In a firm indication that Gaganyaan will not be a one-off show of ISRO's technological prowess to place humans in space, but a program for sustained human presence in space is also envisioned, and the process to select second round of astronauts batch could begin in 6 months.

Current astronaut training centre in Bangalore is designed to cater only to demands of the first mission under Gaganyaan and ISRO will build a larger training facility. ISRO is considering multiple locations for this, including Challakere in Chitradurga, some 200km from Bangalore and Devanahalli on the outskirts of the city, where ISRO already has a guest house.

Sources now indicate that the larger facility — most likely in Devanahalli although Challakere is not ruled out yet — could accommodate 25-30 astronauts and maybe even their families. ISRO chairman S Somanath said in an exclusive interview: “We’ve not made such a plan yet as it is yet to evolve…It is clear that the Gaganyaan program has to continue. …So, we need to induct additional crew members and that process, maybe, should start in six months. We’ll work with IAF to identify a new set of crew members… It may not be in tens, maybe only four.” The new members will get trained for follow-on Gaganyaan missions, he said. “...Periodicity of Gaganyaan missions won’t be very frequent to start with because for sustained missions we will also need the space station to be ready. We’re only building that (first unit) by 2028, which won’t be human-capable. It will take more time for that. So, where the final astronaut facility will be decided later,” ISRO Chief Somanath added.

He said, at Devanahalli, ISRO is building the Environment Control and Life Support System (ECLSS) facility and technical facilities for the Human Space Flight Centre (HSFC), which is currently using UR Rao Satellite Centre’s space. ECLSS is a critical technology for astronauts’ health during the flight, during their time in space and during the return, and ISRO, which initially had plans of procuring this technology is now developing everything from scratch.

Could only one astronaut go on Gaganyaan 1st mission? It’s not ruled out! While initial plans was to send “two-three” astronauts to space, the selection of only 4 was indicative that only 2 may be sent going by global practice of shortlisting. “I cannot tell how many will eventually go.

The three uncrewed missions and abort missions must be completed, even after which there could be residual issues. So it depends on how confident we are at the end of that. A nat'l committee will decide later,” Somanath said.“...We’re building it for two people, not three…While we’re building it for two, we could even decide to send only one, but we need not take that decision now,” he added. All 4 Gaganyaan astronauts-elect will go to US by end of 2024 to train & become part of crew that will go to @Space_Station — which was announced during PM Narendra Modi’s recent visit to Washington. “While all four will go to train, only one will go to the ISS. The primary astronaut will go through full-fledged training, the back-up one will train a little less. The other two will also go for ground-level training,” Somanath said.

(With ISRO Inputs)