Why Does The Universe Exist? Fan Grab Bag With Neil deGrasse Tyson
47:31
The Shape of the Universe with Neil deGrasse Tyson & Delilah Gates | Cosmic Queries
50:24
Are Aliens Smarter Than Us? With Neil deGrasse Tyson and David Grinspoon
17:22
Jim Holt: ¿Por qué existe el universo?
51:51
The Intersection of Science and Religion with Neil deGrasse Tyson
45:12
The Edge of Our Understanding with Brian Greene & Neil deGrasse Tyson
1:33:52
A Conversation with Astrophysicist J. Richard Gott III
7:38
Dark Energy Is Not Real, New Data Analysis Finds
52:15