Would animals from Earth be able to survive and reproduce on this planet?
Some details about the planet and its moon plus the host star.
Star: 0.85 Sol, 0.54% of the Sun's luminosity
Planet: 0.04926 (M⊕) 4836 km, 0.34 G, Orbits the host star at 0.901 AU.
The atmospheric pressure on this planet is 0.20% of the Earth's which consists of:
85.4% O2, 9.16% CO2, 3.89% N2, 1.2% SO2, H20: 332 ppm.
Moon: 0.002 (M⊕) 770 km, 0.12 G, Semi major axis of the moon is 26415 km. Orbital eccentricity of the moon is 0.031.
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1 answer
Atmospheric pressure 0.20% of that on Earth's surface?
Take a look at the phase diagram for water:
0.20% of 1 atmosphere pressure means about 2 millibar. At that pressure, liquid water cannot exist; at about -20 degrees C, it sublimates from ice to vapour. At that pressure, below -20C, water is a solid; above -20C, it is a vapour.
No higher life on Earth is equipped to deal with such conditions.
It is possible that some extremophiles may be able to survive by hibernating, but I very much doubt that they will be able to reproduce under such conditions.
So the answer is no, animals from Earth would not be able to survive and reproduce under such conditions.
And that's before we even consider the composition of the atmosphere.
In order to be able to have the three phases of water that we are used to (solid, liquid and vapour) the temperature and pressure have to be between the triple point and the critical point, so somewhere in the range 611.657 Pa (at no less than 273.16 K) to 22.064 MPa (at no more than 647 K).
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