Most fascinating to me is when someone discovers or imagines that some natural phenomenon that you thought was a discovery, turns out to be a really subtle effe

Most fascinating to me is when someone discovers or imagines that some natural phenomenon that you thought was a discovery, turns out to be a really subtle effect of the noise in the instrument? This happens a lot in radio astronomy, too - you can get interference from all sorts of electronic devices. Nowadays there are more and more passing satellites, as well. Or even something mundane like a microwave. https://www.theguardian.com/science/2015/may/05/microwave-oven-caused-mystery-signal-plaguing-radio-telescope-for-17-years https://www.theguardian.com/science/2015/may/05/microwave-ov...