NOVA Wonders What's the Universe Made Of?

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.

What kind of clues led to the discovery of Dark Matter and its place in the universe?

Dark energy is spreading the universe apart—what’s it mean for astronomy in the future?

Physics rarely yields finite answers, but that doesn’t deter scientists.

Theoretical Astrophysicist Priya Natarajan has loved atlases and maps since she was a little girl.