The Rigveda, one of the four Vedas, contains hymns and verses that provide insights into ancient Indian cosmological beliefs and concepts.

In the Rigveda, Brahman is described as the ultimate reality, the source and essence of all existence, and the underlying unity of the universe.

Kapila, the founder of the Samkhya school of philosophy, is considered to be the first Indian philosopher to propose the idea of a multiverse, or multiple universes.

Prakriti, in Samkhya philosophy, is the fundamental principle of matter and energy, the primordial substance from which the universe is manifested.

In Samkhya philosophy, Prakriti and Purusha are interdependent, with Prakriti being the active principle and Purusha being the passive principle.

The Rigveda mentions the Hiranyagarbha as the cosmic egg from which the universe emerged.

In Nyaya-Vaisheshika philosophy, the universe is composed of eternal and indivisible atoms, which combine to form various substances and objects.

In Nyaya-Vaisheshika philosophy, space and time are considered to be infinite and continuous, existing independently of objects and events.

The Yajurveda contains references to the Brahmanda as a symbol of the universe.

In Advaita Vedanta, Brahman is the ultimate reality, the non-dual, infinite, and unchanging consciousness that pervades all existence.

In Advaita Vedanta, the individual soul (Atman) is considered to be identical with Brahman, the ultimate reality.

The Rigveda mentions Vishnu's Thousand Heads as a symbol of the vastness and infinity of the universe.

In Jain cosmology, Ajiva is the fundamental principle that encompasses all non-living substances and entities in the universe.

In Jain cosmology, Moksha, or liberation from the cycle of birth, death, and rebirth, is the ultimate goal of existence.

The Rigveda mentions Brahmaloka as the abode of Brahma, the creator god, and the highest realm of existence.