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May 31, 2023 at 2:24 comment added Kav How about an atmosphere of carbon tetrafluoride and hexafluoroethane. Carbon can be had from Venusian atmosphere but fluorine atoms?
May 31, 2023 at 2:18 comment added Kav Since @L.Dutch brought the graph, can we have enough Xenon on the moon to at least have an atmosphere?
Apr 9, 2023 at 4:02 comment added Harry Mu I was thinking: if the species didn't come to exist on there through evolution, then it could be that the magnetic field was a megaproject by the arriving species to set up protection to create a good enough atmosphere i.e. solar powered electromagnets at each pole or even embedded into the core something like the magnetic version of the three gorges dam
Apr 8, 2023 at 1:25 comment added ShadowRanger @Hearth: Which makes sense; we're talking about how much energy the atmosphere has to aid in escaping the gravity well; doesn't matter how hot the core is except insofar as it heats the atmosphere. Eyeballing it, Earth is at 290 K, which seems reasonable for surface temp (it's low 60s Fahrenheit, mid-upper teens Celsius).
Apr 7, 2023 at 22:42 comment added Hearth @Zags Looks like surface temperature--earth's core is definitely hotter than 300 K.
Apr 7, 2023 at 16:53 comment added Zags The chart is very cool but warrants a source and explanation. Which temperature is the x-axis (planet core or surface)? Do the colored bands mean this is the conditions at which this molecule will be retained in the atmosphere (I'm assuming so, but it took some staring to figure it out)? What are the unlabeled bands at the top of the diagram (above hydrogen)? How does a magnetic field affect it?
Apr 7, 2023 at 8:57 comment added cconsta1 This is a more thorough explanation than mine. Thank you very much!
Apr 7, 2023 at 8:49 history answered L.Dutch CC BY-SA 4.0