Neil deGrasse Tyson/ Gregory Mone (CON)
(3)
Neil deGrasse Tyson/ Michael A. Strauss/ J. Richard Gott
(3)
Neil Degrasse Tyson/ Avis Lang (EDT)
(2)
Neil deGrasse Tyson/ Avis Lang
(2)
Neil deGrasse Tyson/ Donald Goldsmith
(2)
Neil deGrasse Tyson/ Gregory Mone (CON)/ Gabrielle de Cuir (CON)/ LeVar Burton (NRT)
(2)
Neil deGrasse Tyson/ Michael A. Strauss/ J. Richard Gott/ Michael Butler Murray (NRT)
(2)
Neil deGrasse Tyson/ Mirron Willis (NRT)
(2)
Carl Sagan/ Neil deGrasse Tyson (FRW)/ Ann Druyan (INT)
(1)
Carl Sagan/ Seth MacFarlane (NRT)/ Ann Druyan (NRT)/ LeVar Burton (NRT)/ Neil deGrasse Tyson (NRT)
(1)
Carl Sagan/ Seth MacFarlane (NRT)/ LeVar Burton (NRT)/ Neil deGrasse Tyson (NRT)
(1)
Colin Davey/ Thomas A. Lesser (CON)/ Neil deGrasse Tyson (FRW)
(1)
Cornelia Dean (EDT)/ Neil deGrasse Tyson (FRW)
(1)
David Devorkin/ Robert W. Smith/ Neil deGrasse Tyson (FRW)/ John M. Grunsfeld (FRW)
(1)
Neil Degrasse Tyson/ Neil deGrasse Tyson
(1)
Neil deGrasse Tyson (EDT)/ Jeffrey Simons (EDT)/ Charles Liu (EDT)
(1)
Neil deGrasse Tyson (EDT)/ Steven Soter (EDT)
(1)