Interior of the Earth is divided into 4 main layers Crust, Mantle, Outer core &
Inner core. Earthquake is sudden energy release from the Interior of the Earth

Layers of atmosphere of is composed of gases, water vapor & dust particles. Layers of Atmosphere of the Earth is divided into 5 different layers.

Here is the List of Major Straits of the World. A strait is a narrow waterway that connects two larger bodies of water and lies between two land masses.

Our Solar System is the gravitationally bound system of the Sun & objects that orbit it. Formation of our Solar system started about 5.6 billion years ago.

Most popular theory regarding the origin of the universe is the Big Bang Theory. Starts are formed by accumulating hydrogen form Nebula cloud.