Indian Astronomy

The traditional Indian knowledge was aware of the planets like Mercury(Budha), Venus(Shukra), Mars(Mangala), Jupiter(Guru) and Saturn(Shani). I wonder whether we can identify if that's a self-developed or borrowed discovery.

The traditional Indian Astrology adds two additional planets Rahu and Ketu to this set. I think that shows it was not an autochthonous idea. If it was then they would have known how those planets were identified in the first place (like the Greeks did). And if they knew the systematic study that went behind it, they wouldn't have taken the poetic liberty to add two additional planets, unless of course, if one considers Astrology is some kind fantasy poem.

Position of Tulu Language - V

For whatever its worth;

While the NeighborNet network clearly distinguishes three groups, reticulate signal is evident for Tulu, which is located on the edge of the South I subgroup and shows some affinity with Brahui, and Telugu and Koya. 

I've previously argued that Tulu was influenced by Telugu or SD-II languages.

Reference:
A Bayesian Phylogenetic study of the Dravidian Language Family, Kolipakam et al. (2018)