@FadeToBlackBolt: You're missing the point. 1st of all, when physicist talk about "radiation types" it's usually alpha, beta, x-ray, or gamma. When it comes to stella classification astronomers use O, B, A, F, G, K, and M. Color is only determined by surface temperature, because stars approximate black body radiators. Red supergiants are "red" because their energy is being released over a larger surface area, but they release a great deal more energy than our own sun...which is white when viewed from space. Antares has a visual luminosity 10,000 times greater than our sun, and a bolometric luminosity about 65,000 times higher since a large part of it's energy is in the infared. A better thing to say would be our sun emits more of it's emergy in the UV than Rao did. But "red solar radiation" and "yellow solar radiation"? It's writing from ignorance.
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