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Concept
Chandrayaan-1
Summary
Chandrayaan-1 (, ) was the first Indian lunar probe under the Chandrayaan programme. It was launched by the Indian Space Research Organisation (ISRO) in October 2008, and operated until August 2009. The mission included a lunar orbiter and an impactor. India launched the spacecraft using a PSLV-XL rocket on 22 October 2008 at 00:52 UTC from Satish Dhawan Space Centre, at Sriharikota, Andhra Pradesh. The mission was a major boost to India's space program, as India researched and developed indigenous technology to explore the Moon. The vehicle was inserted into lunar orbit on 8 November 2008.
On 14 November 2008, the Moon Impact Probe separated from the Chandrayaan orbiter at 14:36 UTC and struck the south pole in a controlled manner. With this mission, ISRO became the fifth national space agency to reach the lunar surface. Other nations whose national space agencies to have done so prior were the former Soviet Union in 1959, the United States in 1962, Japan in 1993, and ESA member states in 2006.
The probe hit near the crater Shackleton at 15:01 UTC. The location of impact was named Jawahar Point.
The estimated cost for the project was .
It was intended to survey the lunar surface over a two-year period, to produce a complete map of the chemical composition at the surface and three-dimensional topography. The polar regions are of special interest as they might contain water ice. Among its many achievements was the discovery of widespread presence of water molecules in lunar soil.
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 20:00 UTC on 28 August 2009, shortly after which the ISRO officially declared that the mission was over. Chandrayaan-1 operated for 312 days as opposed to the intended two years; however the mission achieved most of its scientific objectives including detecting presence of Lunar water.
Official source
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