Stars are massive, luminous spheres of plasma held together by their own gravity. They generate energy through nuclear fusion in their cores, which releases light and heat.

Here are some other possibilities, depending on the specifics of the burning gas:

* Nebula: A cloud of gas and dust in space. Some nebulas are heated by nearby stars and can appear to glow.

* Supernova remnant: The expanding cloud of debris from a star that has exploded. These can be incredibly hot and luminous.

* Planetary nebula: A shell of gas and dust ejected from a dying star. These can also be quite bright and colorful.

Could you tell me more about the burning gas in space? What color is it? What shape is it? Where in space is it located? The more details you can provide, the better I can help you identify it!