Name	Known for
Zachary Quinto Self - Narrator (voice) Self - Narrator (voice) See fewer	Star Trek (2009)
Fran Bagenal Self - Professor of Astrophysical and Planetary Sciences University of Colorado Self - Professor of Astrophysical and Planetary Sciences University of Colorado See fewer	Nova (1974)
Leigh Fletcher Self - University of Leicester Self - University of Leicester See fewer	Nova (1974)
David Grinspoon Self - Planetary Science Institute Self - Planetary Science Institute See fewer	Nova Wonders (2018)
Noah Hammond Self - University of Toronto Self - University of Toronto See fewer	Nova (1974)
William McKinnon Self - Co-Investigator, New Horizons Self - Co-Investigator, New Horizons See fewer	Nova (1974)
Cathy Olkin Self - Deputy Project Scientist, New Horizons Self - Deputy Project Scientist, New Horizons See fewer	Nova (1974)
Derrick Pitts Self - Chief Astronomer The Franklin Institute (as Derrick H. Pitts) Self - Chief Astronomer The Franklin Institute (as Derrick H. Pitts) See fewer	A Practical Guide to the Cosmos (2022)
Edgard Rivera-Valentin Self - Lunar and Planetary Institute Self - Lunar and Planetary Institute See fewer	Nova (1974)
John Spencer Self - Deputy Project Scientist, New Horizons Self - Deputy Project Scientist, New Horizons See fewer	White Demise (2020)
Alan Stern Self - Principal Investigator, New Horizons Self - Principal Investigator, New Horizons See fewer	Persephone (IV)
Hal Weaver Self - Project Scientist, New Horizons Self - Project Scientist, New Horizons See fewer	Nova (1974)