India knew much before Galileo that earth was a sphere and it rotated on its axis. Even that the sun is a star was mentioned much before anyone else called it thus. Vedas spoke about various layers of atmosphere, topics of chemistry like water breaking into Prana (Oxygen – the life supporting air) and Hydrogen (Udana- the upward moving air), that was used to create Pushpak Vimana (airplanes) and many more…..