What was the first year on Earth called? #earth #name #sciencefacts
8What was the first year on Earth called? This is a fascinating question that has no definitive answer. The Earth, as a planet, formed sometime during the **Hadean Eon**, which lasted from about 4.6 to 4 billion years ago. However, the Earth was not a stable or hospitable place for life during this time. It was constantly bombarded by asteroids and comets, and its surface was mostly molten rock and magma. The first year of the world, as we know it today, was probably between **4 and 4.5 billion years ago**, when the Earth's crust started to solidify and the oceans began to form . This is also around the time when the earliest known life forms appeared on Earth, such as microbial mats and stromatolites . Therefore, we could say that the first year on Earth was the first year of life on Earth, which marks the beginning of the **Eoarchean Era**, a subdivision of the Archean Eon.