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.
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