Neil deGrasse Tyson Explains Why We Have Leap Days
15:11
Why Do Clocks Run Clockwise? | Neil deGrasse Tyson Explains...
11:00
Why Planets Are Round
14:00
Neil deGrasse Tyson's Guide to Skywatching
15:19
Two Astrophysicists Debate Free Will
13:12
Neil deGrasse Tyson Explains Why The Sky Is Blue
14:43
Neil deGrasse Tyson Explains The International Date Line
16:41
Neil deGrasse Tyson's Life Advice Will Leave You SPEECHLESS - One of the Most Eye Opening Interviews
17:56