The team spied five to six big flares a day as well as smaller flashes of light in between. “Flares are expected to happen in essentially all supermassive black holes, but our black hole is ...

spotted many pops of light near Sag A* across 48 hours of observation. These flashes, which varied in strength, appeared to flare from the inner edge of the black hole's accretion disk.

Eye floaters caused by this kind of minor hemorrhaging create little black ... flashes caused by changes in the vitreous gel are most visible when you are looking at a plain, light-colored background.