The thing with methane and combustibility is... if there's very little free oxygen in the atmosphere, fire isn't going to be that much of an issue. Because without something to combine exothermically with, you're just not going to get fire.
In our experience, the most common such reactant is, of course, oxygen.
If there's no/minimal oxygen beyond occasional trace quantities in the Spiders' atmosphere, and methan (or whatever) is the most common reducing component...
(Asimov actually wrote a mystery that depended on this. An arsonist from Earth was visiting a facility on Titan, and booby-trapped the wrong gas cylinder...)--
"I give you the beautiful... the talented... the tirelessly atomic-powered...
R!
DOROTHY!
WAYNERIGHT!
--
Sucrose Octanitrate.
Proof positive that with sufficient motivation, you can make anything explode.
In our experience, the most common such reactant is, of course, oxygen.
If there's no/minimal oxygen beyond occasional trace quantities in the Spiders' atmosphere, and methan (or whatever) is the most common reducing component...
(Asimov actually wrote a mystery that depended on this. An arsonist from Earth was visiting a facility on Titan, and booby-trapped the wrong gas cylinder...)--
"I give you the beautiful... the talented... the tirelessly atomic-powered...
R!
DOROTHY!
WAYNERIGHT!
--
Sucrose Octanitrate.
Proof positive that with sufficient motivation, you can make anything explode.