Researching a cosmic mystery like dark matter has its downsides. On the one hand, it’s exciting to be on the road to what might be a profound scientific discovery. On the other hand, it’s hard to convince people it’s worth studying something that’s invisible, untouchable, and apparently made of something entirely unknown. While the vast majority of physicists find the evidence for dark matter’s existence convincing, some continue to examine alternatives, and the views in the
