What is the Shortest eon?

The shortest eon in Earth's geological time scale is the Hadean Eon, which lasted from about 4.6 billion to 4 billion years ago. This eon marks the time from the formation of the Earth until the solidification of the planet's crust. The Hadean is characterized by extreme volcanic activity, the formation of the Moon, and the development of the early atmosphere and oceans. Its duration is roughly 600 million years, making it the briefest eon in Earth's history.