BENGALURU (ISTRAC, Isro centre): Once Vikram lander successfully lands in the south pole region of Moon around 1.53am early Saturday morning, Pragyan rover attached to Vikram's door will be exposed to the Sun after the door opens.Soon after getting solar rays, the rover's battery will be activated, which will unfold its solar panel . The six-wheeled rover with a national Tricolour and an Isro logo embossed on it, will descend on the lunar surface after four hours moving at a speed of 1cm per second and use navigation cameras to scan its surroundings.The scanned data will be relayed to the Isro control room via Vikram lander as the rover doesn't have an autonomous system to send signals directly to Earth. The data will be processed at the Isro mission control for path planning for Pragyan. Depending upon the kind of path, instructions will be transmitted to Pragyan via the lander for moving forward.Pragyan will overcome obstacles using the rocker bogie (a design that has no springs or stub axles for each wheel, allowing the rover to climb over obstacles). Once it reaches a desired spot, the mission control instructs Pragyan to stop and determine elemental composition of lunar rocks and soil using its alpha particle X-ray spectrometer (APXS). The control room then will engage the laser induced breakdown spectroscope (LIBS) payload to derive the elemental composition of the lunar surface.LIBS will basically fire high-powered laser pulses at various locations and analyse the radiation emitted by the decaying plasma. The elemental composition data will then be sent back to Earth for further processing and examination.During its lifespan of 14 Earth days , Pragyan will move up to 500 metre. The data will be valuable in the sense that it will enrich humans' knowledge about the mineral composition and structure of the lunar surface in the south pole region.Isro chairman K Sivan told TOI that "Isro after processing the data sent by the lunar modue will put it in public domain so that it can be used by space agencies, including Nasa, across the world in order to plan better their future missions to Moon's south pole region"