Indian Space Research Organisation scales 104 heights. The Indian Space Research Organisation (ISRO) on Wednesday launched a record 104 satellites in one shot on board its workhorse rocket system, the Polar Satellite Launch Vehicle (PSLV).Earlier, the highest number of satellites launched on a single mission by ISRO was 20 satellites in June 2016, on board PSLV C34.With Wednesday’s launch, the PSLV — ISRO’s medium lift rocket launcher — has put 226 satellites in space, including 180 foreign satellites and 46 homegrown ones.