What's the Universe Made Of? Preview
The universe is hiding something. In fact, it is hiding a lot. Everything we experience on Earth, the stars and galaxies we see in the cosmos—all the “normal” matter and energy that we understand—make up only 5% of the known universe. Find out how scientists are discovering new secrets about the history of the universe, and why they’re predicting a shocking future.
Previews + Extras
How Scientists Discovered Dark Matter
S45 E106 - 2m 37s
What kind of clues led to the discovery of Dark Matter and its place in the universe?
How the Universe Will End
S45 E106 - 1m 29s
Dark energy is spreading the universe apart—what’s it mean for astronomy in the future?
Physics Is a Never-Ending Puzzle
S45 E106 - 1m 8s
Physics rarely yields finite answers, but that doesn’t deter scientists.
Profile: Priya Natarajan
S45 E106 - 5m 38s
Theoretical Astrophysicist Priya Natarajan has loved atlases and maps since she was a little girl.
Similar Shows
A World Without NASA
Science and Nature
Raw to Ready
Science and Nature
Cool Spaces
Science and Nature
Rivers of Life
Science and Nature
Life from Above
Science and Nature
Headwaters Down
Science and Nature
Hungry Planet
Science and Nature
Mysteries of Mental Illness
Science and Nature
Fascinating Fails
Science and Nature
Portrait of a Landscape: Seasons
Science and Nature
PBS PASSPORT
Stream tens of thousands of hours of your PBS and local favorites with WETA+ and PBS Passport whenever and wherever you want. Catch up on a single episode or binge-watch full seasons before they air on TV.