fighting ignorant: I meant Webster’s definition of astrology.
I’m with legion on this one. My specialty was General Relativity, which means some could consider me an astrophysicist. It always makes me cringe when I hear “science” questions like this one.
“Signs” mean astrology. Astronomers use signs to know the speed limit and to watch their step. They label regions of the sky with constellations. Astronomy would have existed without astrology. Lots of people’s studied the night sky. Most peoples did not practice what we think of as astrology.
Astrology is not a science. Not by the modern definition of science. In the Middle Ages science had a broader meaning that might be construed to include astrology - if what we think of as astrology had existed then. (What we think of as astrology took a hiatus of several thousand years.)
Jeff Olsen, which Webster’s are you using that has such an egregious error? Saying “Webster’s” pretty much just means an American dictionary.