What do you get when you put one of the smartest people in the world – astrophysicist Neil DeGrasse Tyson – in the same room with MSNBC talker Chris Hayes? Answer: You get a lot of science interview questions, not all of which will be gems. But to their credit, they did manage to cover the one burning issue which awaits resolution – where are the aliens, and why haven’t they contacted us? Tyson may not know for sure, but he has a theory. Astrophysicist and Cosmos host Neil DeGrasse Tyson told MSNBC host Chris Hayes that while it’s audacious...