Isro's next challenge: Taming the 'naughty boy' GSLV

India has long proved its proficiency in launching the kind of rocket Prime Minister Narendra Modi saw lift off on Monday, but the country’s future growth in space will depend exclusively on its success with the indigenous Geosynchronous Satellite Launch Vehicle (GSLV) programme that is now far from reliable. The Polar Satellite Launch Vehicle (PSLV) has been the work horse of Indian space programme, notching up 26 successful launches since 1994, but cannot carry communication satellites weighing more than 2,000kg into space. This …