Chandrayaan-2 — India's second lunar mission by ISRO

Spacecraft and main components

Chandrayaan-2 comprised three primary segments: the orbiter, the lander (named Vikram) and the rover (named Pragyan). The orbiter was designed to operate from lunar orbit and carry remote-sensing instruments for mapping, mineralogical studies and exosphere measurements. The lander carried instruments to characterise the immediate landing site and to deploy the rover. The rover was a small, solar-powered vehicle intended to move short distances and perform in situ analyses.

Mission timeline and outcome

The mission launched successfully on 22 July 2019 and the spacecraft was delivered to lunar transfer trajectory by the rocket. After several maneuvers the spacecraft entered lunar orbit and preparations were made for the separation and powered descent of the lander. During the final descent in early September 2019, communication was lost when the lander was near the surface. Investigations indicated loss of control during the last phase and the lander did not achieve a nominal soft landing. The orbiter, however, continued to function and carried out scientific observations from orbit for an extended period.

Scientific objectives and instruments

The mission aimed to expand knowledge of the Moon’s geology, mineralogy, surface chemistry and exosphere, with particular emphasis on the south polar region. Instruments on the orbiter and lander included spectrometers, a synthetic aperture radar, cameras and other sensors to detect surface composition, elemental abundances and water or hydroxyl signatures. Data returned by the orbiter have contributed to regional mapping and to follow-up studies of areas of interest identified by earlier missions such as Chandrayaan-1.

Historical context and significance

A successful soft landing near the lunar south pole would have made India the fourth country to achieve a soft lunar landing after the agencies of the United States, the Soviet Union and China. Even though the lander did not complete its final descent as planned, Chandrayaan-2 demonstrated complex mission capabilities: a large cryogenic-class launcher, precision orbit insertion, and operation of a multi-module lunar spacecraft. The mission expanded national and international scientific datasets and informed subsequent mission designs.

Legacy, follow-up and notable facts

The partial success of Chandrayaan-2—especially the continued operation of the orbiter—provided valuable reconnaissance and technical lessons. These lessons were applied to later Indian lunar efforts. The mission highlighted both the difficulties of powered soft landings and the value of orbital remote sensing as a resilient path to scientific return. For further overviews and technical summaries see mission pages from ISRO and related analyses (Moon mission context, south polar objectives).

• Primary goal: soft landing and surface exploration near the south pole (south pole).
• Launch vehicle: Geosynchronous Satellite Launch Vehicle Mark III (GSLV Mk III).
• Notable outcome: functional orbiter delivering scientific data while lander failed during descent.

Chandrayaan-2 remains an important case study in contemporary lunar exploration, illustrating how orbital science and iterative engineering contribute to long-term exploration goals.