Thursday, 26 October 2017

Planet Earth (part 2)

Planet earth is the home to every living thing we know. Earth has been our only home for centuries but how old is it really. How did it come into existence and what is it made of?


4.6 billion years ago earth was created from the remnants of dead stars that collided in a giant dirty gas cloud. The cloud became denser in its centre and formed an accretion disk.

Small particles began to start clumping together and got bigger and bigger and are now what we call planets today.


This process took 10 to 20 million years and is still not understood well.


Around that time when the solar system was just formed and was a bit chaotic, an object around as big as mars collided with our home, planet earth if the object had been any more bigger it might have destroyed planet earth. Materials from earth smashed out into orbit which is what formed the moon.



At this time earth was hot and burning with lava and a toxic atmosphere. Earth was constantly being hit by asteroids.

But something was about to change, earth began to cool down a lot water in the earth began to rise up to the surface and rained down on earth only to evaporate and become clouds again….

To be continued  

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