Adventures in Space and Time episode 3 - What Is Gravity?

Brian Cox's Adventures in Space and Time episode 3: Brian takes a fresh look at the concept of gravity, revealing it to be far more than just the force that makes things fall to the ground. Recent scientific breakthroughs are challenging physicists’ ideas of the very nature of reality.
Last Science posts on HDclump.com:
https://hdclump.com/the-story-of-science-episode-3-how-did-we-get-here/
https://hdclump.com/the-story-of-science-episode-2-what-is-the-world-made-of/
https://hdclump.com/the-story-of-science-episode-1-what-is-out-there/
https://hdclump.com/the-story-of-electricity-episode-3-revelations-and-revolutions/
https://hdclump.com/the-story-of-electricity-episode-2-the-age-of-invention/
https://hdclump.com/the-story-of-electricity-episode-1-spark/
https://hdclump.com/secrets-of-the-super-elements/
https://hdclump.com/the-artificial-intelligence-race/