Gaganyaan: Uncrewed mission may happen without desi relay satellite; Isro may use foreign satellite SECTIONS Share Synopsis The Gaganyaan Advisory Council (GAC) that met recently has also advised Isro not to delay the uncrewed mission. Agencies (This story originally appeared in on Apr 08, 2021)NEW DELHI: Isro, which has dedicated most of its resources to ensure the uncrewed mission as part of the Gaganyaan programme takes off this year as announced in the union budget, is confident of a December launch even as work on some systems are still ongoing. And, the agency may go ahead with the uncrewed mission without the indigenous data relay satellite and some aspects of the human rating of the systems. But both will be ready much ahead of the launch of humans.