5,000 Years Ago - The Indus Civilization
In particular the famous Indus Valley seals depict, amongst other things, characters from the Rig Veda:
In an interesting book, The Indus Script and the Ṛg-Veda by Egbert Richter-Ushanas - the author links images from the seals to the Nakshatras. For example he writes that Magha was originally called Agha relating to a time when the bulls were killed (because the stem gha of root han means "to kill") as a wedding feast sacrifice in preparation for the wedding feast during the lunar month of Phalguni, which is Vaishakha (April-May).
Below is one of the seals believed to be an early form of Shiva-Rudra:
|"Paśupati "Lord of all animals" was originally an epithet of Rudra in the Vedic period" (Wikipedia)|
These seals were merchant's tags on their merchandise and as such would have born the name of the merchant. There is a theory, based on an old tradition of being named after the stars you were born under, that the merchant names on these seals are names of constellations. (See this TED Talk for the full explanation.)
Technologies of ancient India
Khurshed Batliwala presents fascinating evidence on how scientific genuius is a outgrowth of advanced meditation "In ancient India scientists were saints":