Lunar impact craters are important for studying lunar surface morphology because they are the most typical morphological units of the Moon. Impact crater descriptive indices can be used to describe morphological features and thus provide direct evidence for both the current state and evolution history of the Moon. Current description methods for lunar impact craters are predominantly qualitativ...

Each year the Moon is bombarded by about 10 kg of interplanetary micrometeoroids of cometary and asteroidal origin. Most of these projectiles range from 10 nm to about 1 mm in size and impact the Moon at 10–72 km/s speed. They excavate lunar soil about 1000 times their own mass. These impacts leave a crater record on the surface from which the micrometeoroid size distribution has been deciphere...

Korea’s first lunar mission, the Korea Pathfinder Lunar Orbiter (KPLO), aims to launch in mid-2022 via Space-X Falcon-9 vehicle. For successful flight operation of KPLO, Aerospace Research Institute (KARI) has designed and developed Flight Dynamics Subsystem (FDS). FDS is one subsystems KPLO Deep-Space Ground System (KDGS), which responsible for overall dynamics-related operation. currently suc...

Foraging animals have several tools for managing the risk of predation, and the foraging games between them and their predators. Among these, time allocation is foremost, followed by vigilance and apprehension. Together, their use influences a forager's time allocation and giving-up density (GUD) in depletable resource patches. We examined Allenby's gerbils (Gerbilus andersoni allenbyi) exploit...

Introduction: Since 1999, the lunar sample collection has been supplemented with about 50 meteorites from the Moon. Many of these stones are paired, and the total number of different lunar meteorites in the present collection is 37. Of these 37, five are lunar mare basalts, which represents ~14% of the lunar meteorite collection. Considering that the maria represent ~17% of the lunar surface, t...

published in: Lunar and Planetary Science XL, CD-ROM, Lunar and Planetary Institute, Houston (2009). 1073.pdf 40th Lunar and Planetary Science Conference (2009)

For the past 40 years, the Moon has been described as nearly devoid of indigenous water; however, evidence for water both on the lunar surface and within the lunar interior have recently emerged, calling into question this long-standing lunar dogma. In the present study, hydroxyl (as well as fluoride and chloride) was analyzed by secondary ion mass spectrometry in apatite [Ca(5)(PO(4))(3)(F,Cl,...

This paper shows how the exposure of the Moon to the Earth’s plasmasheet is subject to decadal variations due to lunar precession. The latter is a key property of the Moon’s apparent orbit around the Earth – the nodes of that orbit precess around the ecliptic, completing one revolution every 18.6 years. This precession is responsible for a number of astronomical phenomena, e.g. the year to year...

On 14 September 2007, the first Japanese large-scaled lunar explorer “Kaguya” (SELENE), developed by JAXA (Japan Aerospace and Exploration Agency) was launched. Kaguya successfully reached moon in October 2007, and started nominal operation from 21 December 2007, As of the end of April 2008, Kaguya is conducting lunar surface observation from lunar polar orbit. Kaguya will acquire large amount ...

The paper researched and presented a virtual simulation system based on a full-digital lunar terrain, integrated with kinematics and dynamics module as well as autonomous navigation simulation module. The system simulation models are established. Enabling technologies such as digital lunar surface module, kinematics and dynamics simulation, Autonomous navigation are investigated. A prototype sy...