ISRO chief K Sivan said that India's moon mission is 'not a failure' and that only a 'small amount of communication is lost' from Vikram lander to the ground station on the Chandrayaan 2 mission.
Speaking of ISRO "highly complex mission," Sivan said, "The mission is not a failure, it is not a setback. We lost a small percentage of information that's all." Sivan further asserted that ISRO will try to establish a link for the next two week, saying, "Right now the communication is lost, we will try to establish a link for the next 14 days."
#LIVE on #ProudOfISRO | We will also parallely search with the orbiter: K Sivan, ISRO Chairman, confirms that attempts are still being made to establish contact with the lander: K Sivan, ISRO Chairmanhttps://t.co/Ar5oNWEpM1 pic.twitter.com/7hjyHM96Cs— Republic (@republic) September 7, 2019
"The powered descent of the Lander to soft-landing had four phases- rough braking, position, fine braking, and terminal phase. The first three phases were executed properly. The fourth phase was not executed properly hence we lost the connection with the Lander. Regarding the technology demonstration part - we could go from 30 km to 2 km of the moon. Hence I would say that the technology demonstration was 90-95% was done. So, in total, Chandrayaan 2 mission is very close to 100% success," he added.
Launched on July 22, Chandrayaan 2 brought together an Orbiter, Lander, and Rover to explore the unexplored south pole of the Moon, the statement further said. ISRO said that "it was a unique mission which aimed at studying not just one area of the Moon but all the areas combining the exosphere, the surface as well as the sub-surface of the moon in a single mission."
Earlier on Saturday morning at 1:50 AM when Vikram was scheduled to land, ISRO's Deep Space Antenna lost communication with Chandrayaan-2's lander- Vikram as it descended towards the lunar surface. The lander had descended from 30 km to 2km smoothly. During the final smooth braking stage, it had lost communication with Mission Control. Vikram was aimed at soft-landing on the moon, making India the fourth country to do so.
ISRO defined the success criteria for each and every phase of the mission and added that 90 to 95% of the mission objectives have been accomplished to date. It said that the mission will keep contributing to Lunar science in spite of the loss of communication with the Lander.