John Spencer
Filmography
| 2020 | Secrets of the Solar System · as Self - New Horizons Deputy Project Scientist |
| 2019 | Pluto and Beyond · as Himself |
| 1974 | NOVA · as Self - Planetary Scientist, New Horizons Mission |
| 2020 | Secrets of the Solar System · as Self - New Horizons Deputy Project Scientist |
| 2019 | Pluto and Beyond · as Himself |
| 1974 | NOVA · as Self - Planetary Scientist, New Horizons Mission |