At present, the material world is the only world we know. Science tells us that we're on one planet among many, in one galaxy among many, in one solitary universe of incomprehensible size and complexity.
The Vedas tell us more. They say that this universe is one among countless others, each at least as big and complex as this one.
The Vedas also tell us that the material world has a creator, and He created it with a purpose. In pursuit of that purpose, He has placed living beings on every planet in every universe, most in forms now imperceptible to us.
"This material nature, which is one of My energies, is working under My direction, O son of Kunti [Arjuna], producing all moving and nonmoving beings. Under its rule this manifestation is created and annihilated again and again." –Sri Krishna, Bhagavad-gita 9.10