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The historic discovery of gravitational waves on September 14, 2015 is a game changer in physics, but most people have no idea what it really means.

So Stephen Colbert invited theoretical physicist Brian Greene to join him on The Late Show to explain it in layman’s terms.

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Over the course of just 8 minutes, Greene gives a crash course lesson on gravitational waves and Einstein’s 100-year-old theory of relativity – all in a way everyone can understand.

Theoretical physicist Brian Greene makes an appearance on The Late Show with Stephen Colbert, where the two banter about the historic discovery of gravitational waves on September 14, 2015. Turns out, Greene only needs eight minutes to give a crash course lesson on gravitational waves and Albert Einstein’s 100-year-old theory, all in layman’s terms.

Greene explains that gravitational waves are essentially ripples in the fabric of space-time. Using laser based models he shows how scientists were able to independently find evidence of gravitational waves from two merging black holes more than a billion light-years away.

His effort to replicate whatt two black holes colliding “sounds” like, however, fell flat. Colbert’s response: “Is God Bugs Bunny?”