Comment: Like I stated,

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Like I stated,

there is SOME element of faith and belief involved. But the theory itself is prone to change. I do believe the theory itself was modified several times and refined over time. New data may might still make it possible for the theory to be discarded altogether. But at the moment, data suggests it's the most reliable theory at the moment. It's not like they pull these theories out of their asses. They make computer simulations based on these theories based on their understanding of particle physics and compare it with telescope data.

The difference between a theory within science itself is vastly different from a regular theory in religion or common speech. A theory within science has been tested extensively before it even has a right to be called a theory. It's this extensive testing and verification that puts a scientific theory heads and shoulders above a normal theory from religious/normal people.