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Sunlight is way older than you think - Sten Odenwald

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Our solar system The physics of the universe

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It takes light a zippy 8 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.

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When a computer model that takes into consideration the changing solar interior is used to calculate a photon's random walk, what is the re-calculated length of time a photon stays in the sun?
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About Space Ed

Space Ed helps you untangle the mysteries of space with the universe’s best videos on everything from Einstein's theory of relativity to what it would take to live on Mars. Brush up on the science, philosophy and mystery of space, because the fabric of the universe is the same fabric that connects us all.

Meet The Creators

  • Director Eduardo Sandoval
  • Narrator Addison Anderson
  • Educator Sten Odenwald
  • Sound Designer Christopher Bullé-Goyri

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