The problem of sterilizing a life-support system in biosatellite experiments over one year

Special efforts are necessary to sterilize the life-support system for experimental animals in biosatellite experiments over one year. The energy requirements needed are relatively high and the energy which is available in biosatellites at the present time is a limiting factor, particularly in long-term experiments. It is shown that these difficulties are overcome by the selection of an appropriate experimental animal. Thus, it was possible to prepare a long-term satellite experiment.