Yes. Proof does exist in science! Spontaneous Generation was proven false. People studied the matter. Flies don't pop out of nowhere. People did experiments. You know, science?
So if I do a single experiment that doesn't observe Spontaneous Generation, that means Spontaneous Generation is impossible? Maybe it just didn't occur in that one experiment. Maybe the experiment was poorly designed. Maybe my equipment malfunctioned. Maybe it just doesn't happen very often. The only way to prove that Spontaneous Generation false with 100% certainty is to have perfect fly detectors covering 100% of the universe. Even if "people" did 100 experiments, that doesn't
prove anything. This is why any semi-serious experiment will put a lot of time into determining reasonable error bars.
Per your redshift query, it is based on multiple hypothesis'.
As is any observation.
Blueshift and redshift as we experience on Earth doesn't occur with stars and galaxies. The theories need to be modified. Most galaxies we see are redshifted to a degree that doesn't really make sense
Most galaxies lie on a nice straight line. How does that not make sense?
The cosmological redshift is known as Hubble’s law, and postulated that the known universe is expanding. Hypothetical mechanisms were put in place to change the observation and its implications into an expanding universe.
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If your science is merely about getting things to seem to work, then you are basically just telling me a story. Astronomy is a contest of who has the best explanations and stories. It is simply not a science like other science.
You're now quibbling about the interpretation of the results. My question was about the observation itself: what part of my observation of redshift is not scientific? You're acting like astronomy is the only field of science where there are multiple possible interpretations for a single observation.