"Can you bind the cluster of the Pleiades, or loose the belt of Orion? Can you bring out Mazzaroth in its season? Or can you guide the Great Bear with its cubs?" Job 38: 31
We have learned in this century that the stars of Pleiades are gravitationally bound (they used to be called the "Seven Sisters" by constellation buffs). We have also learned just in this century that the stars of Orion are not gravitationally bound!
If you ever want to do an interesting study, look at the Hebrew Mazzaroth and 12 Signs of the Zodiac (and I am not speaking about astrology here)! A good source of information is Ken Fleming's work, God's Voice in the Stars.