• iAvicenna@lemmy.world
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    18 days ago

    is this the aliens going “welp they elected Trump again time to press the reset button”

  • vane@lemmy.world
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    18 days ago

    How many people need to die before someone hits the Earth with a rock ?

    • chuckleslord@lemmy.world
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      18 days ago

      A direct hit would be about the size of a fission nuclear bomb. Devastating for a city, but no regional or country-wide impacts, let alone globally

      • ChexMax@lemmy.world
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        18 days ago

        How long before impact would we learn where the hit is going to be? A real lotto scenario, but my money is on the ocean. What happens if it hits the ocean?

        • chuckleslord@lemmy.world
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          18 days ago

          Here’s the possible impact sites. Ocean is a pretty good chance, and that would mean even less impact. If it’s close to shore, then there’s a chance for waves, but that’s about it. Locations are based on the timing of when the asteroid will arrive in 2032, not the shape of the orbit which we have fairly good accuracy on (that’s why the “beam” of possibilities is so narrow)

          Currently, we’re unable to directly observe the asteroid due to the distance, but we do have a good idea on what its orbit looks like, so any updates on the odds is coming from past, unintentional observations on the asteroid (we took a photo of something else in the sky, but know that the asteroid should be in that photo).

          When the asteroid passes by again in 4 years is when we’ll likely get the most info on location/impact before the potential impact in 2032.

          All this info comes from this Scott Manley video. He’s an excellent space science educator (and KSP player)

          • ChexMax@lemmy.world
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            17 days ago

            Wow what a great response, thank you so much! I had no idea we had such a Small beam. I guess the downside of that is the rest of the world won’t be as concerned with figuring out how to stop it as they would if it were more random.

  • maegul (he/they)@lemmy.ml
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    19 days ago

    From the article

    In a new update, the space agency has increased the chances of asteroid 2024 YR4 colliding with Earth, with the probability of impact rising to 3.1 per cent or one-in-32 odds of impact — the highest probability of a collision yet.

    IE - 3%.

    3% events happen all of the time!

    The article stresses that this probability has been going up over the past year or so, which is likely neither here nor there, but I can totally understand how it’s alarming in a post-COVID world.

    • laranis@lemmy.zip
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      18 days ago

      Statistics isn’t my strong suit. What’s the probability of the probability increasing given that it has been increasing over time? Should we project the future probability to include this growth?

      • bandwidthcrisis@lemmy.world
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        18 days ago

        Scott Manley said in his video that it would almost certainly increase right up to a point where it would (probably) drop to 0.

        Imagine the asteroid position is going to be in a range 1 to 100. Earth will be at position 31 when passes. That’s a 1% chance.

        Now I tell you that it’s actually a 10 to 90 range ( like they predict the asteroid a bit more precisely).

        The chance is now 1 in 80 or 1.25% It went up!

        Now I say I’ve got more info, the number is 30 to 70. The chance is 1/40, 2.5% time to panic, it’s getting worse!

        Next it’s 40 to 70. That doesn’t include 31. The chance just dropped to 0.

        So the increase is showing a more accurate prediction still includes hitting earth, but at some point that prediction might show that it will miss.

      • maegul (he/they)@lemmy.ml
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        18 days ago

        Really no idea personally. My hunch would be that it’s technically a fuzzy problem (what’s the system being measured here exactly?) but also one around which we have some experience and wisdom established by now. Otherwise, the probability has changed like twice or three times, so any statistical inference would likely be close to meaningless with that little data.

        • Monument@lemmy.sdf.org
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          18 days ago

          No worries! We’re working on that, too!
          Melting the ice caps shifts mass, and therefore, gravity, away from the largely unpopulated poles and nearer to where the people live.

          But this problem will not solve itself with any one solution. We must also petition our government to act now to stage a mission to nudge the asteroid into earth’s orbit! With modern science, we can do this.
          I believe in humanity’s power to defeat humanity!

    • LostXOR@fedia.io
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      19 days ago

      A large enough impulse could knock it onto an impact trajectory in 2028. “Large enough” would be absolutely gigantic though, and we have to catch up with it, making it quite impractical. It would be cheaper to just build some more multi-megaton nukes for the same effect.

        • LostXOR@fedia.io
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          19 days ago

          That’s for changing the trajectory of the 2032 encounter by a few thousand km, not changing the 2028 encounter by 8 million km. And if we’re changing the 2032 encounter we can smack it as it goes by in 2028 instead of playing catch-up before then.

