this post was submitted on 08 Aug 2024
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Science Memes

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[–] shneancy@lemmy.world 5 points 3 months ago (1 children)

unless you're sleeping - 8 minutes and maybe 30 seconds to start seeing posts online, 10 minutes to start getting news about it

[–] Duamerthrax@lemmy.world 5 points 3 months ago (2 children)

I don't know about you, but if I start seeing headlines about the Sun vanishing, I'm assuming it's a hoax and going back to bed.

[–] Darkassassin07@lemmy.ca 3 points 3 months ago (1 children)

Maybe if ony one or two places are reporting on it. If all the major 'reputable' news sources are reporting it; there's a pretty good chance there's something to it.

[–] Duamerthrax@lemmy.world 2 points 3 months ago (1 children)

Yeah, but I'm not vetting the sources on that at 1am.

[–] shneancy@lemmy.world 1 points 3 months ago (1 children)

dw other people will, and the sun vanishing would cause mass panic and with it all laws & morality would go to go to hell. So unless you live off the grid you're not going to get any sleep that eternal night :)

from then you'd probably have a few days to say goodbye to your friends and family, the Earth would rapidly start cooling and humanity would be lucky to have 0.0001% of people survive the first year

[–] Duamerthrax@lemmy.world 1 points 3 months ago (1 children)

Iceland would have the highest chance. You have to find places that have geothermal or nuclear power and access to pod farming equipment.

So unless you live off the grid you’re not going to get any sleep that eternal night :)

You underestimate my ability to turn off notifications on my phone.

[–] shneancy@lemmy.world 1 points 3 months ago (2 children)

yea realistically nuclear power would be one of the few things to keep humanity going in that doomed world. There's definitely a couple of bunkers set up to sustain life no matter the situation outside, but aside from the rich and a couple top scientists to think for them everyone else on the planet will die, honestly best course of action would be just commiting suicide with all your loved ones whilst there's still some wood to burn for warmth.

I don't mean the notifications on your phone I mean the screaming, shouting, and arson outside 😭

I suspect the first hour (though that might be generous) would be grave silent, then all hell would break loose. Nobody will have anything to lose

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[–] shneancy@lemmy.world 1 points 3 months ago

then wait until the 10min mark then! Would be rather odd if all news sources in unison decided to pull a prank like that

[–] AidsKitty@lemmy.world 4 points 3 months ago (1 children)

All we can see is 8 minutes into the sun's past.

[–] Kolanaki@yiffit.net 2 points 3 months ago* (last edited 3 months ago)

What if I have a flashlight and am underground?

[–] ekZepp@lemmy.world 2 points 3 months ago* (last edited 3 months ago) (1 children)

In about 8 minutes and 20 seconds, we would lose the Sun’s gravitational force. Namely, gravitational waves travel at the speed of light (186,000 miles per second or 299,000 kilometers per second). This also means that we would be in complete darkness 8 minutes after the Sun disappears

https://curiousmatrix.com/what-would-happen-if-the-sun-disappeared/

[–] gerbler@lemmy.world 4 points 3 months ago (2 children)

What I wanna know is if gravitational waves travel at the speed of light all the time or are they influenced by media like light.

[–] Zink@programming.dev 2 points 3 months ago

I’m 0% an expert in this, but I think they move at light speed all the time. Light is “affected” by mass only indirectly, since the light travels in a straight line through local space but space itself is curved by the mass.

[–] Tlaloc_Temporal@lemmy.ca 1 points 3 months ago

Light gets caught up in mediums because those mediums have electric fields (the electrons for matter, or light itself when interfering). Thus, gravity waves will be slowed by gravity fields, like planets, stars, and galaxies.

What waves interact with also depends on the wavelength, like how radio waves can bounce off Earth's ionosphere, but can ignore the atoms in the walls of your house. There are plenty of very large gravity waves from merging black holes and neutron stars, and those pass right through Earth. Smaller gravity waves (like from a collapsing or disappearing star) could interact with other stars, possibly reflecting off of star clusters, or even refracting through like glass if the distances were regular and the waves just the right length.

Those waves would also be delayed, just like light in glass, air, or water. Interestingly, even light still moves through these mediums at light-speed, but all it's energy moves slower. If you had a sensitive enough detector you could see heavily attenuated light that didn't slow down.

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