Just a question for agnostics. If there is no God then how did the matter of our universe originate? What is the general answer on that question from agnostics. I am not looking to argue the point and am really just curious as to their thoughts behind that.
The matter in our universe originated from the big bang. Building blocks of particles were created from the energy release tiny fractions of a second after the big bang occurred. There were equal amounts of particles and antiparticles, but for some reason there was a tiny fraction more particles. Most of the particles and antiparticles annihilated each other, but the small amount that survived eventually interacted together and formed hydrogen atoms.
These hydrogen atoms clumped together (in a similar way dust bunnies under your bed are formed) until they became so massive, the internal pressure sparked nuclear fusion...becoming the first stars.
The fusion in these stars created a byproduct of helium. When a star runs out of it's hydrogen fuel, it starts creating more elements up the periodic table until it reaches iron. Once a star's core starts producing iron, it can no longer maintain fusion and it will go nova.
Some massive stars violently explode and become supernovas. Supernovas are so incredibly energetic that they smash existing elements into each other to make heavy elements. Supernovas produce most of the universe's supply of elements that appear after iron on the periodic table...as Carl Sagan put it "We're all star stuff." That's where matter comes from.
The problem with God is he is used to explain what we can't explain...but we keep discovering explanations for things. At this point, we can actually directly see the universe about 300,000 years after its formation, and we have mathmatical models that simulate its formation to a few trillionths of a second after its formation.
What we can not say is "What caused the big bang." We have some ideas, but we may never be able to know for sure as it would require information from outside of our universe to be brought in...and we're not even sure that's possible. So, if you want to believe in creationism, you can currently say "God created the big bang, he created physics, and we're the direct result of that" and be as correct and valid as any other person.
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