This work concerns a new concept of vertical farms that can be installed in orbital stations and future lunar settlements in order to produce fresh food for astronauts. The main novelty of this kind of greenhouse lies in the possibility of continuously adapting the volume assigned to each crop to the level of plant growth by automatically moving the shelves, thus allowing to grow a greater number of crops per unit of volume than existing solutions based on vertical farms with fixed shelves. The main results on the production yield estimation of this structure, compared to conventional vertical farms, are presented together with the prospect of future research work.