Is existence of life on Earth just a coincidence. Partly yes. It is a coincidence in a similar way to the coincidence that there is just exactly the right amount of news every day to fill a local newspaper. read more
Coincidence is the result of understanding that there's a certain connection between two unconnected events. So, if You notice a system, You say, it's coincidence; if You notice no system, You don't mark it out. read more
). Van-Allen radiation shield is unique to Earth Another fortuitous result of the collision of the Mars-sized planet with the Earth is the presence of the Earth's large and heavy metallic core. read more