How many years does it take for heat generated in the Sun's core to reach its outer layer, the photosphere?

About 20 000 years believe it or not. The material near the Sun's core is so dense (98 grams per cubic centimetre) that the photons that carry the fusion energy outwards keep bumping into nuclei and work their way outwards in a long slow random walk. They start off as high energy gamma rays, but with each collision they lose a little energy. By the time they emerge from the photosphere, they're UV, visible or heat radiation.How many years does it take for heat generated in the Sun's core to reach its outer layer, the photosphere?
It takes approximatley 1,000,000 years the reason being that the core of the sun is so dense and energetic that the subatomic particles that make up light are obstructed on their way out of the coreHow many years does it take for heat generated in the Sun's core to reach its outer layer, the photosphere?
Nobody knows.





I really wonder why everyone is asking this question nowadays. Its so idiotic everyone still ask this question.





';No one knows! -Probably several million years.';


';Probably more than a million years.';


';Current estimates range from 17,000 years to 50 million years.';


';The energy generated in the Sun's core takes about 30,000 years to reach the photosphere's surface, where it is mostly emitted as light and infrared (heat) radiation.';
i've heard 20,000 years, haven't checked it out myself though