So, what's behind the behavior around these black holes? The team doesn't have any firm answers, but it notes that what we see might be the result of less-than-straightforward phenomena. Those X-ray sources might be fed through discs inflated by intense pressures from the material going through it, making them look brighter than they really are. While physicists aren't rewriting textbooks just yet, it's evident that humanity has some big riddles to solve before it can truly understand space.