All science is, is an observation of the facts using human senses to assitain a result.
So if Wes sees a ghost he is using a scientific mode of observation when he claims he has seen a ghost. Science is literally completely neutral towards anything that includes God, ghosts or Gary Glitter. So don't try and own science or use it in the manner of a creed as its counter productive to what science actually means. Those who try to pit science vs religion are either naive or have an agenda to put on the cards, the two are very much compatible.