نتایج جستجو برای: lunar eclipse
تعداد نتایج: 16593 فیلتر نتایج به سال:
The Moon was thought to be anhydrous since the Apollo era1, but this view has been challenged by detections of water on the lunar surface2–4 and in volcanic rocks5–9 and regolith10. Part of this water is thought to have been brought through solarwind implantation2–4,7,10 and meteorite impacts2,3,7,11, long after the primary lunar crust formed from the cooling magma ocean12,13. Here we show that...
Natural phenomena are unsystematic events in the physical view, and then created by humans. can occur anywhere anytime, sometimes even without being predicted advance. Every phenomenon that exists be beautiful, but it also dangerous, known as natural disasters. In Indonesia, there several have a negative impact on humans such as: volcanic eruptions, tsunamis, flash floods, tornadoes so on. This...
Measurements of atmospheric temperature profiles in the troposphere and lower stratosphere were made over Thumba Equatorial Rocket Launching Station (TERLS) (8.5 N, 76.9 E) during a partial solar eclipse (22 July 2009) and an annular solar eclipse (15 January 2010). It was observed that during the partial solar eclipse, the temperature decreased by 2–3 C in the vicinity of the tropopause and in...
Lunar samples are not readily available for In-Situ Resource Utilization (ISRU) studies, necessary for preparations for a return to the Moon with landers, robots, and astronauts. Lunar soil simulants have been produced as substitutes for the real thing; BUT how good are they? JSC-1 and 1A were produced only to approximate the geotechnical properties of lunar soil, with its natural glassy compon...
Background: Osteoporosis is one of the most common problems in the women, especially after menopause and at the old age. Bone densitometry of vertebrae of lumbar region and femoral neck is a non invasive and precise method for evaluation of bone mass density (BMD) and determination of fracture risk. Materials and Method: from different districts of Ahvaz city, more than 300 healthy men and wo...
Low estimated lunar volatile contents, compared with Earth, are a fundamental observation for Earth-Moon system formation and lunar evolution. Here we present zinc isotope and abundance data for lunar crustal rocks to constrain the abundance of volatiles during the final stages of lunar differentiation. We find that ferroan anorthosites are isotopically heterogeneous, with some samples exhibiti...
the chronobiology of the acute myocardial infarction (ami) is an interesting matter for recognition of the biological mechanism that might trigger ami. the present study was aimed to investigate the circadian, seasonal and circannual variation of the ami occurrence with solar, lunar, and christian months. a retrospective study of 1174 cases with diagnosis of ami was conducted. all cases include...
lunar and mars landing is a crucial part of any exploration mission. its importance is manifested by the considerable interest in the past couple of decades. solution of lunar descent can be either numerical or analytical. numerical solutions are iterative and computationally demanding and some of them might not be suitable for on-board implementation. on the other hand, analytical solutions ar...
O. Gruber B. J. Hargrave J. McAffer P. Rapicault T. Watson From its inception Eclipse was mainly designed to be a tooling platform, but with Version 3.0, Eclipse is now evolving toward a Rich Client Platform (RCP). This change, driven by the open-source community, brought a whole set of new requirements and challenges for the Eclipse platform, such as dynamic plug-in management, services, secur...
Introduction: One of many unknowns prior to the Apollo landings concerned the possibility of life, its remains, or its organic precursors on the surface of the Moon. While the existence of lunar organisms was considered highly unlikely, a program of biological quarantine and testing for the astronauts, the Apollo Command Modules, and the lunar rock and soil samples , was instituted in the Lunar...
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