Youve probably heard that black holes stick around for a long timebut even they are not eternal. Over unimaginable spans of time, they slowly evaporate into space through a process called Hawking radiation. And heres the kicker: this doesnt just apply to black holes. Anything with massstars, moons, even youcan, in theory, evaporate in this way. Black holes are a special case since they dont have a surface and can actually swallow some of their own radiation, making their demise painfully slow. The biggest ones might take up to 10^100 years to disappear. But smaller objects? Something like the Moonor a human beingcould fade into nothingness in "just" 10^90 years.