What about gravity? I know I read something about this once, but is gravity also limited to the speed of light?
Yeah, we’ll feel it after 8 minutes all right :-)
Gravity travels at the speed of light.
Does it? In my experience alcohol can delay gravity
From what I know, particles that have a mass greater than 0 move below the speed of light and can never reach it. Particles that have no mass (every force is transferred via particles) move at the speed of light. So there is no way to have anything that is faster than the speed of light, not even forces.
But do we know that gravity is a force transfered by a particle yet?
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…
the light first has to bounce off of the moon, and then back to earth
That’s a second, more or less.
that is still one second longer so.
But will we feel the shift in gravity/inertia as the planet starts moving straight?
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.
We are in “free fall” around the Sun so that’s why we don’t feel its pull of gravity.
You would similarly feel weightless if you were in an orbit around Earth.
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
Most of us sleep at night and don’t check our info-hose feeds until we wake up.
What’s sleep?
looks at time that says 23:27
Sleep is for people who don’t know how to write code!
And even if you’re not connected at the moment, the moon will go dark.
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.
It would turn pitch black. So dark the stars far away would be the brightest when compared to everything else. It would be scary.
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.
Certainly not with all the light pollution.
Wouldn’t the planet rapidly start to cool? I think we’d be dead by morning
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
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
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)
The irony of the guy replying to you with PHD in his username not understanding that the Sun blasts the Earth with an absolutely unreal amount of energy
there’s something about people who use lots of words that makes them particularly…yea
it’s a new level of ignoring material conditions
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.
I honestly think you’re forgetting the atmosphere and like, physical ground under our feet.
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 85-77Temps 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.
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
You are also forgetting the atmosphere and ground (and oceans, of course) - It being one huge interconnected energy system is exactly why I’m saying it would take longer. This guy’s calculations reckon we’d lose about 1 degree per 12 hours. January’s global average temperature was around 13°, so that’d be 6 and a half days. July last year it was 17°, so that’d be a whole 8 and a half days. It’s going to be more like a week.
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
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.
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 :)
worry
I, for one, welcome the inexplicable annihilation of the sun
Yeah! Fuck you, Ra! I got sunburned on Lake Powell!
