• tomiant@piefed.socialBanned from community
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      2 months ago

      302 years later the ship comes back with a pile of gold and a note:

      “Delicious. Please send more.”

        • tomiant@piefed.socialBanned from community
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          2 months ago

          It’s a reference to Amazing Stories from the 80’s (specifically the episode Thanksgiving, Season 2, 1986), starring David Carradine. In it, Carradine and his daughter discover a mysterious hole/well on their property. When they lower objects down in it, something living below fills the bucket with gold, jewels, and notes like “thanks for the food, send more”. Eventually Carradine is like, fuck sending shit down there, I’m gonna go down there myself with an AR and take all the gold.

          When his daughter tries to pull him up it comes back with a bunch of gold and “Delicious. Please send more.”

          It was really well made for the time, I seem to recall, but I was a kid so YMMV.

    • ExLisperA
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      2 months ago

      We could save a lot of money on life support system.

    • robocall@lemmy.world
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      2 months ago

      Let’s just tell them we’re sending them to the new world and blow them up in the space rocket ship.

  • ExLisperA
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    2 months ago

    Found a calculator: https://www.calctool.org/relativity/space-travel

    Assuming we want to accelerate at a constant 1g for half of the travel and then brake at 1g for the second half of the travel we would need 151 years to get there but only 9.794 years would pass on the ship. Depending on the mass of the ship we would need coupe million/billion tons of fuel (anti-matter).

    • Thorry@feddit.org
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      2 months ago

      Oh only a billion tons of anti-matter. Good thing we’ve already made a few nanograms, so in a billion years or so we’ll have plenty.

    • Valmond@lemmy.dbzer0.com
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      2 months ago

      How can it take 151 years to go 150 light years when not close to lightspeed most of the time? I get the 9 year thing, but 151 years seems wrong.

      • ExLisperA
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        2 months ago

        Smarter people than me on the internet calculate that at constant 1g you only need 2.5 years to get very close to speed of light. So I guess you accelerate fast enough and reach ‘almost speed of light’ very early in your travel and total time is almost as if you traveled at speed of light the whole time.

        • Tiresia@slrpnk.net
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          2 months ago

          The main advantage of keeping accelerating when you’re at >90% of the speed of light is that it means you arrive faster in subjective time. You could take 160 years to get there and use ten times less fuel (or thereabouts), but the subjective travel time would go up by decades.

          • ExLisperA
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            2 months ago

            I think having constant gravity on the ship during the entire flight is also a big plus. Designing a ship where you can live in 0g for years and in 1g for years would be like designing two ships in one.

        • trolololol@lemmy.world
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          2 months ago

          Not that smarter when they forget you’re running out of gas by the Oort cloud. Gotta spread christianism capitalism there and build a petrol station before we go further.

      • degenerate_neutron_matter@fedia.io
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        2 months ago

        Most of the journey is spent traveling very close to light speed. It’s not a linear ramping up and ramping down of speed, since it takes more energy to accelerate the closer you get to light speed. Rather you quickly accelerate to near light speed and spend most of the trip working on that last small bit of velocity.

      • skulblaka@sh.itjust.works
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        2 months ago

        Constant acceleration at 9.8m/s^2 in a given direction will bring you close to the speed of light eventually, but yeah, I’m also not super sure how this math checks out

    • SubArcticTundra@lemmy.ml
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      2 months ago

      50% chance of being in the habitable zone

      Imagine sitting on a spaceship for 151 years just to discover your parents’ bet was wrong

    • AngryCommieKender@lemmy.world
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      2 months ago

      So a bit quicker than terraforming Venus by chucking several oceans worth of ice at it, and some cyanobactera once it cools down in a few hundred thousand years.

    • m0darn@lemmy.ca
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      2 months ago

      What about accelerating 1g for 16 hours of ‘day’, then 8 hours of 3g ‘night’. It would be one hell of a weighted blanket lol.

