• josephc@lemmy.ml
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    1 day ago

    If we could accelerate at a constant 1g, flip, and decelerate at a constant 1g, the trip would take ~152 years… from Earth’s perspective. If you were onboard, time dilation would make the trip about 10 years.

  • SpecialSetOfSieves@lemmy.world
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    3 days 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.

    • GreenKnight23@lemmy.world
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      3 days 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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        3 days 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.

        • bampop@lemmy.world
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          3 days 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!

      • DancingBear@midwest.social
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        3 days ago

        I don’t like comparing inter and intra and extra species behavior to what humans call rape. Not a fun path to go down.

  • M137@lemmy.world
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    3 days ago

    137 is my favorite and lucky number, so I’m gonna decide this is the one that we find life on.

  • moseschrute@lemmy.world
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    3 days ago

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