2019

The Moon's Second Visitor from India

India launched Chandrayaan-2, a complex mission to softly land a rover on the lunar south pole, a feat previously achieved only by the Soviet Union, China, and the United States.

July 22Original articlein the voice of WONDER
Chandrayaan-2
Chandrayaan-2

A Geosynchronous Satellite Launch Vehicle Mark III lifted off from Sriharikota at 2:43 PM IST, carrying 3,877 kilograms of carefully engineered ambition. The Chandrayaan-2 stack housed an orbiter, the Vikram lander, and the Pragyan rover. Its target was a highland near the moon’s south pole, a region no nation had yet touched. The mission’s objective was not merely to arrive but to conduct detailed mineralogical and elemental mapping, searching for water ice in permanently shadowed craters.

The mission represented a significant technological leap for the Indian Space Research Organisation. Chandrayaan-1, launched in 2008, was an orbiter that included an impact probe. Chandrayaan-2 aimed for a controlled, soft landing. Success would make India the fourth country to achieve this. The orbiter, designed for a one-year mission, carried eight scientific instruments. The lander and rover, named for Vikram Sarabhai and the Sanskrit word for wisdom, were to operate for one lunar day, about 14 Earth days.

Public narrative often focuses on the lander’s subsequent hard landing on September 6, which silenced Vikram and Pragyan. This frames the mission as a failure. The orbiter, however, achieved a flawless insertion and continues to function, its high-resolution camera returning global data that has been offered to the international scientific community. It has already mapped potential water ice and detected argon-40 in the lunar exosphere.

The lasting impact is twofold. Technologically, the mission demonstrated and validated India’s capacity for complex deep-space navigation, communication, and orbital operations. Scientifically, the orbiter’s extended service has provided a steady stream of data, contributing to the global understanding of the lunar surface and environment. Chandrayaan-2’s partial success laid the direct and necessary groundwork for Chandrayaan-3, which would successfully land in 2023.