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    Thread: The Garden Worlds article
Post: RE: The Garden Worlds article

The real challenge is not the pressure. The critical point of water is far less than say, the pressure in the Mariana Trench where macroscopic organisms live. No, the real challenge is temperature.
MichaelPoole Encyclopaedia Galactica Articles 13 203 06-14-2022, 06:59 PM
    Thread: The Garden Worlds article
Post: RE: The Garden Worlds article

What I find most challenging - and interesting! - about envisioning life based in supercritical water is the chemistry tbh. Supercritical water is a great solvent and in deep ocean worlds may even be ...
MichaelPoole Encyclopaedia Galactica Articles 13 203 06-14-2022, 09:49 AM
    Thread: The Garden Worlds article
Post: RE: The Garden Worlds article

The Astronomer Wrote: (06-10-2022, 10:06 AM) -- MichaelPoole Wrote: (06-10-2022, 10:02 AM) -- The Garden World article has many potentially very interesting and cool planets, including biospheres us...
MichaelPoole Encyclopaedia Galactica Articles 13 203 06-10-2022, 10:15 AM
    Thread: The Garden Worlds article
Post: The Garden Worlds article

The Garden World article has many potentially very interesting and cool planets, including biospheres using supercritical water, CO2 or a carbon monoxide-hydrocarbon mix as a liquid medium. The only p...
MichaelPoole Encyclopaedia Galactica Articles 13 203 06-10-2022, 10:02 AM
    Thread: ArcBuilders universe
Post: ArcBuilders universe

Hello, anyone remembers the universe and perhaps has some archive links about it please? It seemed to have disappeared from the Internet, which is really sad. I loved the setting, and I preferred the ...
MichaelPoole Books, Games, Movies, and TV 2 744 12-30-2021, 12:31 PM
    Thread: Mnemosyne - a picture of Solar System in the 27th century
Post: RE: Mnemosyne - a picture of Solar System in the 2...

Drashner1Hm. Ok. Based on the above, my sense is that any feedback anyone provides will simply be dismissed or after-the-fact rationalized away (using information you failed to provide in the first pl...
MichaelPoole General Off-topic Discussion 21 18,337 06-18-2020, 11:57 AM
    Thread: Naphthalean worlds
Post: RE: Naphthalean worlds

What would be the atmosphere of such worlds? Plenty of CO, hydrogen (on higher mass worlds) I assume?
MichaelPoole General Setting Discussion 15 241 05-28-2020, 01:46 AM
    Thread: Mnemosyne - a picture of Solar System in the 27th century
Post: RE: Mnemosyne - a picture of Solar System in the 2...

Drashner1 Wrote: (05-19-2020, 02:04 AM) -- Starting from that number and ignoring emigration from Earth we are looking at 498 years for population to grow. At a growth rate of 1.2% we end up with 38...
MichaelPoole General Off-topic Discussion 21 18,337 05-25-2020, 08:44 AM
    Thread: AreanXeric planet subtype
Post: RE: AreanXeric planet subtype

stevebowers Wrote: (05-24-2020, 03:20 AM) -- these worlds could come in many types, from nearly Gaian to nearly LithicGelidian. -- That's very interesting, are there any examples of these 2 extreme...
MichaelPoole Encyclopaedia Galactica Articles 23 278 05-24-2020, 04:03 AM
    Thread: AreanXeric planet subtype
Post: RE: AreanXeric planet subtype

Back on topic, just how varied are Arean worlds? How different from Mars can they get?
MichaelPoole Encyclopaedia Galactica Articles 23 278 05-24-2020, 02:21 AM
    Thread: The World Garden
Post: RE: The World Garden

Both a question and a suggestion kinda - can some concievable form of exotic life exist in flowing "dirty" ice? That is, solid water or other substance with something dissolved in it?
MichaelPoole Encyclopaedia Galactica Articles 182 3,219 05-21-2020, 05:14 AM
    Thread: The World Garden
Post: RE: The World Garden

dangerous_safety Wrote: (05-17-2020, 08:48 AM) -- MichaelPoole Wrote: (05-17-2020, 07:30 AM) -- Hmm, how about straight up silicon biochemistry for  the NaCl solvent life? Isaac Arthur said in his v...
MichaelPoole Encyclopaedia Galactica Articles 182 3,219 05-17-2020, 08:53 AM
    Thread: The World Garden
Post: RE: The World Garden

Hmm, how about straight up silicon biochemistry for the NaCl solvent life? Isaac Arthur said in his video on exotic biochemistries that silicon based life may exist in liquid rock and use aluminium i...
MichaelPoole Encyclopaedia Galactica Articles 182 3,219 05-17-2020, 07:30 AM
    Thread: Mnemosyne - a picture of Solar System in the 27th century
Post: RE: Mnemosyne - a picture of Solar System in the 2...

Dfleymmes1134 Wrote: (05-16-2020, 02:06 PM) -- I think it's a little weird that the kuiper hegemony has "pirate" raids on mercury, given how relatively far they'd have to travel compared to targets. ...
MichaelPoole General Off-topic Discussion 21 18,337 05-17-2020, 06:45 AM
    Thread: Mnemosyne - a picture of Solar System in the 27th century
Post: RE: Mnemosyne - a picture of Solar System in the 2...

1. Do you realize that the world population as long into the past as Mnemosyne is in the future (630 years) was just 350-400 million while now it is 7.8 billion? As wiki says, it took over 200,000 yea...
MichaelPoole General Off-topic Discussion 21 18,337 05-17-2020, 06:36 AM
    Thread: The World Garden
Post: RE: The World Garden

dangerous_safety Wrote: (01-17-2020, 02:46 PM) -- - A hot molten salt (NaCl) ocean world, with very rapidly metabolizing algae-like blooms visible from orbit, poping up and dissapearing over the cour...
MichaelPoole Encyclopaedia Galactica Articles 182 3,219 05-17-2020, 03:56 AM
    Thread: AreanXeric planet subtype
Post: RE: AreanXeric planet subtype

Back on topic, I imagined and sketched some trajectories on your diagram. Are they possible and if so, how likely are they? Image: Trajectories: Light blue: Rhean AquaGaian -> (drier)Rhean A...
MichaelPoole Encyclopaedia Galactica Articles 23 278 05-16-2020, 07:04 AM
    Thread: Mnemosyne - a picture of the mid-27th century Solar System
Post: RE: Mnemosyne - a picture of the mid-27th century ...

I'd like the mods to please delete this as I posted it here in what I think is the more approperiate section: https://www.orionsarm.com/forum/showthread.php?tid=4649
MichaelPoole Other Media 1 56 05-16-2020, 03:24 AM
    Thread: Mnemosyne - a picture of Solar System in the 27th century
Post: RE: Mnemosyne - a picture of Solar System in the 2...

Drashner1 Wrote: (05-15-2020, 01:25 PM) -- So, I had some time tonight and decided to start taking a look at these files. However, it appears that in order to see them I am required to add a tab t...
MichaelPoole General Off-topic Discussion 21 18,337 05-16-2020, 03:10 AM
    Thread: AreanXeric planet subtype
Post: RE: AreanXeric planet subtype

I see! This is a bit off topic but how do Apnean bodies like Luna and Mercury evolve? Luna may have had an atmosphere for over 70 million years and even some liquid water early in its history https://...
MichaelPoole Encyclopaedia Galactica Articles 23 278 05-15-2020, 11:00 AM