 | | | | Neil deGrasse Tyson discusses his lifelong passion for astrophysics and shares a clip from his science series, "Cosmos." | | | | | | | | |  | | | Neil deGrasse Tyson Pt. 2 | | Neil deGrasse Tyson gives his take on the most significant scientific discoveries of the past 35 years, from dark energy to the possibility of multiple universes. | | | | | | | | |
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