Revision summary
Chandrayaan-3 aimed to prove soft landing after Chandrayaan-2’s lander failure. It aimed to run the Pragyan rover and send surface data. Science targeted south-polar soil, heat, seismicity, and plasma. SHAPE on the propulsion module added Earth observation from lunar orbit. Success on 23 August 2023 made India first at that high southern landing latitude.
Model answer
Introduction
Chandrayaan-3 is ISRO’s 2023 lunar mission that achieved a soft landing near the Moon’s south pole on 23 August 2023. It was designed after Chandrayaan-2’s lander failure. The key objectives are technological demonstration first, then in-situ science from a high-latitude site.
Body
Key objectives
- Demonstrate a safe and soft landing on the lunar surface — the capability Chandrayaan-2’s Vikram did not complete in 2019.
- Demonstrate rover operations: the Pragyan rover was to roam, image, and send data from the landing site.
- Conduct in-situ scientific experiments on the surface and in the near-surface environment, especially near the south pole where ice and thermal extremes are of interest.
- Prove an end-to-end Indian landing-and-roving stack (propulsion module, lander Vikram, rover Pragyan) for later lunar and planetary missions.
Science payloads in that objective
- Lander instruments (ChaSTE thermal probe, ILSA seismometer, Langmuir probe) measure temperature, quakes, and plasma.
- Rover instruments (LIBS and APXS) estimate elemental composition of the soil.
- The propulsion module’s SHAPE experiment observed Earth from lunar orbit as a bonus spectroscopy goal.
The programme sits under the Indian Lunar Exploration / Chandrayaan series led by ISRO, with landing at about 69 degrees south, a first for any agency at that high southern latitude.
Flow diagram
flowchart TD C2[Chandrayaan-2 lander gap] --> C3[Chandrayaan-3] C3 --> L[Soft landing Vikram] C3 --> R[Rover Pragyan] C3 --> S[In-situ south pole science] L --> O[ISRO lunar capability] R --> O S --> O
Conclusion
Chandrayaan-3’s key objectives were soft landing, rover mobility, and polar in-situ science after the Chandrayaan-2 setback. Meeting them made India the first to soft-land near the lunar south pole and the fourth country to land softly on the Moon.
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Next question in the 2023 paper (Q8). View answer →
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Was Chandrayaan-3 meant to find water ice by drilling?
No. It was a landing-and-rover demo with surface instruments. Ice mapping remains more an orbiter and future-mission task.
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Did it have an orbiter like Chandrayaan-2?
No separate science orbiter. A propulsion module carried the lander-rover and ran SHAPE, while Chandrayaan-2’s orbiter still flies.
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