Lunar Ice Discovery: Key Facts for SSC & UPSC
The Chandrayaan-2 orbiter has made a historic lunar ice discovery, detecting deep subsurface water ice in ultra-cold craters. This breakthrough is crucial for future astronaut missions and space exploration.
The Chandrayaan-2 orbiter has achieved a massive lunar ice discovery, detecting deep subsurface water ice in ultra-cold craters. This is a historic milestone in deep-space exploration.
Introduction & Concept Overview
The Chandrayaan-2 spacecraft has made a groundbreaking discovery of lunar ice near the Moon’s highly contested south pole. Scientists at the Physical Research Laboratory (PRL) in Ahmedabad have analyzed fresh data beamed back by the spacecraft and found definitive evidence of subsurface water ice trapped inside ultra-cold, doubly shadowed craters.
Complete List of Lunar Ice Craters
| Crater Name | Size (km) | Location |
|---|---|---|
| Faustini Basin | Larger Basin | |
| Unnamed Crater | 1.1 | Inside Faustini Basin |
Historical Timeline & Evolution
The Chandrayaan-2 spacecraft has spent nearly seven years quietly mapping the moon from orbit. This discovery is made possible by the advanced ‘Dual Frequency Synthetic Aperture Radar’ (DFSAR), an ultra-sophisticated microwave imaging instrument operating in L-band and S-band frequencies.
Key Facts & Figures to Memorize
- Water Ice: Abundant local supply of frozen water alters the economic feasibility of deep-space exploration.
- Lunar Ice Craters: Unique physical footprint known as a lobate-rim morphology.
- DFSAR Instrument: Emits radar signals that can penetrate a few meters into the lunar soil (regolith).
- Cryogenic Separation and Storage: Clean, high-energy rocket propellant to refuel spacecraft returning to Earth or traveling to Mars.
Memory Tricks & Mnemonics
To remember the key facts, use the acronym LUNAR:
- L: Lobate-rim morphology
- U: Ultra-cold craters
- N: Near the Moon’s south pole
- A: Abundant local supply of frozen water
- R: Radar signals penetrate the lunar soil
Frequently Asked in Exams
- What is the significance of the Chandrayaan-2 lunar ice discovery?
- How does the DFSAR instrument work?
- What are the potential applications of lunar ice for future astronaut missions?
Frequently Asked Questions
Q: What is the significance of the Chandrayaan-2 lunar ice discovery?
A: The discovery of lunar ice is crucial for future astronaut missions and space exploration. It provides a local supply of frozen water that can be used for life support, drinking water, and agricultural hydration systems.
Q: How does the DFSAR instrument work?
A: The DFSAR instrument emits radar signals that can penetrate a few meters into the lunar soil (regolith). It uses a combination of Circular Polarization Ratio (CPR) and Degree of Polarization (DOP) to eliminate false signals and detect subsurface water ice.
Q: What are the potential applications of lunar ice for future astronaut missions?
A: The lunar ice can be used for immediate life support, drinking water, and agricultural hydration systems. It can also be used for electrochemical water splitting to create breathable air and for cryogenic separation and storage to produce clean, high-energy rocket propellant.
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