What is Gravity Made of?

One of the most incredible physics discoveries of the century was just made (and then disputed). If correct, it reveals new secrets of gravity and the birth of our universe, called “inflation.” This video takes us back to the beginning of time and explains how quantum particles in the infant universe created a cosmic fingerprint that scientists can see today. This new evidence could tell not only why the universe exploded outward during its birth, but also that gravity is made of quantum particles, called gravitons.

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