I'll try to make something like this, I'm planning on making it a chain of explosions creating fiery particles at a specific radius from the center point, having debris points appear on the "edge" of the radius spewing out fire particles to make solar flares, then a giant transparent yellow ring particle just a tad wider than the radius will appear and disappear simultaneously at set intervals creating a corona.
The main explosion will chain itself as a sub-explosion and simply keep repeating itself until the game is over.
Also the Flare Debris Emitter will spew out particles at a set speed, and those particles will be drawn back into the sun by a negative acceleration

Edit: also the use of explosions will enable the creation of Light Emission, I could give the light radius a very wide range as to "bask" everything in it.