À la Recherche de Planète 9
- Anno: 2022
- Nazione: France
- Genere: Documentario, televisione film
- Studio: ARTE, Look at Sciences
- Parola chiave: telescope, astronomer, planet, pluto, astronomy, solar system, distant planet, scientific research, exo planet, hypothetical, science documentary, scientific theory
- Direttore: Florence Tran
- Cast: Chadwick Trujillo, Michael E. Brown, Konstantin Batygin, Scott S. Sheppard, Kat Volk, Renu Malhotra