cross-posted from: https://lemdro.id/post/38963642

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[–] 76 points 6 months ago (10 children)

Some fun geography one's.
Maine is the closest US state to Africa.
Alaska is the northern most, Western most, and Eastern most state in the US.

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  • [–] 27 points 6 months ago (3 children)

    My favorite geography fact is that, if you're on the northern edge of Brazil, you're actually closer to Canada than you are to the southern border of Brazil.

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  • [–] 50 points 6 months ago* (last edited 6 months ago) (1 child)

    My favorite geography one: You get on a plane at Tampa Bay, Florida and fly due south. Which South American countries do you fly over?

    Answer is none of them. You miss the entire continent because you are too far west.

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  • [–] 7 points 6 months ago (3 children)
  • [–] 8 points 6 months ago

    The Alaska one North and West are obvious, but there are some islands that cross the date line, making them technically east.

    Someone else posted a graphic, but basically Maine is significantly farther east which cancels out the North/South difference of other states.

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  • [–] 56 points 6 months ago (6 children)

    If you're not familiar with the flavors of quarks, they probably seem fake.

    • Up
    • Down
    • Top
    • Bottom
    • Charm
    • Strange

    Of course they all have antimatter counterparts. But anti-up is not the same as a down quark, anti-top is not the same as a bottom quark, etc.

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  • [–] 15 points 6 months ago (2 children)

    I do want to hear the story of the physicist when they got to making up the names for charm and just strange. I imagine many sleepless nights.

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  • [–] 24 points 6 months ago

    The quark flavors were given their names for several reasons. The up and down quarks are named after the up and down components of isospin, which they carry.[60] Strange quarks were given their name because they were discovered to be components of the strange particles discovered in cosmic rays years before the quark model was proposed; these particles were deemed "strange" because they had unusually long lifetimes.[61] Glashow, who co-proposed the charm quark with Bjorken, is quoted as saying, "We called our construct the 'charmed quark', for we were fascinated and pleased by the symmetry it brought to the subnuclear world."[62] The names "top" and "bottom", coined by Harari, were chosen because they are "logical partners for up and down quarks".[41][42][61] Alternative names for top and bottom quarks are "truth" and "beauty",[nb 4] but these names have somewhat fallen out of use.[66] While "truth" never did catch on, accelerator complexes devoted to massive production of bottom quarks are sometimes called "beauty factories".

    https://en.wikipedia.org/wiki/Quark

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  • [–] 49 points 6 months ago (2 children)
  • [–] 24 points 6 months ago (1 child)

    The word “exosphere” was proposed by Lyman Spitzer to designate the outer part of a planetary atmosphere, defined as the region where the density is low enough to describe it as a collisionless region. Since the beginning of the space era, it was discovered that the major neutral constituent of Earth's exosphere is atomic hydrogen, and Shklovsky (1959) coined the word “geocorona” to designate the H component of the exosphere.

    I didn't read the whole paper obviously but this part makes it sound like you're talking about the exosphere in which, by definition, there might be more gas molecules than elsewhere but few enough that they're unlikely to run into them, or they're unlikely to run into each other maybe IDK.

    Obviously, if there was a significant atmosphere the moon would experience atmospheric drag and would fall to earth.

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  • [–] 2 points 6 months ago

    Obviously, if there was a significant atmosphere the moon would experience atmospheric drag and would fall to earth.

    Would it?

    The Moon is slowly drifting further away because Earth's rotation is significantly faster than the lunar orbit. Some of Earth's rotational energy is bled into the lunar orbit, causing it to increase in height, which in turn lowers its orbital period.

    If there was a significant atmosphere for Earth at that height, you'd think it would actually give the Moon a boost

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  • [–] 89 points 6 months ago (24 children)

    For one hour each year, part of Florida and part of Oregon have the exact same time on their clocks.

    Sharks have existed long enough as a species to have orbited the entire Milky Way Galaxy - twice.

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  • [–] 40 points 6 months ago (5 children)

    Sharks are so old that I've seen other comparisons, had never seen the milky way one before, that's very interesting, the other ones I knew is that sharks are older than:

    • The rings of Saturn
    • Trees

    So when sharks first evolved Saturn had no rings and trees didn't exist yet.

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  • [–] 24 points 6 months ago* (1 child)

    Sharks also predate basically all big recognizable surface geology features on earth. They're way older than the Grand Canyon or the Himalayas. It kind of makes sense once you realize they date back to the Pangea supercontinent.

    Also, biologically modern humans are much older than Niagara Falls.

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  • [–] 6 points 6 months ago

    when sharks first evolved Saturn had no rings

    Or at least, didn’t have its current rings. I could be wrong but couldn’t it have torn apart other moons to create a different set of rings that then degraded over time?

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  • [–] 18 points 6 months ago* (last edited 6 months ago) (7 children)

    I don't understand the clock one.

