The danger of encountering a black hole is obvious: it is deadly. But scientists say that there may be small, "primordial" black holes hidden in the solar system that are not visible. These small but extremely deadly objects can be smaller than a paperweight or as significant as the Sun, with masses ranging from a few grams to the Sun's mass. Robert Scherrer, a professor at Vanderbilt University, explains that even a small black hole can cause severe damage or death.
