نتایج جستجو برای: lunar eclipse

تعداد نتایج: 16593  

2011
Eberhard Grün Mihaly Horanyi Zoltan Sternovsky

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...

2005
Benjamin Livshits

While many researchers have used Eclipse as a platform for developing software engineering and program analysis tools, Eclipse itself presents an excellent subject for analysis and study. Eclipse represents one of the biggest Java projects ever created. While surprisingly robust, Eclipse still suffers from serious bugs that lead to crashes and resource exhaustion. Eclipse is a collaborative dev...

2009
W. R. Orr

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

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2010
Francis M McCubbin Andrew Steele Erik H Hauri Hanna Nekvasil Shigeru Yamashita Russell J Hemley

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,...

2008
J. Terazono N. Asada H. Demura N. Hirata K. Saiki A. Iwasaki R. Oka T. Hayashi T. Suzuki H. Miyamoto J. Haruyama M. Ohtake T. Matsunaga

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 ...

2009
Bao Jinsong Hu Xiaofeng Wang Wei Yu Dili Jin Ye

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...

2016
Kai-tuo Wang Qing Tang Xue-min Cui Yan He Le-ping Liu

The environment on the lunar surface poses some difficult challenges to building long-term lunar bases; therefore, scientists and engineers have proposed the creation of habitats using lunar building materials. These materials must meet the following conditions: be resistant to severe lunar temperature cycles, be stable in a vacuum environment, have minimal water requirements, and be sourced fr...

2010
K. Nishiizumi M. W. Caffee

More than 130 lunar meteorites have been found in Antarc-tica and other arid regions throughout the world. Even though nearly half of all lunar meteorites are paired falls and the location from which they were launched is unknown, they sample a more extensive area of lunar crust than manned sample returns, thereby providing a vital record of lunar crust materials. To use lunar meteorites to exp...

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