Polar Satellite Launch Vehicle (PSLV) in its twentieth flight PSLV C-18 proved its reliability and consistency by successfully launching four satellites with a total pay load of 1047 kgs from Satish Dhawan Space Centre(SDSC) - SHAR, Sriharikota on 12th october 2011. The four satellites are Megha-Tropiques, an Indo-French mission to study the weather and climate in the tropical regions of the world; SRMSat, built by students of SRM University, near Chennai; Jugnu, put together by Indian Institute of Technology, Kanpur students; and VesselSat from Luxembourg...