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ISRO's Chandrayaan-3 Reveals 6-9 cm 'Cake-like' Lunar Regolith Layer with 750-1600 kg/m³ Density, Aiding Future Habitat Site Selection

Target:UPSC GS-IIIMPSCSSC GATeachingPrelims HighMains MediumStatic GK Link
19 May 2026
~2 min
Source: Indian Express
Key Data:6 to 9 cm750 to 1,600 kg/m³273 to 355 Kelvin50 cm57 minutes
Bodies:ISROPRL
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What This Article Covers

1.A first-of-its-kind thermal and density profile of lunar regolith was created using data from the Chandrayaan-3 Vikram lander's hop and redeployed ChaSTE instrument.

2.The study found a distinct two-layer structure within the top few centimeters, with a porous upper layer 6-9 cm thick, crucial for future lunar habitat construction and scientific base site selection.

3.The data, collected during a unique lunar twilight period of 57 minutes, shows high spatial variability in temperature (273-355 K) and geotechnical properties within just 50 cm of the landing site.

The Big Picture
Prelims · HighMains · Medium

A landmark ISRO-PRL study using Chandrayaan-3's Vikram lander data reveals a multi-layered 'cake-like' lunar regolith structure at Shiv Shakti Point. This discovery of a 6-9 cm porous top layer with varying density (750-1600 kg/m³) and temperature profiles is critical for selecting future lunar base sites and understanding water-ice storage in the Moon's subsurface.

Exam Lens

Quick Exam Facts From News

Landing DateAugust 23, 2023
Hop Distance50 cm
Hop DateSeptember 2, 2023
Top Layer Thickness6 to 9 cm
Density Range750 to 1,600 kg/m³
Temperature Range273 to 355 Kelvin
Profiling Duration57 minutes
Lander Site NameShiv Shakti point

1-Minute Revision

  • ›Landing Date: August 23, 2023
  • ›Hop Distance: 50 cm
  • ›Target this Data: 6 to 9 cm (thickness of the porous lunar regolith layer)
  • ›Target this Nodal Body: Physical Research Laboratory (PRL) and Indian Space Research Organisation (ISRO)
  • ›Target this Mission: Chandrayaan-3's Vikram lander hop on September 2, 2023

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Practice exam-style questions, track your score, and strengthen your recall.

Q1Static LinkageEasy

The study revealing the 'cake-like' lunar regolith structure was led by scientists at which Indian laboratory?

Q2Statement-basedHard

Consider the following statements regarding the Chandrayaan-3 findings:

1. The Vikram lander performed a hop to a new site located 50 cm away from Shiv Shakti point.

2. The Instrument for Lunar Seismic Activity (ILSA) was redeployed after the hop to measure regolith temperature.

3. The study concluded the lunar surface has a uniform single-layer structure of regolith.

Which of the statements given above is/are correct?

Q3Data-centricMedium

According to the study, what was the bulk density range of the lunar regolith from the top surface to about 6.5-cm depth?

Q4Application/ImpactMedium

What is the primary significance of discovering the multi-layered 'cake-like' structure of lunar regolith, as per the ISRO statement?

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