Visit the 'dark side' of the universe. Black holes cannot be seen because gravity is so strong that not even light can escape. Dark matter cannot be seen because its particles hardly interact with ordinary matter. What is the meaning of the dark side?
Click here to watch more interviews on black holes and dark matter [ Ссылка ]
Click here to watch more interviews with Juan Maldacena [ Ссылка ]
Click here to buy episodes or complete seasons of Closer To Truth [ Ссылка ]
For all of our video interviews please visit us at www.closertotruth.com
![](https://i.ytimg.com/vi/Vb3Tu5bzzQg/maxresdefault.jpg)