Regolith is the unconsolidated, heterogeneous layer of fragmented mineral and rock material that overlies coherent bedrock on planetary surfaces, including Earth, the Moon, Mars, asteroids, and other solid bodies. As a substance, it comprises varying proportions of rock fragments, mineral grains, dust, ice, and, on some planets, secondary alteration products such as clays or salts. Regolith forms primarily through mechanical and chemical weathering, impact comminution, and volcanic or sedimentary processes, and its physical properties—such as grain size distribution, porosity, cohesion, and volatile content—critically influence surface-atmosphere interactions, geotechnical behavior, resource potential, and the performance of in situ exploration and construction activities.
Lunar samples serve as a critical link between orbital remote sensing and ground-truth measurements. Previous sample-return missions—Apollo, Luna, and Chang'e-5—have collectively brought back approximately 383 kilograms of ...
Space Exploration
Nov 25, 2025
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Most people interested in space exploration already know lunar dust is an absolute nightmare to deal with. We've already reported on numerous potential methods for dealing with it, from 3D printing landing pads so we don't ...
Planetary Sciences
Nov 17, 2025
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A joint research team from the Institute of Geochemistry of the Chinese Academy of Sciences (IGCAS) and Shandong University has for the first time identified crystalline hematite (α-Fe2O3) and maghemite (γ-Fe2O3) formed by ...
Planetary Sciences
Nov 14, 2025
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Work continues on designs for robots that can help assist the first human explorers on the moon in over half a century. One of the most important aspects of that future trip will be utilizing the resources available on the ...
Planetary Sciences
Nov 11, 2025
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The abundance, distribution, and origin of lunar surface water has recently drawn significant scientific interest, owing to its critical role in future space exploration.
Space Exploration
Nov 7, 2025
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Dust brought back to Earth by China's Chang'e-6 mission contains rare meteorite relics that could change our understanding of sources of water and other life-essential ingredients in our solar system.
Did life really exist on Mars after all? Unfortunately, there is no conclusive evidence for this yet. Nevertheless, it would seem that some form of life was the driving force behind the mysterious Martian dune gullies. Earth ...
Astrobiology
Oct 14, 2025
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The Rosalind Franklin mission's chance of finding evidence of past life on Mars has been boosted by two studies that show that the rover won't have to travel far to find materials potentially laden with organic molecules. ...
Astrobiology
Sep 11, 2025
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50
3D printing is going to be a critical technology in space exploration, both for its ability to create almost any object, but also because it can utilize in-situ resources, at least in part. However, the more of those space ...
Space Exploration
Aug 11, 2025
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NASA's Mars 2020 rover is continuing to explore a boundary visible from orbit dividing bright, fractured outcrop from darker, smoother regolith (also known as a contact).
Planetary Sciences
Aug 7, 2025
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