THIRUVANANTHAPURAM: When the 4.4-ton GSAT-7R communication satellite lifts off from Sriharikota on Sunday, it will mark India’s largest satellite launch ever.

The mission will use the LVM-3 rocket, the same vehicle that launched Chandrayaan-3. This will be the first time ISRO is launching such a heavy satellite from Indian soil. Until now, satellites weighing over four tonnes were launched from Kourou Spaceport in French Guiana using Ariane rockets of the European Space Agency.

The GSAT-7R (also known as CMS-03) has been developed to replace India’s first military communication satellite, GSAT-7, which has completed its operational life. The new satellite will mainly serve the Indian Navy and is equipped with more advanced communication systems than its predecessor. The satellite include

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