360° UPSC Mains Analysis

Isro scientists detect possible subsurface ice near Moon’s south pole using Chandrayaan-2

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Ecology Impact

The discovery highlights the significance of Permanently Shadowed Regions (PSRs) as fragile abiotic ecosystems. These areas require strict adherence to 'Planetary Protection' protocols to prevent terrestrial biological contamination of pristine ice, which serves as a geological record of the early solar system.

Science & Tech Angle

The research utilizes Dual Frequency Synthetic Aperture Radar (DFSAR) on Chandrayaan-2, which employs L-band and S-band microwave frequencies to penetrate the lunar regolith. Detection is based on polarimetric signatures: Circular Polarisation Ratio (CPR) > 1 and Degree of Polarisation (DOP) < 0.13, which differentiate volume scattering of ice from surface scattering of rocks.

Sustainable Development

Alings with SDG 9 (Industry, Innovation, and Infrastructure) by advancing space-faring technology. The potential for In-Situ Resource Utilisation (ISRU) to produce water, oxygen, and rocket fuel on the Moon supports sustainable long-term exploration by reducing the resource burden and launch emissions from Earth.

International Frameworks

Outer Space Treaty (1967)
Provides the legal framework for the exploration of the Moon as the 'province of all mankind' and prohibits national appropriation of lunar territory or resources.
Artemis Accords (2020)
India signed these accords in June 2023, which establish principles for the sustainable extraction and utilization of space resources, such as lunar water ice for In-Situ Resource Utilisation (ISRU).

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