    The shark fact is impressive though. I like to tell folks that the galaxy is so big that the solar system hasn't even made 1/4 of an orbit since the non-avian dinosaurs went extinct. Might add some perspective.

    Nitpick: there are many species of shark so maybe you meant taxonomic genus or family.

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  • [–] 34 points 6 months ago (5 children)

    I don't understand the clock one.

    Part of the western Florida panhandle (WFP) is on Central time. Part of southeastern Oregon (SEO) is on Mountain time. That puts them one hour apart.

    In the fall, when we go back into Standard Time, when the clock hits 2am, you flip the clock back to 1am.

    So, during a normal night, WFP would be at 2am and SEO would be 1am. But on the night the time changes, WFP hits 2am and immediately flips their clocks back to 1am - which means that, for one hour a year (until SEO hits 2am and flips their clocks back), part of Florida and part of Oregon's clocks are showing the exact same time.

    I kinda struggled over how to word this - they're not in the same time zone, but for this one hour they might as well be.

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  • [–] 3 points 6 months ago*

    Well the specifics are the lineage which includes sharks, we found stuff that might be sharks but hard to prove are definitely sharks that's 450 million years old (fossil sharklike scales)

    And, this is copypaste from Snopes:

    The earliest known fossil evidence of sharks (or their ancestors) are "shark-like scales" that date back to 450 million years ago, according to the National History Museum in London. However, whether these scales adorned "true sharks" or "shark-like animals" is an issue debated by the scientific community.

    Nonetheless, scientists largely agree that, according to DNA evidence, living sharks, rays, and deep-sea fish called chimeras likely began evolving around 420 million years ago.

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  • [–] 11 points 6 months ago (1 child)

    Worth pointing out that this is the shark lineage and not modern sharks. Sharks have evolved a lot over the last several hundred million years

    In the same sense, jellyfish are older than sharks, and sponges are the oldest still-extant animal lineage. Or just sounds cooler to say sharks

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  • [–] 5 points 6 months ago* (last edited 6 months ago) (3 children)

    They are older than trees. The very concept of trees.

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  • [–] 3 points 6 months ago

    Trees are 385 million years old. Sharks are 200 million years old. Trees still out-date sharks.

    Although... Trees have evolved multiple times in Earth's history... So sharks are certainly older than certain trees. But not older than the whole tree concept thing.

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  • [–] 5 points 6 months ago (1 child)

    CORRECTION!!

    "Shark" is not a species. A whaleshark is a species. A tigershark is a species. "Shark", representing multiple species of shark, is a division, specifically the Selachii division.

    The Selachii division is 200 million years old. One galactic year for Sol is 225 million years old. This means that sharks, as we know them, have not existed as a division for two galactic years, barely even for one! Horshoe crabs have been around for 250 million years nearly completely unchanged by evolution, so they have been around for one galactic year... But nobody ever seems to talk about them...

    Officially, what came before sharks are classified as a different division with "shark-like morphology", but they aren't sharks.

    Sharks have existed for longer than the North Star, though. So there's that.

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  • [–] 2 points 6 months ago

    The oldest fossils known are stromatolite fossils from 3.48 billion years ago. There are living stromatolites today. They predate Earth having significant oxygen in its atmosphere, because the cyanobacteria that formed them created the oxygen gas through photosynthesis from carbon dioxide. They've orbited the galaxy over fifteen times.

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  • [–] 43 points 6 months ago (6 children)

    If you get methanol poisoning for example from badly made liquor then the remedy for that is to drink ethanol (good liquor).

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  • [–] 21 points 6 months ago (4 children)

    I always keep a bottle of medicinal vodka around.

    Also glycol poisoning. Like if you drink antifreeze for your car, one treatment is to drink a bunch of alcohol so the liver processes the alcohol and not the ethelyne glycol.

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  • [–] 1 point 6 months ago (2 children)

    Is this for real? Any links? Not doubting you but it's always been a dark thought I can't push away about accidentally drinking that stuff.

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  • [–] 67 points 6 months ago (1 child)

    Time being a physical dimension in spacetime that can stretch and squish and 'now' isn't the same for every observer is probably the least intuitive one I know

    https://en.wikipedia.org/wiki/Relativity_of_simultaneity

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  • [–] 33 points 6 months ago (12 children)
  • [–] 23 points 6 months ago (8 children)

    wait they should make special ones that are like a squeaky toy and squeak when you squeeze them i would get those that would be really funny

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  • [–] 15 points 6 months ago (3 children)

    That would be like having sex with Wimp Lo from Kung Pow.

