NOVA WONDERS WHAT'S THE UNIVERSE MADE OF?

 
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NOVA WONDERS - 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. The other 95% is made up of two mysterious components: “dark matter” and “dark energy.

 
 
 
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