By Laurence Tognetti, MSc
Could 27, 2025
Raman spectroscopy makes use of scattered to determine a substance’s chemical substances and is likely one of the most generally used scientific strategies in area exploration. It’s used for lunar exploration to determine volcanic minerals, water ice, and area weathering, and has been restricted to acquiring knowledge from lunar orbiters. However how can Raman spectroscopy be performed on the lunar floor to assist us higher perceive our nearest celestial neighbor? That is what a recent study introduced on the 56th Lunar and Planetary Science Convention hopes to deal with as a group of NASA and tutorial researchers mentioned the Raman Dice Rover (R3R), which might be delivered to the lunar floor by way of the non-public area firm, Astrobotic.
For the research, the researchers mentioned the event of the Raman Dice Rover with laboratory experiments and the way it can contribute to future Artemis missions to the lunar floor. These experiments concerned testing three optical configurations for amassing knowledge, together with amassing knowledge utilizing a spectrometer and optical fiber by way of direct contact from the laser beam to the pattern and oblique contact utilizing a mirror, and utilizing scattered mild mixed with a long-distance microscope to gather the information. The researchers notice how the Raman Dice Rover’s decision has demonstrated an approximate distance of 30 meters (98 ft) in comparison with NASA Perseverance rover’s SuperCam that’s restricted to a distance of seven meters (20 ft).
The research notes, “The R3R [Raman Cube Rover] telescope and relay mild assortment system holds promise to increase the standoff distance for measurements supporting Artemis science missions by amassing stimulated Raman back-scattered mild near the pattern goal with improved étendue [extent], and by controlling the divergence of the returned collimated mild beam to the stationary lander.”
As famous, Raman spectroscopy is utilized in area exploration for figuring out a substance’s chemical substances. This contains water and water ice, whose identification and extraction might be essential for future crewed missions to the lunar floor in a course of known as in-situ useful resource utilization, or “dwelling off the land” with out counting on fixed resupply from Earth. With future Artemis touchdown websites focusing on the lunar south pole to take advantage of the area’s water ice content material inside the completely shadowed areas (PSRs), Raman spectroscopy may show a useful approach for the crew survival and mission success, as water ice can be utilized for ingesting, bathing, hydration, gas, and even creating oxygen by way of electrolysis.
An instance of Raman spectroscopy getting used on an energetic area mission is NASA’s Perseverance rover, which makes use of its SHERLOC (Scanning Habitable Environments with Raman & Luminescence for Organics and Chemicals) instrument to research Martian rocks and regolith (typically mistakenly known as soil) for potential indicators of current or historic life. Together with the Moon and Mars, Raman spectroscopy has been proposed for finding out and analyzing the surfaces and atmospheres of Jupiter’s Galilean moons and is at present getting used to review the atmospheres of exoplanets for biosignatures. A number of the advantages of spectroscopy embody its non-invasive attributes whereas nonetheless amassing essential scientific knowledge and can be utilized for in-situ evaluation, as depicted with the NASA Perseverance rover and the proposed Raman Dice Rover for the Moon.
As humanity continues its growth into out area with the participation of governments and personal firms, the Raman Dice Rover may supply an intriguing alternative to show scientists concerning the lunar floor whereas figuring out pockets of water ice that may very well be used for human missions with the upcoming Artemis program.
How will the Raman Dice Rover assist improve Raman spectroscopy on the lunar floor within the coming years and many years? Solely time will inform, and this is the reason we science!
As at all times, hold doing science & hold wanting up!