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  • [–] 4 points 6 months ago (2 children)
  • [–] 32 points 6 months ago (10 children)

    Trigger Warning: Existential Crisis

    spoilerEverything about us is young in the context of the wider universe. Human society, the human species, the planet earth, our solar system, our sun. We live near the dawn of creation, even though our universe feels unimaginably old compared to our brief lives. As the skies darken and all the stars burn out, that will take course over a time period longer than our individual solar system will last. When the last light goes out, time doesn't stop, no the universe goes on and there's an even longer period of endless empty inky blackness, the deep void. In the end, the universe may spend significantly more time as an endless dead void than it ever did as a universe with hope of life and at least one planet with confirmed organic life. There is no escaping it, and there is probably no way for our species to even survive and adapt to that era as it is.

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  • [–] 22 points 6 months ago* (last edited 6 months ago) (6 children)

    One of the possible answers to the Fermi Paradox is simply we're the first.

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  • [–] 14 points 6 months ago (1 child)

    We could be the great scourge of this part of the universe. Expanding recklessly through galaxies in the local group, leaving only the dead husks of stars that have been stripped of all usable energy. The exponential nature of scientific discovery means that not only do we have a head start, our head start compounds as time progresses. We become a horrific but very efficient war machine for the sole purpose of controlling and exploiting all available forms of energy for profit. We seem like we're on that path.

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  • [–] 7 points 6 months ago (1 child)

    To be fair its likely to be the most probable answer.

    Whilst intelligent life is probably quite common at specific points in time, it isnt common at the same time, and if it is the distances involved are so vast it means we will never know they exist.

    The best we can hope for in all likelihood is that we stumble on the ruins of some other species that died out millions of years ago.

    Or we stumble on a bunch of blue monkeys who are as intelligent as dogs, but in 50 million years they will be the ones finding the ruins of our civilisation.

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  • [–] 1 point 6 months ago*

    The flip side of this is that black hole entropy farming could keep simulated human consciousness alive for billions of years orbiting just outside the event horizon as we transition into the early stages of heat death, meaning that if this is possible, the statistically overwhelming portion of all human consciousness will exist in this state, making it a near statistic certainty that is what you are currently experiencing.

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  • [–] 3 points 6 months ago

    And it's the most likely solution. The universe has been hostile to life until very recently (on a cosmological scale). We know we're rather early in the goldilocks zone of universal habitability.

    I just find it odd when some people argue "humans aren't special enough to be that lucky. We're too stupid to achieve more". It's odd because calling humans stupid is actually arguing that humans are exceptional. Meanwhile you don't have to be exceptional to be lucky.

    And if you're wondering, it's Lex Friedman that argues this. And no, I don't listen to him anymore. I stopped once over 50% of the people he interviewed were just AI and crypto shills

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  • [–] 3 points 6 months ago

    That's not an answer, because if life is common, then the chance of us being the first is minuscule.

    Lets say that life can only form around main sequence G type stars (ie, like our sun). There is no reason to believe this is true, but lets say it is for this example. The universe is 14 billion years old, and the sun is 4.5 billion years old. Lets round it to 4 billion years old when life first formed.

    Now, the earliest G type stars formed approximately 1 billion years after the universe formed. Lets say that life can only develop when those stars were at least 4 billion years old. That puts the earliest possible scenario where life formed at 5 billion years after the universe formed, and that was 9 billion years ago. Low balling it, there are approximately 7 billion g type main sequence stars current in our galaxy.

    All together, that means the chance of us simply being the first is very low, and if we are the first, then life isn't common, and if life isn't common, the underlying reason for that is the answer to the fermi paradox.

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  • [–] 58 points 6 months ago (6 children)

    Everything about fecal transplant. Or maybe just the fact that it is even a legitimate medical procedure

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  • [–] 27 points 6 months ago (3 children)

    You can see where the pacific ocean meets the atlanic ocean

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  • [–] 26 points 6 months ago (3 children)

    Every single one of us is travelling through space on a tiny speck of dirt, circling a permanent explosion that doesn't know how to stop itself at 30km/s.
    That explosion and multiple specks of dirt besides our own dance around the center of the galaxy in a complex ballet with 200 billion other permanently exploding balls of fire and plasma, many of which are sizeably larger than ours and also have collected pieces of dirt circling around them, at a speed of 200km/s. The center of this agglomeration of giant balls of fire and dirt is a... thing... that is in itself so massive it can't help eating everything that comes near including suns, light, and the concept of time.

    And there, travelling around the center of the galaxy at 200km/s, spiraling around your sun at 30km/s, there is you. And somehow you have to work tomorrow.

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  • [–] 23 points 6 months ago (3 children)

    The Kings Chamber in the great pyramid of Egypt maintains an average temperature of 68°F (20°C).

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  • [–] 23 points 6 months ago

    Everything that's made of atoms is 99.9999999% empty (if it is indeed correct, I don't have much scientific knowledge)

    https://medium.com/illumination/why-solid-matter-is-mostly-empty-space-03f42e95c03f

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