New Delhi, Oct 31 (PTI) Prime Minister Narendra Modi on Saturday congratulated scientists and engineers at ISRO on the successful launch of GSLV-F18 carrying NVS-03 and said the mission marks. PM Modi congratulated the Indian Space Research Organisation (ISRO) for the successful launch of its GSLV-F18 rocket carrying the navigation satellite NVS-03, describing the mission as an.