© 2025 Connecticut Public

FCC Public Inspection Files:
WEDH · WEDN · WEDW · WEDY
WEDW-FM · WNPR · WPKT · WRLI-FM
Public Files Contact · ATSC 3.0 FAQ
Play Live Radio
Next Up:
0:00
0:00
0:00 0:00
Available On Air Stations

Why Some of the Rainbow is Missing

Season 11 Episode 14 | 11m 18s

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.

Aired: 08/09/23
Extras
Grantchester Season 10 premieres Sunday, June 15, 9/8c on MASTERPIECE on PBS.
On the plains of South Africa, an army of dung beetles recycle the dung of large mammals.
Ummat Somjee goes to Thailand to observe the cultural tradition of fighting beetles.
An intimate portrayal of three families confronting the unique challenges of Alzheimer’s.
Gavin Svenson heads to the Brazilian rainforest to sample the diversity of mantises.
Dragonfly expert Jessica Ware heads to Guyuna to sample dragonfly diversity.
Nancy’s wedding plans take a surprising turn. Sister Catherine takes her First Vows.
David Henry Hwang (Daniel Dae Kim) brings Marcus G. (Ryan Eggold) to a talkback.
David Henry Hwang (Daniel Dae Kim) shares a phone call with his father.
Forensic science is put to the test after the first-ever staged multi-vehicle pileup.
Latest Episodes
All
  • All
  • Be Smart Season 13
  • Be Smart Season 12
  • Be Smart Season 11
  • Be Smart Season 10
  • Be Smart Season 9
  • Be Smart Season 8
  • Be Smart Season 7
  • Be Smart Season 6
  • Be Smart Season 5
  • Be Smart Season 4
  • Be Smart Season 3
  • Be Smart Season 2
  • Be Smart Season 1
The oldest rocks on Earth are more than just ancient—they’re time machines!
This is one of the weirdest mysteries of human evolution: Why do we have grandmas?
Insects and birds have an awesome superpower that repels water and keeps them airborne in the rain.
Why do some people taste music or hear colors? Let’s talk about synesthesia.
How a chemical in lizard spit inspired one of the most important medical advancements.
These diamond makers create one of the most amazing materials on Earth — from dead people.
Learn nature’s ultimate game of hide-and-seek, and the way to win this game is all in the brain.
Nature has had to come up with some crazy ways to survive winter. None are weirder than hibernation.
Political scientist Don Green joins Joe to figure out the complex psychological and social factors t
Why do certain sounds make some of us so upset?!