Yep, as I mentioned in Post #8, brain theory attempts to go around this question rather than address it. I believe it is their attempt at avoiding Aquinas's prime mover argument for the existence of God. And as I stated, it would require more evidence to convinv=ce me (although I do not think they care about convincing someone called Siloam).Also: what was "there" to "bang"?
Not really, the Cambrian age was so long ago that it is remarkable that any remains can be found. What appears to be a quick population explosion is actually quite long in evolutionary terms, and advances in complexity can be lost in the compression.It turns out the Cambrian explosion of fossils is actually a huge weakness for evolutionary models, because it shows a massive number of species appearing at once and without transitional forms.
Further, as microscopic examination of earlier deposit show, there was a wide variety of micro-organisms to start from.
The Big Bang was based on the work of Edwin Hubble measuring the distances and speeds of distant galaxies. Each galaxy was (is) receding away from the our Galaxy (Milky Way) in direct proportion to distance. A galaxy twice as far away was (is) going away from us twice as fast. Applying a little trigonometry to the distances, angles and speeds showed that if one measured from any of those far away galaxies, other galaxies would still be receding proportional to their distances from the new point of measure.scientist version goes a bit like this
Once upon a time, billions of years ago, there was a BIG BANG!
Then, all these bits and pieces of universe were somehow mixed up together like a big fizzy drink and went off and somehow collided with each other to form a big rock, and then somehow the rock was so huge it was earth but also covered with water, so it was like a big soup, and algae crawled out into plants. Somehow some of the water evaporated because it was so hot, and then animals were in the sea but they crawled out on to land, and some of them also climbed trees to become monkeys, then apes, and the apes changed into humans! But all this took a very very long time, you know, like billions of years. (we know it took that long, cos we made scientific calculations using our very scientific calculators).
And that, my children is how we came to exist! One day you may change into something else too! We are all evolving!
If one projects those galactic trajectories backward, it was found that they all come together at one place and time in the past. THAT is the where and when of the Big Bang. Further evidence has been found in the form of cosmic radiation that is the lasting result of the Big Bang. My High School science text was written before this controversy was settled and presented both the Big Bang and the steady state theory which postulated that new stars were created from the remains of dead stars, preserving the number of stars on the whole. With the evidence of cosmic radiation, along with many other avenues of study, the Big Bang has emerged as a best explanation of observed phenomena.