how was the earth formed

Question: how was the earth formed
- Keywords:
  earth
Asked by aakb266 to Patricia, Kamal, George, Charles, Beatrice on 26 Jan 2017.
- George Githinji answered on 26 Jan 2017:
  
  The earth is thought to have been formed some 4.5 billion years ago. Basically a remnant from the big bang. A rock that cooled down and got caught by the sun’s gravitational pull. It may have been bombarded by other rocks including water bearing comets. All these events shaped the earth into what it is today.

Question: how was the earth formed