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  In the movie when the crew descend to Mann's planet the ranger scrap the edge of an ice clouds. These clouds are largely frozen "Dry ice"(solid form of carbon-di-oxide) the reason why Mann's planet is too cold is, it orbiting the gargantua(black hole) at an over elongated path, the planet swings close(inward journey) around the gargantua and flies out to a large distance(outward journey) and come close around and flies out again, In the movie when the crew desecend to land Endurance is at extreme end of the orbit (outward journey) and after docking scene endurance comes closer to the gargantua; it shows that the Mann's planet mostly away from the accretion disk of gargantua;                                                            oribtary of Mann's planet around gargantua  Mann's planet is cold and ...