How do we know everything about universe with such precision?

Question

I understand that we build models and do calculations but aren’t there any potential errors/assumptions? That accumulate over multiple calculations and grow bigger the further we go back or over distance?
I.e. “At approximately 10−37 seconds into the expansion, a phase transition caused a cosmic inflation, during which the universe grew exponentially, unconstrained by the light speed invariance, and temperatures dropped by a factor of 100,000.”

In: Physics

Answer 1

errors might always happen, but if your work is reviewed by peers, it usually mean its pretty good.

for space and the universe, we dont know much actually, we mostly have approximations. accurate approximations but still approximations.

tho i wouldnt suggest taking your infos from wikipedia, which is, at best, incomplete, at worst, completely wrong. but its still better than reddit for sure.