NOBODY knows how the universe was formed, how life came to this planet or where it came from. Science attempts to explain, however what it comes up with are admittedly called theories BECAUSE WE DO NOT KNOW. Only religious folks claim they have the answer, even though all they have are subjective claims that can't even hold a candle to any scientific theories which are at least backed up by direct observation and peer reviewed. Religion has nothing but archaic religious documents full of stories written by men that did not know where the sun went at night about people that they never met and had been long dead.