India bagged two gold and a silver medal at the the 15th International Astronomy Olympiad (IAO) held in Ukraine. Academic coordinator of the Indian Astronomy Programme,Dr Aniket Sule, said in Mumbai, a three-member junior category students team had participated in the Olympiad which concluded today.While Sharad Mirani from Ahmedabad and R Sasibhushan Bharadwaj from Hyderabad bagged gold medals, Pritish Patil from Nashik won the silver medal.He said,a total of 19 teams from 17 countries participated in the Olympiad including China, Korea, Romania, Russia, Serbia, Italy, Indonesia and Thailand amongst others.