06-01-2020, 09:44 PM | #31 | |
Join Date: May 2010
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Re: [Space] Star system with thirty-six inhabitable worlds?
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06-02-2020, 09:48 AM | #32 | |
Join Date: Feb 2007
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Re: [Space] Star system with thirty-six inhabitable worlds?
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So, probably, are our current ones. We have multiple examples now, which is better, but with what are probably heavy 'selection biases', meaning they are not necessarily representative. We really can't assign much in the way of believable probabilities because our information is so limited.
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06-02-2020, 09:57 AM | #33 |
Ceci n'est pas une tag.
Join Date: Jul 2005
Location: Vancouver, WA (Portland Metro)
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Re: [Space] Star system with thirty-six inhabitable worlds?
Luminosity determines Goldilocks zone.
What does stellar mass determine? I remember using two Sol-size stars in very close orbit to create (to my amateur eyes) a plausible way to have two habitable planets in a system (one close to perfect, one slightly extreme; chilly/tropical or warm/icy). I think it determines lifespan of a star, the time available for the system to evolve an ecosystem.
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06-02-2020, 10:00 AM | #34 |
Join Date: Jan 2005
Location: Gothenburg, Sweden
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Re: [Space] Star system with thirty-six inhabitable worlds?
Stellar mass determines luminosity and lifespan.
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06-02-2020, 10:18 AM | #35 |
Hero of Democracy
Join Date: Mar 2012
Location: far from the ocean
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Re: [Space] Star system with thirty-six inhabitable worlds?
Trappist-1 was the universe trolling all of the models we had up until then.
The habitable zone equations and the 1.4 ratio should hold. Trappist-1 is a beautiful mosaic of stacked resonances. Outside of that, the ratio holds, and the black body temperatures are not going to change much either. I build a graphical star system editor using the gurps:space equations, and the luminosity of the star doesn't change the size of the goldilocks zone in terms of orbital ratios. There is a rule in space that sets a minimal orbital distance between planets, but that's one rule from space that the new exoplanet data seems to throw out, and I'm frankly not surprized. So you can fit two planets into the goldilocks zone of gurps space. Also, garden/ocean planet range in gurps space and astronomy habitable zones are related but different concepts. One thing Trappist-1 did really well was demonstrate how fast and loose the "Goldilocks" Zone astronomers had been using was.
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06-02-2020, 10:33 AM | #36 |
Join Date: Jan 2005
Location: Gothenburg, Sweden
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Re: [Space] Star system with thirty-six inhabitable worlds?
You may be able to throw in three habitable orbits, depending on how thick the atmosphere is (and its composition).
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“When you arise in the morning think of what a privilege it is to be alive, to think, to enjoy, to love ...” Marcus Aurelius |
06-02-2020, 07:04 PM | #37 |
Join Date: Mar 2013
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Re: [Space] Star system with thirty-six inhabitable worlds?
I shouldn't have to say it but this sort of system works best as the only system in your setting. As a one-off system to encounter it's interesting but not really that impactful and a the capital of some grand empire/home base system for the players it has this nice semi-mystical vibe to it, but it really shines as the only system in a setting.
Now any race/civilization that evolves in such a system is going to be much more interested in (space) flight then we are, funding will be give much earlier and much more freely, so colonies will be set up with the minimum required tech to establish them. At this point the questions become things like how low can I set the gravity to encourage spaceflight without encountering future problems? |
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