The Rigveda, the oldest of the four Vedas, contains hymns and verses that provide insights into the ancient Indian understanding of the universe and its creation.

Brahman is the ultimate reality and the source of all existence in Indian Cosmology. It is the eternal, infinite, and unchanging principle that permeates the universe.

Samsara is the cycle of birth, death, and rebirth that souls undergo until they achieve liberation or moksha.

Hiranyagarbha, meaning 'golden egg', is the cosmic egg from which the creator god Brahma emerged, initiating the creation of the universe.

Aryabhata, a renowned astronomer and mathematician, proposed the theory of the Earth's rotation on its axis in the 5th century CE.

Moksha, also known as liberation or enlightenment, is the ultimate goal in Indian Cosmology, where the soul breaks free from the cycle of Samsara and attains unity with Brahman.

The Puranas, a collection of ancient Indian texts, provide detailed accounts of the universe's structure, cosmology, and the genealogies of gods and kings.

Kshirasagara, meaning 'ocean of milk', is the cosmic ocean from which the universe emerged according to some Indian cosmological traditions.

Aryabhata also proposed the theory of the Earth's revolution around the Sun, known as the heliocentric model, in the 5th century CE.

Sattva, Rajas, and Tamas are the three gunas, or qualities, that govern the universe and influence the nature of matter and consciousness.

Aryabhata's astronomical calculations and models were remarkably accurate, demonstrating his expertise in astronomy and mathematics.

The four yugas represent the cyclical nature of time and the gradual decline of righteousness and morality over time.

Bhaskara II developed a method called the 'karana-kuttaka' for calculating the positions of celestial bodies based on their longitudes.

The five elements or panchamahabhutas are the building blocks of the material world and are associated with different qualities and properties.

Brahmagupta developed a method called the 'ardharatrika-ganita' for calculating the time of sunrise and sunset based on the latitude of the observer.