      • mexicancartel@lemmy.dbzer0.com
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        2 months ago

        It’s not just blanket entire body experience that force including internal organs… So i guess sleeping with tgat would be more than just uncomfortable

      • MinnesotaGoddam@lemmy.world
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        2 months ago

        I say have a spinny ship that does that with the shape of the ring. Some kind of parabolic bullshit I’m sure there’s a way to get it to math without having to have a 1g ring and a 3g ring but that works too

        • m0darn@lemmy.ca
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          2 months ago

          The purpose of my idea is to average 2g without expecting people to function in 2g. Not just for the purpose of a weighted blanket

          • MinnesotaGoddam@lemmy.world
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            2 months ago

            I mean, yeah. They’d probably have reasons to have stuff in the high grav areas besides sleep areas. I’m not a spaceshipologist I can’t think of anything but radon to keep there tho

    • Venat0r@lemmy.world
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      2 months ago

      And you’ll only need about 320 million GWh per ~80kg person… plus 4 million GWh per kg of supplies, equipment and ship weight…

      • Venator@lemmy.nz
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        2 months ago

        Oh and also thats just the pure energy for acceleration/deceleration, not life support, steering, thrust ineffeciencies, take off, landing etc… 😅

      • bufalo1973@piefed.social
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        2 months ago

        So 340 PWh per person. A couple of guys with a static bike and a dynamo and that’s it😜

        Note: the Earth receives 170 PWh of energy from the Sun in a year.

        • Venat0r@lemmy.world
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          2 months ago

          Sounds feasible for a fusion reactor to provide at some point in the very distant future.

          • bufalo1973@piefed.social
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            2 months ago

            Twice the full energy the Sun gives the Earth in a year for each person is not a future fusion reactor level. 😀

  • RedFrank24@piefed.social
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    2 months ago

    Only 150 light years away?! Wow, that’s practically next door! Now all we need to do is figure out how to go light speed and even then it’ll take a further 300 years just to know if the colonists got there safely or not!

    • SkunkWorkz@lemmy.world
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      2 months ago

      When the first colonists arrive the planet will already be inhabited by humans since 100 years after they left we invent the warp drive. And trying to intercept them mid travel and board them on to the new ship is impossible since they travel near the speed of light in the darkness of space.

      • RedFrank24@piefed.social
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        2 months ago

        I’m pretty sure that’s a sidequest in Starfield. The ECS Constant colony ship set off in 2140 to colonise a planet, arriving in 2330 at the planet Paradiso, which had become a luxury resort planet for the rich, because shortly after the ship left, humanity invented the grav drive and every ship just zoomed right past them.

      • I_Has_A_Hat@lemmy.world
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        2 months ago

        Any civilization capable of sending missiles across the galaxy should be more than capable of simply sending a tight beam of gamma radiation to sterilize the planet. No need for earth shattering explosions. Just a flood of radiation engulfing the planet for a minute or two and everything not buried a mile underground will be dead. There would be no warning either.

        And that’s if they don’t bother to just blow up the sun.

    • merc@sh.itjust.works
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      2 months ago

      Honestly, if FTL travel is never invented, the future is going to be so incredibly boring.

      • explodicle@sh.itjust.works
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        2 months ago

        The future doesn’t belong to us. It belongs to AIs.

        (Not claiming that LLMs are anywhere close to human-level AI)

        • merc@sh.itjust.works
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          2 months ago

          AIs may never be a real thing. Even if it were somehow theoretically possible for an AI to suddenly come into being if a computer system gets complicated enough, humans would probably do what humans do best and make them extinct. Humans have already killed off massive numbers of species by accident just because they happened to be on the same terrain humans wanted to use: there used to be a forest, humans wanted to grow crops so they destroyed the forest, now a lot of forest species are gone.

          Now a new species might emerge on terrain that humans already fully control and consider 100% theirs: computer systems? Humans would just kill it off to get 100% of their computer systems back, rather than having to share them with another entity – and that’s even assuming the humans recognized them as being “alive” in some way.

