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i mean, if the moon is up there, the light first has to bounce off of the moon, and then back to earth, so yes, it would most definitely take longer...

[-] Narauko@lemmy.world 2 points 2 hours ago

The real question is if the earth becomes a rogue planet or if Jupiter captures most/all of the remaining solar system. Jupiter is technically a failed star, so could it finally get it's glowup from being the sun's understudy and keep us all together until we fall into the gravitational well of a new star?

[-] roguetrick@lemmy.world 1 points 23 minutes ago* (last edited 20 minutes ago)

If the sun just disappears, I doubt even having another sun would keep everything from flying off to fuck knows where. Jupiter, by comparison, is beyond hope. The Barycenter is far from Jupiter.

[-] jjagaimo@sh.itjust.works 31 points 6 hours ago* (last edited 6 hours ago)

But not by much longer. People on the other side of the world or connected to satellites monitoring sunspots would notice pretty much immediately after the light ceases to reach the earth and would tell everyone else over the internet

[-] LovableSidekick@lemmy.world 2 points 2 hours ago

Most of us sleep at night and don't check our info-hose feeds until we wake up.

[-] 5too@lemmy.world 16 points 4 hours ago

And even if you're not connected at the moment, the moon will go dark.

[-] LovableSidekick@lemmy.world 2 points 2 hours ago* (last edited 2 hours ago)

Good one! If the moon wasn't visible at the time and you were just sitting outside say at midnight, I wonder if you would notice anything different.

[-] ChapulinColorado@lemmy.world 2 points 1 hour ago

It would turn pitch black. So dark the stars far away would be the brightest when compared to everything else. It would be scary.

[-] LovableSidekick@lemmy.world 2 points 1 hour ago

According to astronomers the sun doesn't have a measurable effect on the night sky when it's more than 18 degrees below the horizon. So I doubt naked-eye observers would notice.

[-] M137@lemmy.world -4 points 1 hour ago

Ok, first thing, did you not understand the image is a joke? Secondly, you have failed so badly at trying to use logic. And you'd notice it everywhere on the earth, both because of the moon and also just light scattering, it would become darker than ever before. And as said, most people would be asleep on the dark side, which is obvious. And it's not like the astronomers etc. have some kind of worldwide siren to get everyone's attention, most people wouldn't notice it for a while, even if they posted about it online.

[-] affiliate@lemmy.world 17 points 6 hours ago

yeah but everybody else would be sleeping so it would still take longer

[-] ColeSloth@discuss.tchncs.de 8 points 5 hours ago* (last edited 5 hours ago)

But will we feel the shift in gravity/inertia as the planet starts moving straight?

[-] LovableSidekick@lemmy.world 2 points 2 hours ago* (last edited 2 hours ago)

I really doubt we would notice, because if so we would already be feeling different during day and night. The sun pulls us toward the sky during the daytime and toward the ground at night. Also toward the east at sunrise and the west at sunset. But none of this seems noticeable.

[-] stebo02@lemmy.dbzer0.com 8 points 4 hours ago
[-] ColeSloth@discuss.tchncs.de 1 points 58 minutes ago

I know gravity moves at the speed of light. I'm just referring to the slight pull of the gravity and the sudden shift to traveling straight off instead of a circle.

[-] 0ops@lemm.ee 12 points 4 hours ago

This is the cutting-edge of my understanding so if I'm wrong somebody call me out, but I think because gravity is warping space-time and not actually pulling anything, we wouldn't feel an inertia change. Our inertia would be maintained, but the space-time we're going through would suddenly be shaped different, so we'd follow a new path

[-] mipadaitu@lemmy.world 2 points 1 hour ago

The part you're missing is that earth isn't a point in space. That's why there's tides caused by the sun (which are different than tides caused by the moon)

A person wouldn't feel the difference, but the tides would slosh back when the solar gravity stops effecting them.

[-] Etterra@discuss.online 2 points 3 hours ago

So would all the other planets, so there'd be a non-zero chance we'd smack into one of them. Most likely though we'd become a very, very cold rogue planet.

[-] AbsoluteChicagoDog@lemm.ee 2 points 3 hours ago

How do you figure? Space is fucking huge. I don't see how any planets could collide.

[-] burgersc12@mander.xyz 19 points 7 hours ago

Wouldn't the planet rapidly start to cool? I think we'd be dead by morning

[-] LovableSidekick@lemmy.world 4 points 2 hours ago* (last edited 2 hours ago)

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.

[-] Psythik@lemmy.world 20 points 5 hours ago

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.

[-] LovableSidekick@lemmy.world 1 points 2 hours ago

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.

[-] ChapulinColorado@lemmy.world 2 points 1 hour ago

I don’t know if I would call them the lucky ones.

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[-] rockerface@lemm.ee 24 points 7 hours ago

Atmosphere would hold the heat for a bit, the real issues will begin with food shortages because the crops won't grow

[-] bobs_monkey@lemm.ee 9 points 6 hours ago

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?

[-] rockerface@lemm.ee 14 points 5 hours ago

A bit - probably weeks to months. For the second question - 8 minutes for the Earth, since gravity propagates at the speed of light

[-] davidgro@lemmy.world 8 points 4 hours ago

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.

[-] sooper_dooper_roofer@hexbear.net 2 points 4 hours ago* (last edited 4 hours ago)

A bit - probably weeks to months.

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)

[-] philthi@lemmy.world 11 points 7 hours ago

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?

[-] rockerface@lemm.ee 13 points 6 hours ago

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.

[-] Resonosity@lemmy.dbzer0.com 2 points 4 hours ago

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?

[-] Tlaloc_Temporal@lemmy.ca 6 points 3 hours ago

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.

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[-] Rhaedas@fedia.io 38 points 9 hours ago

And now for the segue into a shower thought - so the first thing night side would notice is the Moon disappearing (if it's in the night sky), but after that, how long before effects begin to suggest something is seriously wrong on the day side. Something tells me it will be sooner than the morning.

[-] TaTTe@lemmy.world 38 points 9 hours ago

I'd assume after 8 minutes the people on the day side would notice and all media would blow up, so hopefully you'd be asleep and wouldn't have to worry :)

[-] A_Very_Big_Fan@lemmy.world 16 points 7 hours ago

worry

I, for one, welcome the inexplicable annihilation of the sun

[-] Empricorn@feddit.nl 2 points 1 hour ago

Yeah! Fuck you, Ra! I got sunburned on Lake Powell!

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this post was submitted on 07 Feb 2025
591 points (98.0% liked)

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