if something is not in the data, it's not in the data. there might be a divine teapot on the other side of the sun, circling it in such a way as to always be invisible from our point of view, but as long as it doesn't influence the data we have, what is there to talk about? – it would be quite idiotic (and precisely akin to the paintings of monsters in uncharted seas in old maps) to assume that anything we CAN'T prove or disprove at any given time to be true.