Chandrayaan's lunar exploration program.

Chandrayaan is the name of India's lunar exploration program, which includes a series of missions aimed at exploring the Moon. The word "Chandrayaan" means "Moon vehicle" in Sanskrit. The program is managed by the Indian Space Research Organisation (ISRO), India's national space agency.

Chandrayaan-1, the first mission of the Chandrayaan program, was launched on October 22, 2008. It was an unmanned mission that successfully reached the Moon and operated until August 2009. Chandrayaan-1 carried various scientific instruments, including a high-resolution camera, an infrared spectrometer, and a moon impact probe. The mission contributed significantly to our understanding of the Moon's geology, mineralogy, and presence of water molecules on its surface.

Chandrayaan-2, the second mission of the program, was launched on July 22, 2019. It consisted of an orbiter, a lander called Vikram, and a rover named Pragyan. The mission aimed to soft-land the lander and deploy the rover on the lunar surface. However, during the landing attempt in September 2019, contact with the lander was lost, and the mission did not achieve its primary objective of landing on the Moon. Despite the partial success, the Chandrayaan-2 orbiter continues to orbit the Moon, conducting scientific observations.

Chandrayaan-3 is the upcoming mission of the Chandrayaan program, planned by ISRO. It is intended to be a follow-up mission to Chandrayaan-2, with a focus on landing a lander and rover successfully on the lunar surface. However, as of my knowledge cutoff in September 2021, specific details about the Chandrayaan-3 mission, including its launch date, have not been officially announced. For the latest information on the Chandrayaan program and its missions, it is recommended to refer to the official updates from ISRO or reliable news sources.