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Joined 9 months ago
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Cake day: September 28th, 2023

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  • Well no danger of that. We certainly cannot do it on terrestrial scales. No way, no how. Not even with fusion and a collider ring wrapped around the equator. It still requires vastly higher energies.

    Even if we could make a kugelblitz black hole right here, it would instantly fall out of reach through the Earth while barely interacting at all with any other particles. On the Planck scale, particles are mostly empty space. We wouldn’t even get to study it.

    The best way to build one is to surround a star with millions of orbital mirrors, then focus all the light onto a single point in space, with an accuracy of nanometers, if not picometers. Focusing enough energy on a single point will cause a tiny black hole to form. It’s probably impossible to do by accident.




  • Olhonestjim@lemmy.worldtoAsklemmy@lemmy.mlDo you believe in Aliens?
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    3 months ago

    I’m not convinced they’re visiting us. None of the reports I’ve seen appear credible. But non-interference is often critical to scientific study. They could just be doing a decent job at hiding from us.

    If they’re out there, I’d be shocked if they wouldn’t visit. Our solar system has been showing life signs for 3.5B years, and technological signs for about a century or so. There aren’t apparently many planets like ours around. We are a very tempting target for study.

    It appears to be quite difficult to develop a spacefarring civilization. But there are credible models for sailing light beamed from stars, and even gravity surfing orbiting black hole pairs. The vast energies required for interstellar travel should be impossible to conceal. We ought to already be able to see them out there, if they’re close.

    13.5B years is an eyeblink in the potential age of the Universe. We developed early. Perhaps not first, but very early. Intelligence and technology are difficult and expensive to develop. Our hubris may destroy us. We might easily be alone in our local neighborhood. Technological civilizations may still be rare. But once they go interplanetary, there are few ways for such a civilization to go extinct.

    I’m fairly confident they’re out there somewhere. I’m sceptical that they’re close. We may be the first in our galaxy, or even the Local Group. Who can say? I don’t know.







  • Olhonestjim@lemmy.worldtoAutism@lemmy.worldRespect
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    3 months ago

    Yeah, the fact she’s a teenager doesn’t invalidate her perspective at all, no more than the fact she’s a woman. Teenagers DO have more insight into the injustices of society than adults who have grown comfortable with their advantages in it. Wisdom and foolishness both develop early, and only rarely do they swap with age. Her insight is wise, and it’s foolish of you to dismiss her.