Why Some of the Rainbow is Missing

Over 200 years ago, scientists were looking at sunlight through a prism when they noticed that part of the rainbow was missing. There were dark lines where there should have been colors. Since then, scientists have unlocked the secrets encoded in these lines, using it to uncover mind-boggling facts about the fundamental nature of our universe and about worlds light-years away.

0:00 Fraunhofer's mystery of missing colors
0:54 Playing with fire
2:11 Puzzle pieces and color codes
3:30 Electrons do the strangest things
5:40 How to make a rainbow analyzer
8:00 Using rainbows to understand the universe
9:57 Life beyond Earth
10:57 Final thoughts