Hadean

Hadean is a word that scientists use to talk about a really, really, really long time ago when the Earth was just starting to form. Think about it like when you are making a pizza - before you even start putting the sauce and toppings on, you have to make the dough first. Hadean is like that dough-making part of the pizza, before anything else is added.

During the Hadean time, the Earth was really hot and there were a lot of volcanoes erupting all the time. It was so hot that most of the rocks that were formed melted and turned into magma, which is like really hot, melted rock. This magma would bubble to the surface and cool down to make new rocks. Over time, these rocks would build up and make the Earth's crust.

There were also a lot of things hitting the Earth during the Hadean time. Think about it like when you are playing with blocks and you accidentally knock them over, or when you bump into a table and your toys fall off. That's kind of like what was happening to the Earth - big rocks were crashing into it and causing a lot of chaos.

Even though it might sound scary, the Hadean time was really important because it created the foundation for everything that came later. Without this time period, we wouldn't have the Earth we know and love today.