Yulian Semyonov
(Predsedatel nauchnoy konferentsii),
Donatas Banionis
(Kris Kelvin, psikholog),
Olga Barnet
(Mat Krisa Kelvina),
Natalya Bondarchuk
(Khari),
Vladislav Dvorzhetskiy
(Anri Berton, pilot),
Nikolay Grinko
(Nik Kelvin, otets Krisa Kelvina),
Jüri Järvet
(Doktor Snaut, kibernetik),
Vitalik Kerdimun
(Syn Anri Bertona),
Olga Kizilova
(Gostya doktora Gribaryana),
Tatyana Malykh
(Plemyannitsa Krisa Kelvina),
Aleksandr Misharin
(Shanakhan, predsedatel komissii Anri Bertona),
Bagrat Oganesyan
(Professor Tarkhe),
Tamara Ogorodnikova
(Anna, tetka Krisa Kelvina),
Sos Sargsyan
(Doktor Gribaryan, fiziolog),
Anatoliy Solonitsyn
(Doktor Sartorius, astrobiolog),
Vitaliy Statsinskiy
(Chlen uchenogo soveta),
Georgiy Teykh
(Professor Messendzher)