当多个CME相互碰撞时，它们的运行轨迹与强度都可能发生显著变化。这种合并还可能加速带电 粒子，改变磁场结构，使其对宇航员、卫星以及地面技术设施造成更严重威胁。"帕克"探测器的近距离 观察有助于科研人员更好地预测并应对这种空间环境效应。 太阳风是一种持续不断的带电粒子流，会穿越整个太阳系，对地球造成广泛影响。这些图像首次清 晰展示了太阳风从日冕释放后的演化过程，以及太阳磁场由北向南反转的关键边界，即"日球电流片"。 这些图像还首次以高分辨率捕捉到多个日冕物质抛射（CME）事件的相互碰撞过程。CME是太阳 喷发出的高速带电粒子团，是太空天气的主要驱动因素。"帕克"探测器显示，多个CME在空间中"叠 加"。 "帕克"探测器于2018年发射升空，任务是深入研究太阳外层大气——日冕。去年12月24日，它飞至 距离太阳表面约610万公里处，这是人类探测器首次进入太阳大气内部运行。此次飞行中，"帕克"利用 其宽视场成像仪拍摄了大量高清图像，记录了太阳日冕结构及太阳风的释放过程。 原标题："帕克"探测器拍到距太阳最近的图像 科技日报讯 （记者张佳欣）美国国家航空航天局（NASA）7月10日公布了一组震撼图像，即来 自"帕克" ...

Core Insights - A collaborative team from the University of Toronto, Princeton University, and the Australian National University has developed an innovative computer simulation technology that explores the interstellar medium (ISM) with unprecedented precision and scale [1][2] - The new model provides insights into astrophysical phenomena such as ISM, galactic magnetic fields, star formation, and cosmic ray propagation, and has been published in the latest issue of Nature Astronomy [1] Group 1: Model Capabilities - The new model achieves significant breakthroughs in size and detail, capable of simulating a spatial volume approximately 30 light-years across, with the smallest version reduced to about 1/5000 of that size [2] - It offers higher resolution and scalability, allowing for the simulation of dynamic changes in ISM density, which previous models could not account for [2] Group 2: Scientific Implications - The model utilizes observational data from the solar-Earth system to validate simulation results, indicating a better understanding of space weather and its effects on Earth [2] - Turbulence is a common phenomenon in various natural and engineering contexts, and the model enhances understanding of how magnetic fields influence gas flow and star formation, as well as the impact of cosmic weather events like solar storms on Earth [2]