The BJP hit back accusing the Congress of drawing the issue into political arena.
The year ended with the launch of the PSLV's 50th mission.
'All possible efforts are being made to establish communication with (the) lander,' the ISRO further said in a tweet.
"The duration of manoeuvre was 1,738 seconds. With this, Chandrayaan-2 was successfully inserted into a Lunar orbit," Indian Space Research Organisation said.
NASA said it is looking forward to explore the solar system with its Indian counterpart.
Two de-orbit manoeuvres of Vikram Lander, to bring it further down, have been planned to prepare for its landing in the south polar region of the moon.
The Chandrayaan-2 spacecraft is expected to reach the moon's orbit on August 20 and land on lunar surface on September 7.
The primary goal of HysIS, whose mission life is five years, is to study the earth's surface in visible near infrared and shortwave infrared regions of the electromagnetic spectrum.
Boosting India's communication services, its latest satellite GSAT-16 was successfully launched on board Arianespace rocket from the spaceport of Kourou in French Guiana in the early hours of Sunday, after a delay of two days due to bad weather.
The heaviest rocket of the Indian Space Research Organisation -- LVM3-M2/OneWeb India-1 -- blasted off from the Sriharikota spaceport on Sunday to place 36 broadband communication satellites into the Low Earth Orbit (LEO) for a UK-based customer.
Although Russia, United States and China have achieved a soft landing on the lunar surface, India is aiming at becoming the first one to explore the south pole of the Moon.
GSAT-18, which aims at providing telecommunications services for the country by strengthening ISRO's current fleet of 14 operational telecom satellites, was launched into a Geosynchronous Transfer Orbit about 32 minutes after the lift-off.
ISRO Chairman K Sivan described the GSAT-11 as the "richest space asset" for India.
Scientists also expressed the hope that any technical problem will be sorted out by ISRO, and the mission will be launched successfully.
The nine-second de-orbiting or retro-orbiting manoeuvre was executed at 3.42 am using the onboard propulsion system.
'It is time we Indians learnt to believe in ourselves, and stopped questioning our own capabilities every time a space launch is not a glorious success,' says M D Riti.
Other than the Cartosat-2 series satellite, the PSLV is carrying 29 nano satellites from 14 countries - Austria, Belgium, Chile, Czech Republic, Finland, France, Germany, Italy, Japan, Latvia, Lithuania, Slovakia, the United Kingdom and the United States of America besides a nano satellite from India.
ISRO needs next generation launchers and new facilities to manufacture and launch them.
We sorted through countless photographs taken around the world to come up with the top photos of 2019. Together these images tell the story of the year -- capturing moments of hope and heartbreak, triumph and tragedy.
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