Detection of Intact Lava Tubes at Marius Hills on the Moon by SELENE (Kaguya) Lunar Radar Sounder

Kaku, Tetsuya; Haruyama, Junichi; Miyake, W.; Kumamoto, A.; Ishiyama, Ken; Nishibori, Toshiyuki; Yamamoto, Keiko; Crites, S. T.; Michikami, Tatsuhiro; Yokota, Yasuhiro; Sood, Rohan; Melosh, H. J.; Chappaz, Loïc; Howell, Kathleen C.

doi:10.1002/2017gl074998

Cited by 76 publications

(53 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Even in space, void structures might be ubiquitous. For example, intact lava tubes have recently been found on the Moon 1 . Moreover, pit structures observed on the surface of comets might be caused by the collapse of internal voids 2 .…”

Section: Introductionmentioning

confidence: 99%

Void structure stability in wet granular matter and its application to crab burrows and cometary pits

Shinoda

Fujiwara

Niiya

et al. 2018

Sci Rep

View full text Add to dashboard Cite

Cohesive granular matter can support stable void structures, which can universally be found in various scenes from everyday lives to space. To quantitatively characterize the stability and strength of a void structure in cohesive granular matter, we perform a simple tunnel-compression experiment with wet granular matter. In the experiment, a horizontal tunnel in a wet granular layer is vertically compressed with a slow compression rate. The experimental result suggests that the tunnel deformation can be classified into the following three types: (i) shrink, (ii) shrink with collapse, and (iii) subsidence by collapse. Using the experimental result, we estimate the stable limit of various void structures in a cohesive granular layer from crab burrows on a sandy beach to the pits observed on cometary surfaces.

show abstract

Section: Introductionmentioning

confidence: 99%

Void structure stability in wet granular matter and its application to crab burrows and cometary pits

Shinoda

Fujiwara

Niiya

et al. 2018

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Not only are the materials in extraterrestrial conditions likely to be different than rocks in the Earth, the stresses under which those materials exist will also be very different than on Earth: gravity, rotational forces, temperature regime (including fluctuations and the timing of those fluctuations), photochemical and radiation effects, shock waves from impacts and in situ quakes, and tidal stresses. Lava tubes on the Moon are reported to be far bigger than any known on the Earth (Kaku et al, 2017), most likely as a result of the lower gravitational stresses. Otherwise, the Moon is a very Earth-like body in terms of composition, solar loading (albeit on a different time scale given the lunar day), and orbital characteristics.…”

Section: Mylroiementioning

confidence: 90%

“…C) Halite is also a rheid, and caves can squeeze shut in a matter of decades. years old (Kaku, et al, 2017). On the scale of most major geologic processes, such as plate tectonics and evolution, caves can span the duration of those events.…”

Section: Mylroiementioning

confidence: 99%

Caves in space

Mylroie¹

2019

JCKS

View full text Add to dashboard Cite

The definition of a cave has centered on its accessibility to humans, an understandable, but arbitrary, approach. Caves without humanly accessible entrances are still caves. As we reach out to the moons and planets of our solar system, and eventually the stars, we need to evaluate caves as possible reservoirs of extraterrestrial life and as potential human habitats. If humanly passable caves are a subset of all caves, then caves can exist from the tiny, subatomic dimension up to and including the entire universe. They can form and exist for only milliseconds or for billions of years. What's more, they can form in almost any solid material, and perhaps even in liquids, and contain within them vacuum, gases, liquids or solids. Caves can be initially classified as natural and artificial. Natural caves form either by constructive processes that build a boundary, which contains the void, or by destructional processes that remove or shift material to create a void, where none existed before. Caves are defined by answering five questions: 1. How did the void form? 2. How big is it? 3. How long has it lasted? 4. What does it contain? 5. How does it connect to exterior space? As humans move from a geocentric view of natural features to a more universal view, we need to see caves across a broader continuum of possibilities.

show abstract

“…The discovery of lunar lava tube skylights/lunar pits has been a key finding in the last decade, enabled by high spatial resolution views of mare basalts by multiple missions (e.g., [180][181][182]). Several skylights have now been detected, including occurrences in the Mare Tranquillitatis and Marius Hills region (Figure 9).…”

Section: Lava Tube Skylights-accessibility Science and Resource Potementioning

confidence: 99%

The New Moon: Major Advances in Lunar Science Enabled by Compositional Remote Sensing from Recent Missions

Dhingra

2018

Geosciences

View full text Add to dashboard Cite

Volatile-bearing lunar surface and interior, giant magmatic-intrusion-laden near and far side, globally distributed layer of purest anorthosite (PAN) and discovery of Mg-Spinel anorthosite, a new rock type, represent just a sample of the brand new perspectives gained in lunar science in the last decade. An armada of missions sent by multiple nations and sophisticated analyses of the precious lunar samples have led to rapid evolution in the understanding of the Moon, leading to major new findings, including evidence for water in the lunar interior. Fundamental insights have been obtained about impact cratering, the crystallization of the lunar magma ocean and conditions during the origin of the Moon. The implications of this understanding go beyond the Moon and are therefore of key importance in solar system science. These new views of the Moon have challenged the previous understanding in multiple ways and are setting a new paradigm for lunar exploration in the coming decade both for science and resource exploration. Missions from India, China, Japan, South Korea, Russia and several private ventures promise continued exploration of the Moon in the coming years, which will further enrich the understanding of our closest neighbor. The Moon remains a key scientific destination, an active testbed for in-situ resource utilization (ISRU) activities, an outpost to study the universe and a future spaceport for supporting planetary missions.

show abstract

Detection of Intact Lava Tubes at Marius Hills on the Moon by SELENE (Kaguya) Lunar Radar Sounder

Cited by 76 publications

References 25 publications

Void structure stability in wet granular matter and its application to crab burrows and cometary pits

Void structure stability in wet granular matter and its application to crab burrows and cometary pits

Caves in space

The New Moon: Major Advances in Lunar Science Enabled by Compositional Remote Sensing from Recent Missions

Contact Info

Product

Resources

About