You must have studied the solar system while you were in your 4th grade, but we bet the following facts …
![facts about the planets](https://delightfulfacts.com/wp-content/uploads/2022/06/facts-about-the-planets-265x186.jpg)
Interesting facts around us!
You must have studied the solar system while you were in your 4th grade, but we bet the following facts …
Our planet Earth is made up of 4 layers: crust, mantle, outer core and inner core. The crust is the …