Gravity Well (itch) (False God)

Go back to time when Earth was just a ball of dirt with a constant rain of dirt and rocks. Your job is to help navigate a special rock through this chaos so that IT CAN LATER FORM THE FIRST CELL. The stakes are as high as they can be. Make sure that the rock is not squashed too deep in the planet to better the chances of it's survival when it becomes the first cell.