The GSLV-Mk III-D1 launcher would carry GSAT-19 satellite which has a mass of 3,200 kg. The Geosynchronous Satellite Launch Vehicle-Mark III (GSLV-Mk III), the heaviest rocket ever made by India and capable of carrying large payloads, is set for launch from the Satish Dhawan Space Centre in Sriharikota on June 5, 2017. Here are a few facts you need to know about the rocket. 1. GSKV-Mk III is capable of launching four-tonne satellites in the Geosynchronous Transfer Orbit (GTO). 2. The rocket is also capable of placing up to eight tonnes in a Low Earth Orbit (LEO), enough to carry a manned module. 3. GSLV-Mk III’s first developmental flight, D1, will carry on June 5 the GSAT-19 satellite — developed to help improve telecommunication and broadcasting areas. 4. This is India’s first fully functional rocket to be tested with a cryogenic engine that uses liquid propellants — liquid oxygen and liquid hydrogen. 5. It took about 25 years, 11 flights and over 200 tests on differ