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USRA is an independent, nonprofit research corporation where the combined efforts of in-house talent and university-based expertise merge to advance space science and technology.USRA was founded in 19...
The science and technology are remarked by its continuous evolution, renovation and improvement, which contribute for the progress. They depend on talented and dedicated professionals, able to make ...
DURHAM, N.H. –- Crewed missions to Mars remain an essential goal for NASA, but scientists are only now beginning to understand and characterize the radiation hazards that could make such ventures risk...
太阳瞬变爆发活动(日冕物质抛射CME等)及其伴随的行星际激波具有强烈的空间天气效应,因此预报它们传播到地球轨道的时间是空间天气预报的一个重要组成部分。近期,中国科学院国家空间科学中心空间天气学国家重点实验室赵新华副研究员和冯学尚研究员自主开发出了到达时间预报的第二代激波传播模型(SPM2),该模型基于爆炸波传播解析,使用扰动初始时刻的观测参数(初始激波速度、背景太阳风速度等)作为输入,能对相应行星...
On Aug. 15, with its successful first season behind it, the Dark Energy Survey (DES) collaboration began its second year of mapping the southern sky in unprecedented detail. Using the Dark Energy Came...
In the year 1992, the Asia-Pacific Workshop on Multilateral Cooperation in Space Technology and Applications (AP-MCSTA) was held in Beijing. The participants from 16 Asia-Pacific countries unanimously...
The European Space Agency (ESA) is Europe's gateway to space. Its mission is to shape the development of Europe's space capability and ensure that investment in space continues to deliver benefits to ...
The evolution of two-dimensional (2D) electron phase-space holes (electron holes) has been previously investigated with electrostatic Particle-in-Cell (PIC) simulations, which neglect ion dynamics. Th...
金秋十月,第二届中美空间监测预警技术交流国际会议(US-China Space Surveillance Technical Interchange)在北京举行。2011年11月17日、18日两天,近百位中美两国空间碎片监测预警领域的专家学者聚集在国家天文台多功能厅,通过专题报告和学术讨论等形式,就该领域的技术问题进行广泛而深入地学习与交流,探讨技术创新途径,共享科技发展成果。这次会议得到国家自然...
Space-based gravitational-wave detectors, such as LISA or a similar ESA-led mission, will offer unique opportunities to test general relativity. We study the bounds that space-based detectors could pl...
We have used the Spitzer Space Telescope Infrared Spectrograph (IRS) to observe the 5-37 micron thermal emission of comet 73P/Schwassmann-Wachmann 3 (SW3), components B and C. We obtained low spectral...
This paper describes the space weather effects of a major CME which was accompanied by extremely violent events on the Sun.The signatures of the event in the interplanetary medium (IPM) sensed by Ooty...
We discuss the effects of certain dynamic features of space environment in the heliosphere, the geo-magnetosphere, and the earth’s atmosphere. In particular, transient perturbations in solar wind plas...
During its first year of operations, NASA's Fermi Gamma Ray Space Telescope mapped the extreme sky with unprecedented resolution and sensitivity. It captured more than one thousand discrete sources of...
Anyone who has watched videos of the Apollo astronauts moving across the surface of the moon has noticed the unusual loping gait they sometimes adopted and their slow, almost graceful, movements. Now ...

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