"The successful launch of polar satellite launch vehicle carrying 31 satellites is a result of hard work of scientists for which they deserve praise," Kumar said in a statement here.
ISRO's workhorse rocket PSLV-38 had blasted off from the spaceport at Sriharikota this morning carrying the Cartosat-2 series satellite - a dedicated satellite for the defence forces - along with 30 co-passenger satellites.
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