Roughly how long does it take for the energy packet created by fusion in the Sun's core to escape the dense interior layers and reach the surface?
Answer
Between 10,000 and 170,000 years
While light takes about 8 minutes to travel from the surface to Earth, the photon travel time from the core where fusion occurs out through the dense interior layers is estimated to be between 10,000 and 170,000 years.
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