No how will it run in space then
its fuel will have oxygen in it
it doesnt need outside oxygen
No, it does not require.

.A rocket engine requires no outside oxygen to operate.They have both oxidizer and fuel.Rocket engines produce thrust by the expulsion of exhaust which has been accelerated to a high-speed. The exhaust is usually a fluid and nearly always a gas which is created by high pressure (10-200 bar) combustion of solid or liquid propellants, consisting of fuel and oxidiser components, within a combustion chamber.So it's totally wrong that rocket engines need air 2 burn
I answered the same thing in a short and sweet way thats all.
what is its composition then ?