Can you explain how you would prove something is significant scientifically? I can't think of a single method.

Science explains the mathematical relationship between measurable quantities. It doesn't provide any method for measuring the importance of these relationships. If there's no way of measuring it, then in scientific terms there's no such thing as significance or importance.

If you look at statistical significance for example, there will be some arbitrary threshold above which something is considered significant, but there is no explanation for how this threshold is determined. And even then what they really mean is something is X times rarer than Y, but that doesn't mean it's significant in a philosophical sense.