It takes light a zippy eight minutes to reach Earth from the surface of the Sun. But how long does it take that same light to travel from the Sun's core to its surface? Oddly enough, the answer is many thousands of years. Sten Odenwald explains why by illustrating the random walk problem. [4:37]

Additional Tags

speed of light, sun's interior, ted ed: sunlight is way older than you think, light year, interior

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Classroom Considerations

• Knovation Readability Score: 3 (1 low difficulty, 5 high difficulty)