
None of us can know it all, the planet is too big and the space is vast and it is full of collisions, gas and dust electrotatically flock together, and no human can watch or follow it all. For the moment (the last millions of years at least) gravity takes over coalescing grains into rocks, rocks into boulders then asteroids colliding again and again, striking planets and each other. Stars collide creating monsters of light and energy even galaxies collide over millions of years, space is a rough place to be.
The Spark channel from Youtube is show you some of the current conclusion about the planet. How much do you know about our planet Earth without watching the video? Make a list and check it out while watching.