The 8 facts of our planets history cast in stone
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4.5 billion years ago our earth was formed. then it encountered a collision with a planet named theia which formed the moon. after the formation it got faraway from earth at distance of 300000 km. in the next 1 billion years comets hit the earth which brought water because comets usually contain lot of ice. 1 billion years ago was the last volcanic activity on moon and talking about earth the cyanobacteria occupied some water bodies. the moon was at a distance of 200000 km at that time exactly. than 800 to 900 million years ago continent grew big in size. 240 million years ago first dinosaurs appeared. it was the trissiac period. 175 million years ago the Pangaea broke apart thus forming continents. finally 66 million years ago a 15 km asteroid hit the earth killing 76% of all life including dinosaurs. 60 million years ago the India which was just a floating island in the ocean and during that time it collided with Asia which created Himalayas today
Mt Everest in Himalayas is the tallest mountain on earth. after the extinction of dinosaurs first mammals appeared