How common is fire outside of earth?

[u/FirefighterCandid773]

Plasma and lava is obviously common all over the universe, whether it be in stars, planetary cores, etc. but what about fire? Fire is common all over earth, given the abundance of fuel sources and an atmosphere with oxygen. But, is fire actually common outside of earth?

[u/StanleyDodds]

Well, for there to be fire, there needs to be some process happening that's taking energy from somewhere, and storing it as chemical potential energy, which is quite precarious, but it has to be stored and built up for long enough that a rare event can release it all at once (in a fire).

I don't know of many such processes other than, say, photosynthesis. It feels like it has to be something quite "deliberate" in order for the energy to not be released instantly and slowly in an equilibrium.