****#PIONEER VENUS PROJECT#****

POINEER VENUS PROJECT'S MAIN OBJECTIVE WAS TO INVESTINGATE THE SOLAR WIND IN THE VENUS ENVIROMENT ,MAP THE PLANET SURFACE THROUGH A RADAR IMAGEING SYSTEM AND STUDY THE CHARACTERSTIC OF THE UPPER ATMOSPHERE AND IONOSPHERE .PIONEER VENUS CONSIST OF TWO SPACE CRAFT .THE RBITER AND MALTIPROBE. THE ORBITER CARRIED AN ASSORCMENT  OF INSTRUMENT FOR INVESTING PLASMA IN UPPER VENUSIAN LAYER AT A VERITY OF WEVELENGTHS .IT WAS LAUNCHED ON MAY 20,1978. IT REACHED THE ORBIT AROUND VENUS 9,1978.

 IT WAS MADE OF 5 SEPRETE PROBES -THE PROBE TRANSPOTER [REFFER TO AS THE BUS ]A LARGE ATMOSPHERICS ENTERYPROBE [CALLED SOUNDER] AND THREE SMALL PROBES .