Isro chief Dr K Sivan said they have lost contact with Vikram lander. (Photo: Reuters file)

The Indian Space Research Organisation (Isro) has lost contact with Vikram Lander of Chandrayaan-2. The mission suffered a technical glitch moments before Vikram's scheduled landing on Moon's surface.

Speaking about the situation, Isro chief Dr K Sivan said everything was normal till the time Vikram lander was 2.1 km above Moon's surface.

He said the communication between Vikram Lander and the ground station was lost thereafter. "Data is being analysed. Vikram Lander's descent went as planned and everything was normal till it was 2.1km above the lunar surface," Dr Sivan said.

This is Mission Control Centre. #VikramLander descent was as planned and normal performance was observed up to an altitude of 2.1 km. Subsequently, communication from Lander to the ground stations was lost. Data is being analyzed.#ISRO ISRO (@isro) September 6, 2019

HERE IS WHAT EXACTLY HAPPENED

At 1.37 am, Isro tweeted that the final descent of Vikram Lander has started. It said Vikram Lander has started its powered descent. "Rough braking of Vikram Lander begins," the tweet said.

Once the power descent of Vikram Lander started, scientists at Isro's Telemetry Tracking and Command Network (ISTRAC) were glued to their terminals, anticipating the soft landing.

At 1.49am, Isro tweeted, "Rough breaking of Vikram Lander ends and fine braking phase starts."

Soon, scientists clapped and cheered as Vikram Lander completed the rough braking phase before the fine braking phase started.

It was then that the scientists started becoming tense and went into a huddle.

Isro Chairman K Sivan was seen engaged in intense discussions with some scientists.

Soon he announced that the Vikram lander descent was as planned and normal performance observed up to altitude of 2.1 km.

Subsequently communications from Vikram Lander to ground station was lost, he said, adding the data was being analysed.

Soon after, Prime Minister Narendra Modi, who was present in the premises to watch the historic moment, addressed Isro scientists and said they shouldn't be disheartened. "Nation is proud of you, be courageous. You have given your best and have always made India proud," PM Modi said.

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