MoonlightSonata said:
Wow... someone actually posted a reason, or at least the closest thing to a reason on this thread. Actually the point sounds like a fearful appeal to ignorance really - "we don't know what caused it, so it must be God!", but anyway, here is something that addresses that point:
"There's no reason to suppose a God exists simply because the Universe does. Yes, the start of the Cosmos is a mystery. So what? Powered flight used to be a mystery - up until the Wright brothers decided Kitty Hawk would be a nice place for an airstrip. This is commonly called the God of the Gaps Syndrome: there is a mystery which is so far unexplained by science. Priests everywhere rejoice, and proclaim that said mystery proves God. It's very strange how God keeps leaping from place to place every six months as scientists make new discoveries."
Saying that the existence of the Universe proves the existence of God is a fallacy (question-begging) --
1. Everything except God has a cause.
2. The universe is not God.
3. Therefore, the universe has a cause.
Or, if you like --
1. Everything had a cause, and every cause is the effect of a previous cause.
2. Something must have started it all.
C. God is the first cause, the unmoved mover, the creator and sustainer of the universe.
"What caused God? What many people suggest that it is reasonable to believe in God because it solves a mystery: that of who, or what, caused the universe to come into being. However, it just replaces one mystery with another."
I agree, however the theory of space-time shows that space and time are one. This was proved by putting an atomic clock in a jet and flying around the world while another was left on the ground. The clocks timing was out compared to the one on the ground when it returned. This shows that time and space (therefore speed) affects the flow of time. Likewise the closer you get to a dense mass the slower time passes. As light flows into a black hole it is slowed incredibly to the point of the Event Horizon where it has been slowed to such an extent that light cannot "escape" for us to view it. What lies withing? A dense nothingness? I singularity? Who knows? Only further scientific advances may give us answers!
As for the Origins of the universe question the fact is that space and time are one. Thus with no space there is no time.
In the beginning (As the Christians would have it)...
The supposed Big Bang "created" the whole universe.
At the time of the big bang when space/time came into existance and for a relatively short period afterwards (millions of years) the universe was radiation dominated. This meant that all the energy in the universe was in the form of radiation. As the universe expanded from this explosion the radiation "condensed" into matter. Beginning with hydrogen (the simplest form of matter.) The hydrogen clouds, being matter, created a slight gravitational force in the vacuum of space condesing the clouds into spiralling giants which, due to friction, ignited and formed the first stars. Due to the hydrogen fusion that takes place within stars more complex form of matter were created and dispersed into the universe. Helium, lithium, berilium, boron, carbon... etc. As the lifecycle of stars repeated itself more complex matter was created and dispersed in the star's dying explosion. Over time these combined to form togther into large masses. When caught in the gravitational pull of the sun they crashed into each other and combined into large planetoids as is exemplified in our solar system.
From this first explosion, and the cooling into matter thereafter, it is coceivable that the universe is expanding as the law of thermodynamics shows that any finite amount of matter in a finite but increasing space will cool. So the fate of our universe seems to either be that the universe will slow in it's expansion, stop, and be drawn back together by it's own gravity until it returns to it's original state and possibly starts over. Or the universe will expand and basically freeze as the universe expands. Possibly both will happen. I guess we'll never really know, nor need to. It will be long after the human race as we know it has ceased to exist that it will occur. It is often best to ignore such things and get on with our lives.
But the fact remains that there was no "before" the big bang. Space and time did not exist before it. If there was no time there was no before. A simple concept, yes? Time may not be linear anyway. There may be multiple universes (dimensions... to simplify: Think "Sliders") and who knows what laws of physics apply there? We live in a 4 dimensional world. But there are more possible dimension than simply depth, width, height and time.
Imagine the univers cooling as it expands and forming inconceivably large fractals with different parts having different properties... a difficult concept I know. Perhaps our universe came from somewhere where cause and effect has no meaning.
It's a difficult concept... don't worry, I wouldn't expect that most of you would be able to grasp it. Hence religion is a good alternative for you. It's easier and you don't have to think, the church does the thinking for you. Religion is the science of the lazy.
Well, that's the current theory anyway, it's fair more logical and likely than a god. Further Scientific/ technological advancement will answer more questions and bring us closer to the answer. Faith will not add to the glory of mankind.
Go ahead and argue this... showing evidence, of course (as all good HSC students should be able to do by now.)