Question: what is mk in gslv mk3?
Answer: The Geosynchronous Satellite Launch Vehicle Mark III (GSLV Mk III), also referred to as the Launch Vehicle Mark 3 (LVM3), is a three-stage medium-lift launch vehicle developed by the Indian Space Research Organisation (ISRO). ... The GSLV Mk III has a higher payload capacity than the similarly named GSLV Mk II.