نتایج جستجو برای: moon
تعداد نتایج: 9039 فیلتر نتایج به سال:
Current thinking about the Moon as a destination has revitalized interest in lunar astronomical observatories. Once seen by a large scientific community as a highly enabling site, the dramatic improvement in capabilities for free-space observatories prompts reevaluation of this interest. Whereas the lunar surface offers huge performance advantages for astronomy over terrestrial sites, free-spac...
We studied stress hormones and foraging of nocturnal Acomys cahirinus and diurnal A. russatus in field populations as well as in two field enclosures populated by both species and two field enclosures with individuals of A. russatus alone. When alone, A. russatus individuals become also nocturnally active. We asked whether nocturnally active A. russatus will respond to moon phase and whether th...
The algorithm proposed by Ha and Moon [2] is a countermeasure against power analysis. The Ha-Moon algorithm has two drawbacks in that it requires an inversion and has a right-to-left approach. Recently, Yen, Chen, Moon and Ha improved the algorithm by removing these drawbacks [7]. Their new algorithm is inversion-free, has a left-toright approach and employs a window method. They insisted that ...
Character and spatial distribution of OH/H2O on the surface of the Moon seen by M3 on Chandrayaan-1.
The search for water on the surface of the anhydrous Moon had remained an unfulfilled quest for 40 years. However, the Moon Mineralogy Mapper (M3) on Chandrayaan-1 has recently detected absorption features near 2.8 to 3.0 micrometers on the surface of the Moon. For silicate bodies, such features are typically attributed to hydroxyl- and/or water-bearing materials. On the Moon, the feature is se...
The Moon is Earth’s nearest neighbor and the only other planetary body that has been visited by human beings. It is believed to have formed through a collision between the young Earth and an impactor ~ 4500 million years ago. The geological history of the Moon seems to be intimately associated with that of our own Earth. Therefore, through lunar studies, we can also gain further understanding o...
Introduction: Billions of years of meteoroid bombardment have shaped the lunar surface, created and stirred the lunar regolith, and covered the moon with dust. Since the Apollo era, the particulate atmosphere and mobility of dust, have been recognized as both a hazard to human health and a challenge to equipment function and longevity. The NASA Constellation Program promises sustained human and...
Introduction. During the end stage of planet formation , terrestrial planets are expected to experience a number of giant impacts. Understanding how much of the planet's atmosphere is lost to space during such collisions is vital to be able to determine the origin and evolution of planetary atmospheres. Recently, geo-chemical observations [1, 2] and high angular momentum models for the Moon-for...
It was proved by Rubey that the number of fillings with zeros and ones of a given moon polyomino that do not contain a northeast chain of size k depends only on the set of columns of the polyomino, but not the shape of the polyomino. Rubey’s proof is an adaption of jeu de taquin and promotion for arbitrary fillings of moon polyominoes. In this paper we present a bijective proof for this result ...
Recent neutron spectrometer measurements by the Lunar Prospector Mission indicate the presence of unexpectedly high concentrations of hydrogen, possibly due to water ice, at the polar regions of the Moon. The objective of the conducted research was to analyze the solarwind-implanted hydrogen on the Moon in order to interpret the Lunar Prospector results. Previous researchers had created a heliu...
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