The Indian Space Research Organisation on Monday successfully launched India's heaviest rocket 'Geosynchronous Satellite Launch Vehicle (GSLV) Mark III' carrying the 3,136 kg communication satellite GSAT-19. The 43.43-metre rocket that weighs 640 tonnes is capable of lifting payloads of up to 4,000 kg into the Geosynchronous Transfer Orbit. It was developed in 15 years at a cost of ₹300 crore.