Skip to main content

Space Ed

Register or Sign in

Sunlight is way older than you think - Sten Odenwald

732,100 Views

0 Questions Answered

Our solar system The physics of the universe

Let’s Begin…

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.

WatchThink Dig Deeper
Previous
Photons flow out of the core, interact with matter, lose energy, and become longer wavelength forms of light changing from gamma rays in the core to other forms of light. Which type of waves can they become after that?
Next

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

More from Our solar system

Certificate of Achievement

Earn a certificate

Get a certificate for completing any 30 lessons. Here's how:

  1. Make sure you are signed into your Space Ed account. Register if you don't already have an account.
  2. To complete a lesson, WATCH the video and finish all the questions in the THINK section.
  3. Complete any 30 lessons - you'll get a green checkmark on each lesson you complete.

That's it! You will get your certificate in an email.