/sci/ - Science & Math

Reading terraforming autists going on about SF6.
Go look it up, actually ultra heavy gas, perfectly safe, elements readily available in situ
Why not flood a lavatube with this gas, where it would sit at the bottom undisturbed?
Trying to do calculations but I'm sure they are fucked and likely overestimating.
At 750m depth with one third gravity, you'd be looking at about 0.15 atm, well above the Armstrong limit of 0.6 atm. But that's using the density value at room temp, so I'm guessing the end value is much higher at colder temperatures.
Can't find anything on the deepest lavatubes or what the density of SF6 is at say -40°C.

Still would be neat, no need for airlocks, could just drive straight in. People could walk around inside wearing jackets and oxygen rebreathers.