5 ms·

Wasn't there a sweet spot somewhere in the Venus atmosphere that's more Earth sauna like, than the hellish surface of Venus?

3pt14159 6y ago
Last time I checked, which was about four years ago, the conditions on Venus 40km were such that humans could walk around outside with nothing more than an oxygen supply.
- metalliqaz 6y ago
  that is true although there is also a ton of acid up there
  - Symmetry 6y ago
    At 50 km up only 7 ppm https://selenianboondocks.com/2013/11/venus-isru-what-do-we-have-to-work-with/ https://selenianboondocks.com/2013/11/venus-isru-what-do-we-... Which as far as I can tell isn't terrible if you don't breath it in and if you do the official allowed exposure time is 10 minutes for 5 ppm. I would recommend you wear goggles in addition to breathing equipment, though.
    - kortex 6y ago
      7 ppm of atomized H2SO4 will definitely sting a bit. That's roughly 7 g/m^3, TLV for sulfuric acid mist is 1 mg/m^3. Survivable but you would want to minimize time in it.
    - dragonwriter 6y ago
      > Which as far as I can tell isn't terrible if you don't breath it in and if you do the official allowed exposure time is 10 minutes for 5 ppm. Presumably that's 5ppm under terrestrial conditions, Venus at 40km has substantially higher pressure, more than is explained by the higher temperature alone, so any given ppm is a greater number of molecules per cm³, right?
- cdelsolar 6y ago
  well i'm not sure they could "walk around" on gas...
  - LostTrackHowM 6y ago
    Zeppelins and jetpacks!
- dragonwriter 6y ago
  > the conditions on Venus 40km were such that humans could walk around outside with nothing more than an oxygen supply. The Wikipedia page on Venus's atmosphere suggests that at that altitude Venus's atmosphere is a sulphuric acid haze at 110°C and about 2atm of pressure, which, even if there was something to walk on, doesn't sound like you'd be able to walk around with just an oxygen supply for very long. https://en.m.wikipedia.org/wiki/Atmosphere_of_Venus https://en.m.wikipedia.org/wiki/Atmosphere_of_Venus

3pt14159 6y ago

Last time I checked, which was about four years ago, the conditions on Venus 40km were such that humans could walk around outside with nothing more than an oxygen supply.

metalliqaz 6y ago
that is true although there is also a ton of acid up there
- Symmetry 6y ago
  At 50 km up only 7 ppm https://selenianboondocks.com/2013/11/venus-isru-what-do-we-have-to-work-with/ https://selenianboondocks.com/2013/11/venus-isru-what-do-we-... Which as far as I can tell isn't terrible if you don't breath it in and if you do the official allowed exposure time is 10 minutes for 5 ppm. I would recommend you wear goggles in addition to breathing equipment, though.
  - kortex 6y ago
    7 ppm of atomized H2SO4 will definitely sting a bit. That's roughly 7 g/m^3, TLV for sulfuric acid mist is 1 mg/m^3. Survivable but you would want to minimize time in it.
  - dragonwriter 6y ago
    > Which as far as I can tell isn't terrible if you don't breath it in and if you do the official allowed exposure time is 10 minutes for 5 ppm. Presumably that's 5ppm under terrestrial conditions, Venus at 40km has substantially higher pressure, more than is explained by the higher temperature alone, so any given ppm is a greater number of molecules per cm³, right?
cdelsolar 6y ago
well i'm not sure they could "walk around" on gas...
- LostTrackHowM 6y ago
  Zeppelins and jetpacks!
dragonwriter 6y ago
> the conditions on Venus 40km were such that humans could walk around outside with nothing more than an oxygen supply. The Wikipedia page on Venus's atmosphere suggests that at that altitude Venus's atmosphere is a sulphuric acid haze at 110°C and about 2atm of pressure, which, even if there was something to walk on, doesn't sound like you'd be able to walk around with just an oxygen supply for very long. https://en.m.wikipedia.org/wiki/Atmosphere_of_Venus https://en.m.wikipedia.org/wiki/Atmosphere_of_Venus