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Soil Lysimeter Excavation for Coupled Hydrological, Geochemical, and Microbiological Investigations

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Published on: September 11, 2016

The LCROSS cratering experiment.

Peter H Schultz¹, Brendan Hermalyn, Anthony Colaprete

¹Department of Geological Sciences, Brown University, Providence, RI 02912, USA. peter_schultz@brown.edu

Science (New York, N.Y.)

|October 23, 2010

Summary

This summary is machine-generated.

The Lunar Crater Observation and Sensing Satellite (LCROSS) mission revealed a low-density lunar surface. Instruments detected hydroxyl (OH) and other volatiles in the impact ejecta, indicating potential water ice.

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Area of Science:

Lunar science
Planetary geology
Astrobiology

Background:

Understanding the composition of the Moon's surface is crucial for future exploration and resource utilization.
Previous missions have provided limited data on the physical properties and volatile content of lunar regolith.

Purpose of the Study:

To analyze the composition and physical characteristics of the lunar surface at the impact site.
To detect the presence of volatile compounds, such as water, in the lunar ejecta.

Main Methods:

The Lunar Crater Observation and Sensing Satellite (LCROSS) mission utilized a Shepherding Spacecraft to observe the impact of its Centaur upper stage.
Instruments onboard LCROSS captured visible and mid-infrared data of the impact flash and ejecta plume.
Spectroscopic analysis was performed on the returning ejecta to identify chemical species.

Main Results:

The impact created a 25- to-30-meter crater, with observations indicating a low-density surface layer.
Visible and mid-infrared signatures suggested a faint impact flash and thermal signature.
Spectra revealed the presence of hydroxyl (OH) and other volatile species within the sunlit ejecta.

Conclusions:

The LCROSS impact provided direct evidence of a low-density lunar surface layer.
The detection of hydroxyl and other volatiles in the ejecta supports the hypothesis of water ice on the Moon.
The study enhances our understanding of lunar surface composition and the potential for resources.