Mumbai, July 8 -- Group Captain Shubhanshu Shukla spoke to Isro chairman V Narayanan on Sunday - their first conversation since Shukla scripted history as the sole Indian astronaut to reach the International Space Station (ISS). Shukla's call to Narayanan, also secretary of the department of space, was an acknowledgment of the Indian space agency's team's efforts in ensuring his safe travel to the ISS. According to Isro, Narayanan, during the call, expressed his "keen interest" in Shukla's well-being and inquired about the various scientific experiments and activities being conducted on the ISS. "The Chairman emphasised the significance of documenting all experiments and activities meticulously after Shubhanshu's return to Earth, as this wi...