There are black holes as little as 0.1 millimeter
When thinking about black holes, we usually envision something that appears to be a bottomless abyss. Something so large it could possibly consume objects much more significant than Earth or the solar system. But did you know there are also super small black holes? Scientists have actually researched them.
The smallest known black hole has a core that is 0.1 millimeters wide, but if you account for the inner and outer horizons, its whole mass is much larger. The smallest recorded black hole weighs 22 micrograms, but it can actually get bigger as it orbits around. A microgram is one-millionth of a gram, so just imagine how tiny that is!