They are produced by decay on earth where there is decay. How else were they produced??? Man is not God, and we cannot project our prison reality oout to infinity and beyond. Nothing took 168,000 years to do anything. Anywhere. Ever.
Guys, is there really any need to prolong this futile exercise further?
I promoted this mess of my own free will. I'm going to close it if you don't say just a little something a tiny bit novel soon, Keys/Simple. This same old "split" stuff is not even worth a giggle any more.