Bhuvan, meaning earth, is the addition to the numerous scientific innovations by SAC and is a satellite mapping tool, just like Google Earth or Wikimapia, but allows you to zoom far closer than the aerial view from a chopper. If Google Earth shows details upto 200 metres distance and Wikimapia upto 50 metres, Bhuvan will show images upto 10 metres, which means you can easily see details upto a  three floor high building and also add information. 

Google Earth                          Bhuvan 

Zoom levels up to 200 mt              Zoom levels up to 10 mt 

Single layer information                 Multi-layer information 

Images upgraded every 4 years      Images upgraded every year 

No alternate viewing options         Options of viewing on different dates 

Uses international satellites          Uses Indian satellites