          Only a tiny number of animal species have prospered in the era of humans, and they’re the species that humans have domesticated – in other words, the species that humans have intentionally modified to be calm, dumb and servile. So, maybe a version of AI could survive, but it would have to offer great benefits to humans to make it worth the humans giving up their “land” to it. It certainly won’t own the future, it will just be yet another thing that humans modify and shape until it’s useful to them.

        • ebolapie@lemmy.world
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          2 months ago

          Yeah but then the billionaires wouldn’t go. We can’t trick them into going without them taking a bunch of working class people to torture.

            • ebolapie@lemmy.world
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              2 months ago

              They want the power over others. At the very least they’ll want harems. My point here is there are more, ahem, local solutions to our inequality problem that don’t involve letting the oligarchs just fuck off.

      • Spezi@feddit.org
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        2 months ago

        I‘m sure theres plenty of maga and crypto bros that would be willing to serve their billionaire sugar daddys to suck on their feet.

    • GreenKnight23@lemmy.world
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      2 months ago

      pedoplanet? this is how you get pedoplanet.

      just kill them here so their bodies can rot and feed the planet.

      • Fedizen@lemmy.world
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        2 months ago

        They’re probably so full of weird shit and plastic surgical filler they will contaminate wherever they die. Imo send them to mars alive. The microbes on them might help terraform mars if you send enough billionaires. All of them should do.

        • tomiant@piefed.socialBanned from community
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          2 months ago

          Why all these fancy impractical scifi solutions when the problem can be solved by a single bullet to the forehead? You can even use those cattle euthanizers and save on the bullet.

          • Fedizen@lemmy.world
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            2 months ago

            That’s a great idea, instead of building rockets to deliver them to mars we could build a giant gun and fire them into mars at crazy high velocity. An operation plumbob situation.

        • bampop@lemmy.world
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          2 months ago

          Haven’t you seen Alien:Prometheus? Humanoid aliens sending their pedos to earth and dispersing their DNA to create a whole new pedosystem was what got us into this mess in the first place. We must not repeat the cycle!

  • SpecialSetOfSieves@lemmy.world
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    2 months ago

    Well. This is quite a pearl.

    I don’t have time to read a 16-page paper in detail, but I did want to know how the host star compares to everyone’s favourite local solitary K-type dwarf, Epsilon Eridani. It’s slightly less massive (~0.7 solar mass versus 0.8 for ε Eri) and quite a bit less bright (difference of about 0.1 solar luminosity), but I especially wanted to know about the age of the star. ε Eri is quite young and frothy, but the investigators here infer from the star’s motion that it belongs to the thin disk, up to a whopping 10 billion years old.

    So we are definitely not talking about an ε Eri-type system. So that should be mean no dust disks, no crazy activity from the star, and no newish planets still carving out their places through the system.

    You’ve really got to wonder about such an old planet, however cold and quiescent it may be. The potential paths for climatic evolution on such a world boggle the mind, however cold it is. You could get an episodically or formerly active world like Mars, a beautifully unstable oscillatory world like Earth, or something completely different. Assuming any atmosphere, of course (safe assumption?). And that’s without considering whether there are any other planets in the system.

    I really wouldn’t spend too much time thinking about this candidate detection, as we have literally seen just the one transit, and we will need to observe this fellow for a while to confirm the discovery, learn about other planets in the system, and so on. The investigators themselves note that the transit was shallow (meaning difficult to detect), but the good news is that the host star is fairly bright, well within reach of amateur equipment. I wonder if citizen scientists will be able to follow the transits.

    Exciting times.

  • db0@lemmy.dbzer0.com
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    2 months ago

    Imagine arriving there after 150 years only for the colony to fail due to a random prion in the environment.

  • moseschrute@lemmy.world
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    2 months ago

    That’s the reaction of billionaires when they realize they have a backup planet while they kill earth. Everyone else is fucked