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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>hence the light from the farthest will take billions of years to reach us
This is why.
We can only see as far as the farthest objects whose light has had time to reach us. The universe is about 13.7 billion years old, so we can only see things whose light has traveled 13.7 billion years to get to us. Anything farther away and light hasn’t had enough time to reach us yet
The universe is also expanding, in the sense that space itself is stretching out. That’s its own ELI5, but the consequences here are 1) the light that traveled 13.7 billion light years to reach us actually started closer, because the distance got bigger as it was traveling and 2) some things we can never observe because they’re moving away from us faster than light, so the light will never be able to catch up to us.
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