

The Indian Space Research Organisation (ISRO) has successfully launched its heaviest rocket so far. The communication satellite GSAT-19 into space using the 'fatboy' rocket has successfully launched at 5:28 PM today.
The mission would augment India's communication resources as a single GSAT-19 satellite will be equivalent to having a constellation of six to seven of the older variety of communication satellites in space.
The GSLV MKIII D1/GSAT-19 mission takes India closer to the next generation launch vehicle and satellite capability. The nation is proud!
Narendra Modi (@narendramodi) June 5, 2017
Big breaking news from ISRO: watch now and feel a surge of pride in our scientists! #GSLVMK3 pic.twitter.com/gKDkx9l3ZO
Rajdeep Sardesai (@sardesairajdeep) June 5, 2017
Models of all 3 rockets of ISRO, PSLV, GSLV Mark II and #GslvMarkIII on display at Media Centre, @isro , #Sriharkotta. #AIRPics:Jayasingh pic.twitter.com/Z2oXqITdgu
All India Radio News (@airnewsalerts) June 5, 2017
At present, out of a constellation of 41 in-orbit Indian satellites, 13 are communication satellites, and the total mission life of the GSAT-19 is 10 years.
A communications satellite is an artificial satellite that relays and amplifies radio telecommunications signals via a transponder. It creates a communication channel between a source transmitter and a receiver at different locations on Earth.
Communications satellites are used for television, telephone, radio, internet, and military applications. There are over 2,000 communications satellites in Earth's orbit, used by both private and government organisations.