personal reflections

Reminisces of Carl Sagan

Dr. Tyson's eulogy for Carl Sagan, delivered at the Cathedral of St. John the Divine, New York City, February 27, 1997

Dedication of the Center for Space Education

Keynote address for the dedication of the Center for Space Education at Kennedy Space Center.

Ph.D. Convocation Address

Dr. Tyson's Ph.D. convocation address delivered at Columbia University.

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