Origin of Life  Early Earth Environment  So if Pasteur is
correct and life only comes from existing life, where and how
did life begin? Many theories attempt to answer this question,
including the popular creationist theory, which states that God
created man in his own image, which may in fact be correct.
However, this section illustrates the scientific evidence that
leads to an evolutionary pathway. In the final analysis, both
theories may turn out to be the same.  Based on many
assumptions, the conditions on early Earth, some three to four
billion years ago, are thought to be much different from what
they are today. To begin with, the astronomical phenomenon
called “the big bang” is defined by a theory proposing that the
earth was one of the larger particles that coalesced after the
initial universe explosion, or big bang, that spewed all the
particles in the universe away from a central point and destined
them to slowly revolve around that point.   Iron-containing
rocks reportedly recovered from period str