Complex sentence: KIC 8462852 is not the only star that has large irregular dimmings, but all other such stars are young stellar objects called YSO dippers that have different dimming patterns.
Split into simpler sentences: KIC 8462852 is not the only star that has large irregular dimmings. However, unlike KIC 8462852, all other such stars are young stellar objects called YSO dippers that have different dimming patterns.