Question

How was earth formed.......?

Answer 1

The earth is thought to have been formed about 4.6 billion years ago by collisions in the giant disc-shaped cloud of material that also formed the sun . Gravity slowly gathered this gas and dust together into clumps that became asteroids and small early planets called planetesimals  
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Answer 2

The earth is thought to have been formed about 4.6 billion years ago by collisions in the giant disc-shaped cloud of material that also formed the sun . Gravity slowly gathered this gas and dust together into clumps that became asteroids and small early planets called planetesimals