ISRO To Launch Data Relay Satellite To Help Track Gaganyaan The satellite will be launched before the final leg of the Gaganyaan mission, which will send astronauts to the Lower Earth Orbit (LEO). The Rs 800-crore project has been approved and work has been going on. (Representational image.) Outlook Web Bureau 2021-04-25T15:09:18+05:30 ISRO To Launch Data Relay Satellite To Help Track Gaganyaan outlookindia.com 2021-04-25T15:11:14+05:30 Also read To help maintain contact with the Gagangyaan mission throughout after the launch, the Indian Space Research Organisation (ISRO) will launch a data relay satellite, sources said. "We're planning to launch our own satellite, which will act as a data relay satellite before going for the first human space flight," the sources said.