Complex sentence: At first the cracks appeared to pose no real danger and the aliens were able to observe other words through them, eventually however the true nature of the Cracks became apparent and Saturnyne was consumed, forcing the Saturnynians to flee through the smaller cracks to other worlds.
Split into simpler sentences: At first the cracks appeared to pose no real danger and the aliens were able to observe other words through them. Eventually however, the true nature of the cracks became apparent and Saturnyne was consumed, forcing the Saturnynians to flee through the smaller cracks to other worlds.