Chandrayaan-1 was the first Indian lunar probe under the Chandrayaan programme. It was launched by the Indian Space Research Organisation in October 2008, and operated until August 2009.
After almost a year the orbiter started experiencing several technical issues including failure of the star tracker and poor thermal shielding; Chandrayaan-1 stopped communicating at about 2000 UTC on 28 August 2009 shortly after which the ISRO officially declared that the mission was over.ISRO's Chandrayaan-1 mission, despite its share of challenges and setbacks, left an indelible mark on lunar exploration by discovering water on the Moon's surface.
Chandrayaan-2 is the second lunar exploration mission developed by the Indian Space Research Organisation, after Chandrayaan-1. It consists of a lunar orbiter, and formerly included the Vikram lander and the Pragyan rover, all of which were developed in India.
Unfortunately, the mission faced a setback when the Vikram lander failed to make a successful soft landing on the lunar surface. ISRO Chairman K Sivan on Thursday said that the Chandrayaan-2 mission could not achieve success due to a small error that occurred during the lunar mission in the year 2019.
Chandrayaan-3 is the third Indian lunar exploration mission under the Indian Space Research Organisation's Chandrayaan programme. It consists of a lander named Vikram and a rover named Pragyan, similar to those of the Chandrayaan-2 mission.
The Indian Space Research Organisation (ISRO) shared a video on Friday, August 25, of the rover's rollout from the lander, marking a historic moment in India's space mission. However, according to their post, the rover ramped onto the Moon on Wednesday, August 23 i.e. the day it landed.