It is believed that the Earth was formed around 4.6 billion years ago through the process of planetary accretion. From initially being in a molten state due to extreme volcanic activity to the point where it is today, a lot of events have occurred in Earth’s geological time scale. By collisions within a giant disc-shaped cloud of matter aided by gravity, asteroids and planetesimals were formed. These, in turn, collided to form the solar system including our Earth. There have been many defining moments in the making of the planet we call home. For the sake of brevity, we pick out the top 10 such moments in Earth formation.