No.

No. The two things - astronomy and astrology - are quite unrelated.

I don't believe in astrology.

Astrology and astronomy used to be the same science.

When astronomy is associated with mythology, and myths are created from it, the name becomes astrology.

Astronomy did not really benefit the dark ages. Back then they relied more on ASTROLOGY. It was not until the Renaissance that people started devising a difference between astrology and astronomy, and consequently started making headway in astronomy.