The Indian Space Research Organisation (ISRO) launched the first of the second-generation satellites for its navigation constellation successfully on Monday morning. The 2,232 kg satellite, the heaviest in the constellation, was launched by a GSLV rocket that lifted off from Sriharikota at 10:42 am. Each of the seven satellites currently in the Indian Regional Navigation Satellite System (IRNSS) constellation, operationally named NavIC, weighed much less — around 1,425 kg — at liftoff. They all rode the lighter Polar Satellite Launch Vehicle (PSLV), ISRO’s workhorse launch rocket. The last IRNSS satellite, IRNSS-1I, was launched in April 2018 to replace an older,...