理学 >>> 天文学 >>> 天体力学 天体物理学 天体化学 天体测量学 射电天文学 空间天文学 天体演化学 星系与宇宙学 恒星与银河系 太阳与太阳系 天体生物学 天文学其他学科
搜索结果: 16-30 共查到天文学 Solar System相关记录31条 . 查询时间(0.101 秒)
We explore the microwave anisotropies at large angular scales produced by the emission from cold and large dust grains, expected to exist in the outer parts of the Solar System, using a simple toy mod...
The geology of the Moon and the dynamics of the early solar system are much clearer now thanks to three new studies of the lunar surface by NASA's Lunar Reconnaissance Orbiter (LRO). As well as provid...
The solar system is up two million years older than previously thought, according to a pair of researchers in the US. Their work, which is based on dating a meteorite found nestled in the Sahara deser...
Lead-lead (Pb-Pb) dating is among the most widely used radiometric dating techniques to determine the age of really old things, such as the age of the Earth or the Solar System. However, recent advanc...
The first solar system energetic particle maps show an unexpected landmark occurring at the outer edge of the solar wind bubble surrounding the solar system. Scientists will publish these maps, based ...
A "bright narrow ribbon snaking its way through the sky" is just one of the puzzling features of the first all-sky maps of the edge of the solar system made by NASA’s Interstellar Boundary Explorer (I...
We use the corrections to the Newton-Einstein secular precessions of the longitudes of perihelia ϖ˙ of some planets (Mercury, Earth, Mars, Jupiter, Saturn) of the Solar System, phenomenologically...
Astronomers have been turning the world's most powerful telescopes toward Jupiter, the solar system's largest planet, ever since Australian amateur astronomer Anthony Wesley discovered a new dark mark...
Global Consequences of the Accretion of the Outer Solar System
Space ices containing water, carbon- and nitrogen-rich structures are important in certain chemical and radiation induced processes in Solar System dust systems. Up to now there are no detailed invest...
We observed micrometer-sized grains of wadsleyite, a high-pressure phase of (Mg,Fe)2SiO4, in the recovery products of a shock experiment. We infer these grains crystallized from shock-generated melt...
The motion in a field featured by a force function A/r + B/r3 (the Schwarzschild problem) constitutes a realistic model for the dynamics in the relativistic solar gravitational filed. A qualitative ...
March 2, 2007,Task Group on Organic Environments in the Solar System, National Research Council.The purpose of this report is to tell the story of carbon: to follow carbon through a variety of terrest...
16 December, 2006,The surprises began early on, with the second grain Brownlee worked on in his laboratory -- a calcium-aluminum inclusion, a rare material found in some meteorites. The stunning thing...
December 14, 2006,The preliminary examination of space dust brought back to Earth by NASA’s Stardust spacecraft has been completed. The results of the studies, which could help explain the origin of t...

中国研究生教育排行榜-

正在加载...

中国学术期刊排行榜-

正在加载...

世界大学科研机构排行榜-

正在加载...

中国大学排行榜-

正在加载...

人 物-

正在加载...

课 件-

正在加载...

视听资料-

正在加载...

研招资料 -

正在加载...

知识要闻-

正在加载...

国际动态-

正在加载...

会议中心-

正在加载...

学术指南-

正在加载...

学术站点-

正在加载...