Question

in a vaccum there is no oxygen then how combustion occures in space​

Answer 1

Answer:

In space, of course, you can't have any fires because there isn't any oxidizer (i.e. oxygen) to sustain the combustion process. ... In space, of course, you can't have any fires because there isn't any oxidizer (i.e. oxygen) to sustain the combustion process

Answer 2

no it can not happen at all