The ISRO launched 100th satellite from Satish Dhawan Space Centre in Sriharikota on Friday. On its 42nd mission, ISRO's trusted workhorse 'PSLV-C40' carried the weather observation 'Cartosat-2' series satellite, which was successfully put in earth's orbit. The rocket was also carrying 30 co-passengers at lift-off at 9.28 am. This was the first mission after the failure of the PSLV on August 31, 2017, where the heat shield malfunctioned, as a result of which the satellite failed to enter orbit. This was also the first launch for ISRO in 2018. The weight of all the satellites put together is about 1,323 kg. Watch this video to find out more.