      • Monument@lemmy.sdf.org
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        18 days ago

        The one mentioned above is 2024 YR and is slated to pay a visit in 2032. The 2028 one is 1997 XF11, and poses no risk.
        (But I was confused, too - I only looked up because of the 2028/2032 discrepancy. I made a joke to my wife about emailing a state senator and suggesting they fund a mission to knock the asteroid into earth, so that they can help their constituents by ensuring that they no longer have a state to be a senator over. 2028 is during their term, and god willing, 2032 won’t be.)

          • Monument@lemmy.sdf.org
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            18 days ago

            Well, huh. TIL.

            Serves me right for half remembering something and assuming the first search result explains it.

          • Monument@lemmy.sdf.org
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            13 days ago

            Coming back to this: You mean to say we’ve got three years to execute a mission to give it a little nudge now, so we don’t have to give it a big nudge in 7 years? (Into earth’s orbit, of course.)

            • LostXOR@fedia.io
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              13 days ago

              Yep, the plan to redirect it, if needed, would’ve been to hit it as it went past in 2028. (Its orbit has been refined enough by now to be nearly certain it won’t hit the Earth).

    • Opinionhaver@feddit.uk
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      19 days ago

      What’s up with the school shooter mentality? You know that if you want to die you can just kill yourself and don’t need to take bunch on innocent people with you?

      • Jarix@lemmy.world
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        19 days ago

        A massive reduction of human life in earth would have insanely positive benefits for the future of human kind and life on earth.

        Just quantifiable proveable net benefits.

        Those facts are uncomfortable, but it would dead end a lot of much worse outcomes

        • Opinionhaver@feddit.uk
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          19 days ago

          This is a city killer, not a continent killer. Wishing for few hundred thousand innocent people to die is just pure evil - it has no effect on overpopulation.

            • AngryCommieKender@lemmy.world
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              18 days ago

              It’s currently moving at about 12,000 kph and will be slightly sped up to 17,000 kph if it actually hits us. That is not a significant enough portion of C to be anything but a city killer. This thing isn’t even a Tsar Bomba in terms of energy output. More like a Mark 17.

              • Jarix@lemmy.world
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                18 days ago

                https://lemmy.world/comment/15180729

                Regrub just said can we make it go faster, so i guess it would need to be increased much much more than 17,000 kph, which seems slow for galactic/cosmic speeds.

                Wonder how much more energy it would need.

                Someone get Randal Monroe on this stat!

                Lol

            • Opinionhaver@feddit.uk
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              18 days ago

              Well, it’s a problem that will solve itself. Most estimates say that the world’s popularion will peak around 2080 and start to decline after that.

              • Bizzle@lemmy.world
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                18 days ago

                I hadn’t seen those numbers, is it a result of anthropogenic climate change?

                • AngryCommieKender@lemmy.world
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                  18 days ago

                  More a result of countries managing to get over the industrial revolution population spike, and getting into the modern age. Once you have access to modern medicine, and the birth mortality and child mortality rates plummet, people stop having so many kids.

            • shalafi@lemmy.world
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              18 days ago

              Owls and rabbits aren’t the ones burning fossil fuels. Since I was born, 74% of the animals have gone.

              Yeah, overpopulation is long past, we’re at apocalyptic now.

                • shalafi@lemmy.world
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                  18 days ago

                  JFC you’re a child. Who do you think is doing all the consuming? Hint: It ain’t rabbits.

        • Nanook@lemm.ee
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          19 days ago

          Y’all don’t have loved ones? Just kill like 2700 billionaires and the world is a better place already. Fun fact, all dear leaders are on the same list.

          • Jarix@lemmy.world
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            18 days ago

            Can we strap a bunch of spacex rockets to it to achieve the needed speed? Probably not but the irony would be great

    • null_dot@lemmy.dbzer0.com
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      17 days ago

      What if it lands an the fascists and dust in the atmosphere cancels climate change for a couple of decades. Could that work?

  • sickday@fedia.io
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    19 days ago

    Would asking for it to both hit the Earth and for me to be right below the impact zone be asking too much?

    • Jarix@lemmy.world
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      19 days ago

      Unless you are a terrible person, yes.

      If it falls on a joint meeting of Trump and Putin who once again decided to have a meeting to discuss Ukraine without Ukraine that should be fantastic, and not at all asking too much. Hopeful musk is hanging out with bezos and Netanyahu and Xi are talking too. Really not asking enough if you think about it

  • Gladaed@feddit.org
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    17 days ago

    This is the expected path the probability is going to take. Scott Manley made a great video on that.

    Basically the area in which the asteroid is going to be includes the earth. When you shrink this area earth is going to take up more space, unless it left the cone. I.e. measurements increase the likelihood until they don’t.