Please correct me if I’m wrong in understanding big bang, I understood that there was nothing in the beginning and everything was formed all at once, hence the light from the farthest will take billions of years to reach us to see it’s present moment and so why is matter limited, honestly feels like a computer simulation since everything is limited in nature.
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Because it’s not infinite in time. Light takes time to travel, and the universe as we know it has a beginning. So there is some distant location from which light from the earliest moment could just now be reaching us. The current distance to that location defines the “observable universe”.
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