Our universe could exist in a higher dimensional space, and these events could be cases where higher dimensional objects are intersecting with our 3 spatial dim

Our universe could exist in a higher dimensional space, and these events could be cases where higher dimensional objects are intersecting with our 3 spatial dimensions. This would explain the strange changes of shape, high speed, hovering without apparent means of support, and disappearances so often reported for these objects. It does require that the higher dimensional space we occupy be relatively empty in our vicinity, otherwise we would expect far more of these events. Perhaps we're in a 5-D alien lab, being studied in a tank. But it's far more likely to be a consequence of more mundane human perceptual limitations - tricks of the light, etc.