colors (frequency/wavelengths) at all?
*A: Any hot, dense object will glow in some range of the electromagnetic spectrum. In other words, hot, dense objects approximate black bodies. In sun’s case, the original source of its light are the gamma rays released by the nuclear reactions in the core. Recall that gamma rays are photons with much more energy than photons which fall in the range that we can see. However, as gamma rays make their trek from the core to the surface of the sun, they get very bonked around by all the dense particles in the sun. A photon from the core can’t travel very far at all before encountering an electron here or a proton there. Interactions with these particles cause the high energy photon to get degraded into more than one, lower-energy photons (the details of this process are too complicated to get into here). So by the time the energy reaches the surface, instead of a few really energetic gamma rays, we have a crapload of moderately-energetic photons, whose distribution peaks in the visual part
