Have u read Erich Von Daniken's Chariot of the Gods, published
1969? I have, and it has a theory, much like the storyline of
'Aliens Vs Predator', where the aliens came to our planet to breed
with us (in the Bible, these alien(s) is God(s) and the Giants
often mentioned are the human/alien hybrid species, the result of
cross-species reproduction between the aliens and humans), and
because of their advanced technology, our simple minds at that time
thought that these aliens must be Gods, for they used technology
comparable to magic...
There is another theory called Panspermia which says that life on
Earth came from elsewhere in the universe.
It is now known that for most of the history of Earth, the most
sophisticated form of life was simple algae pond scum. From
about four and a half billion years ago up until about six hundred
million years before the Present, a relatively narrow range of
algae were the most advanced organisms living anywhere on the
planet.
Then, at the boundary between the last two great geological epochs
-- known as the great Pre-Cambrian/Cambrian transition -- there
was a veritable explosion of much more complex life
which
formed the pattern for the development of all the future
kingdoms, phyla, genera, families and species that we now
recognize on Earth.
This so-called Cambrian Explosion is without doubt the single
biggest mystery of life on Earth
Save, of course, for the even more mysterious appearance of Life
itself.
Why, for literally billions of years, was Earth home to only an
extremely narrow range of microscopic cyanobacteria, some organized
in great algal mats (below) called stromatolites
? And then, in
the space of less than 5 million years (as judged by the latest
evidence) BANG!! every form of life currently appearing on
Earth suddenly emerged
?
Earth at the dawn of history:
