What if a coin-sized black hole appeared on Earth?

Original author：v4 what if?

Original source：https://www.youtube.com/embed/dS2oscDiLfE

This question comes from William , who asks: “What would happen if a black hole the size of a coin suddenly appeared on Earth?” The answer depends entirely on what you mean by “size.” If you mean the mass of a coin, the black hole evaporates instantly in a blinding flash of Hawking radiation. But if you mean a black hole with a diameter the size of a coin… we’re going to need a lot more than a neighborhood. To squeeze enough matter into a space about 2 centimeters wide, you’d need the mass of the entire Earth. That’s right—a coin‑sized black hole would weigh as much as our planet. And it would not sit quietly on your desk. In this video, we break down the terrifying physics: Why the black hole instantly punches through the crust like cotton candy The gravity doubling in your kitchen (and what spaghettification feels like) How the Earth becomes a glowing disk of molten rock in just 10–15 minutes What happens to the Moon, your mortgage, and your favorite coffee shop Spoiler: by the time the black hole finishes its meal, it’s grown to the size of a tennis ball—and Earth is gone. The Moon, however, continues orbiting an empty spot where your home used to be. #blackhole #whatif #space #physics #science