Space XPoSat mission The Indian Space Research Organisation has announced a plan to launch its first Xray Polarimeter Satellite (XPoSat) to investigate the polarisation of intense X-ray sources. The XPoSat is designed for observation from a low earth orbit. It will carry two scientific payloads. The mission life is expected to be approximately five years. The primary payload was developed by the Raman Research Institute, Bengaluru with support from ISRO centres. The secondary payload was developed by the U.R. Rao Satellite Centre, ISRO.