chair said:
It says"in science it describes an explanation that has been tested and widely accepted as valid"...
Your definition explains why common ancestry is not science.
From the Wiki Link you used it says
"
A scientific theory is an explanation of an aspect of the natural world that can be repeatedly tested and verified in accordance with the scientific method, using accepted protocols of observation, measurement, and evaluation of results."
Common ancestry (and Biblical creation) is a belief about the past that can't be observed. What we can do is observe and test things in the present, and we interpret through our own personal biases. Interpreting evidence to fit a priori beliefs is not science. And.... That is why real science often exposes the shoddy conclusions of evolutionists. A few examples
* Evolutionists claimed our appendix was a useless evolutionary vestige.
† That was not science...it was a false belief.
* Evolutionists claimed so called psuedogenes and retroviruses were functionless evolutionary remnants.
† That was not science...it was a false belief.
* Evolutionists claimed Neandertals were dim-witted...inarticulate...lacked culture...portrayed with furry bodies and postures similar to knuckle walkers... didn't bury dead with ceremony.... Carnivores....more
† That was not science...it was a false belief.
* Evolutionists claim C¹⁴ dates of dino tissue shouldn't be done since the fossils are too old.
† That isn't science...it is a fear of following evidence that might contradict apriori beliefs.
* Evolutionists claimed our eyes were a sloppy backwards wired design.
† Science shows it was a claim based on false beliefs and lack of knowledge.
* Evolutionists claimed Piltdown was a human ancestor and promoted this claim for many years in text books and journals.
† Science shows Piltdown never existed.
* Evolutionists claimed peppered moths were evidence of evolution in action.
† Science shows birds find it easier to see a white moth on a black background.
* Evolutionists claimed natural selection eliminates the deleterious mutations allowing beneficial mutations and time to evolve microbes into microbiologists.
† Science has shown genetic load is irreversibly increasing. (Rather than accept the science, evolution of proposed many hypothetical and unrealistic solutions such as antagonistic epistasis, quasi truncation, the multiplicative model relaxed selection and others)
Those are just a few of the many examples where evolutionists have confused their beliefs with science. Fortunately, true science helps expose the false belief system of common ancestry. It is an exciting time for bible-believing Christians as science helps confirm the truth of scripture