Verse 35

यथेयं हि जगत्सारं तथान्यानि जगन्त्यपि ।विद्यन्ते समतीतानि भविष्यन्ति च भूरिशः

In plain words

Just as this [creation] is indeed the substance of a world, so too do other worlds exist — some already passed away, and very many more yet to come.