around the equator. Most tropical land reaches freezing in 1.5 days if the sun vanishes. Forget temperate.
Best case scenario is Tropical rainforest since water holds heat. Middle of Amazon gets "only" an 8 F (4.4 C) drop in 12 hours, so 3.3 days to reach freezing.
keep in mind that these temp drops occur right now, in reality meatspace, despite "the atmosphere and like, physical ground under our feet". (both of these exist)
Actually, on second thoughts, this comment explicitly proves that you're a reactionary hiding their lack of investigation behind accusations of immaterialism - just by applying your own logic to real world numbers, you've gone from a day to half a week. You have no place opining on this subject.
Yeah, you'll notice that your "massive" 22°F is the difference between direct sunlight and no sunlight. Do you think there's another sun to take away after the first one, to get rid of even more sunlight and drop the temperature another 22°?
Why don't you believe that physical materials are capable of holding heat energy? Why did you latch on to atmosphere and ground instead of the biggest energy store on the planet, the ocean (you don't need to answer that we know it's because those are the ones I named)? Why do you think that the temperature difference between day and night - sunlight and no sunlight - is the same as the general rate at which energy is lost from the planet? Have you not ever been outside at night to discover the largest part of the temperature drop happens as soon as the sun disappears?
You're doing a very good job of the typical liberal application of raw, familiar logic to a new situation, but the only part of it you actually understand is that the sun supplies lots of energy, and haven't made it any further than that.
The core is still hot. If we bury ourselves deep underground, there is a chance the humanity could survive for thousands of years without a sun. If not humanity, then some sort of life will survive long enough for future archeologists to find it millions of years later.
But don't quite me on this; I'm simply reciting from memory something I read in National Geographic or a similar publication 10-20 years ago. IDK how true this actually is.
We would need enough advance notice to prepare for massively farming mushrooms or something underground to eat. Canned food will run out in a few years, even military MREs have a shelf life. A few lucky people might survive a generation, but there's a minimal breeding stock requirement to avoid degeneration from inbreeding. Extremely long odds, I think the human race would only survive this event in a sci-fi fantasy story.
I don’t know if I would call them the lucky ones.
Fuck you I'm going underground
Yeah, something will live, but I was more thinking surface life.
Doesn't the earth itself provide a significant amount of heat from the core? I'm sure I read somewhere that for something like every 10 meters down you dig, the temperature raises by 1° celcius. So maybe we'd not notice a temperature drop so quickly?
The surface would eventually freeze over. But some life would almost definitely survive deep underground and underwater, near geothermal vents not unlike those that hosted the first lifeforms on Earth. And, maybe, in some billions or trillions of years, Earth would stray near another star system, get captured by its gravity and slowly thaw out, restarting the evolution of life.
Would hydrothermal vents produce enough heat? Or would the oceans freeze over? And then would there just be thermal bubbles surrounding the vents in oceanic ice?
The oceans would eventually freeze over, but the deep ocean could stay liquid for tens of millions of years. Ice is a pretty good insulator, and there is more than one moon in the solar system suspected to have liquid oceans under a layer of ice.
Even if they were to, there is still the deep biosphere
Fucking fascinating. Thanks for the share
Not sure how quick exactly, but the earth doesn't provide enough heat, not even close. Kurzgesagt has a video on a similar subject, without the ~~trillions~~ 1.7e17 Watts showering the earth every second we'd get awfully cold awfully quick. They are talking about slowly moving away from the sun, but they conclude it would get real icy
The moon also doesn't emit it's own light. It would take longer for the moon to "disappear" than it would for the sun but it wouldn't be the whole night.
I agree with you, but also... I'm not sure that I'd notice that I could see the moon a few minutes ago and now I can't (unless I happened to be looking at it as it happened)... I feel like that is something that could be happening every single night and I've never noticed.
The sun disappearing is like... Super noticeable by comparison.
You would notice the lack of light. The night isn't pitch black xD
Most cities have brighter light pollution than the moon can provide.
Maybe if I lived in the countryside, here in a city, I only really notice the moon if I'm looking for it (which I do often, I love seeing our moon).
I live in the city and the moonlight is clearly noticeable so I guess it depends. I mean, a city can be considered as such with as little as 50k people so I guess that, statistically, the majority of people that live in a city would most certainly notice the lack of moonlight.
The moon is just a few light-seconds away from earth; that's why they could have conversations with ground control during the moon landings. Moon will go dark a few seconds after the sun.
Wherever you live on the Earth's surface starts cooling every night and gets warmed up again the next day. It wouldn't cool any faster if the sun went away, it would just keep cooling at the normal rate until everything was frozen. But I doubt it would take more than a week or two, depending on where you live.
Yeah, but that's with petawatts being blasted on the other side of the earth every second, wouldn't the loss of that make the whole system cool down faster, including the side the sun doesn't touch? I'm thinking it'd be like having food on a hot plate, bottom is very hot, the top is less hot. But if you take the food off the plate the whole thing rapidly goes to room temp. I honestly have no idea, just conjecture tbh.
The only way to get the right answer would involve doing math and knowing enough climatology and geology to even know which math, so I dunno.
Someone posted a link above, claims it'd take about a week to hit 0°C
Cool, I will take a look. Intuitively that seems about right to me. I was just saying the world definitely wouldn't freeze overnight.
Well when temps are already ~ -1°C in your area you tend to freeze a bit quicker
False; no sun = no morning!
So extremely cloudy mornings = no morning? lol just kidding.