Neil deGrasse Tyson wants us to 'demand' an alien (and say this when you meet one)

Astrophysicist and science communicator Neil deGrasse Tyson spills on his obsession with aliens and the best and worst ...

Neil deGrasse Tyson takes on aliens and how we should greet them in ‘Take Me to Your ...

Neil deGrasse Tyson has turned his lifelong fascination with aliens into a new book, “Take Me to Your Leader: Perspectives on Your First Alien Encounter.” ...