outer corona

简明释义

外冕

英英释义

例句

1.The outer corona of the sun can only be seen during a total eclipse.

太阳的外冕只能在全食期间看到。

2.The temperature in the outer corona is surprisingly higher than in the sun's surface.

在外冕中的温度出乎意料地高于太阳表面。

3.Images from space telescopes reveal new details about the outer corona.

来自太空望远镜的图像揭示了关于外冕的新细节。

4.Scientists study the outer corona to understand solar winds better.

科学家研究外冕以更好地理解太阳风。

5.During the solar eclipse, we observed the stunning features of the outer corona.

在日食期间，我们观察到了外冕的惊人特征。

作文

The sun, our closest star, is a fascinating subject of study in astronomy. Among the various layers of the sun's atmosphere, the outer corona plays a crucial role in understanding solar dynamics and its effects on space weather. The outer corona refers to the outermost layer of the sun's atmosphere, which extends millions of kilometers into space. This region is characterized by its high temperatures, often exceeding one million degrees Celsius, which is counterintuitive considering that the surface of the sun, known as the photosphere, is significantly cooler at around 5,500 degrees Celsius.The phenomenon of the outer corona has intrigued scientists for centuries. One of the most striking features of this layer is its visibility during a total solar eclipse when the moon completely obscures the sun's bright disk. During such an event, the outer corona can be seen as a halo of plasma surrounding the sun, displaying intricate structures and dynamic movements. These observations have led to many questions about the processes that heat the corona and drive solar wind, a stream of charged particles emitted by the sun.Research into the outer corona has revealed that it is not a static environment. Instead, it is influenced by magnetic fields generated by the sun's internal dynamo. These magnetic fields can create solar flares and coronal mass ejections (CMEs), which are massive bursts of solar wind and magnetic fields rising above the solar corona or being released into space. Understanding the outer corona is essential for predicting space weather events that can affect satellites, communications, and even power grids on Earth.In recent years, missions like NASA's Solar Dynamics Observatory (SDO) and the Parker Solar Probe have provided unprecedented insights into the outer corona. The data collected from these missions help scientists understand the complex interactions between the sun's magnetic field and the plasma in the corona. By studying the outer corona, researchers hope to answer fundamental questions about stellar atmospheres and the mechanisms behind solar activity.Moreover, the study of the outer corona extends beyond just solar physics. It also has implications for understanding other stars in the universe. By comparing the outer corona of our sun with that of other stars, astronomers can gain insights into stellar evolution and the behavior of different types of celestial bodies. This comparative approach enriches our understanding of the cosmos and the fundamental processes that govern it.In conclusion, the outer corona is a vital component of the sun's atmosphere that offers a window into the complexities of solar behavior and its impact on the solar system. As technology advances and our observational capabilities improve, the mysteries surrounding the outer corona will continue to unfold, providing valuable knowledge that enhances our understanding of the universe and our place within it.

太阳，我们最近的恒星，是天文学研究中的一个迷人主题。在太阳大气的各个层次中，外部日冕在理解太阳动力学及其对太空天气的影响方面起着至关重要的作用。外部日冕是指太阳大气的最外层，延伸数百万公里到太空。这一区域的特点是其高温，通常超过一百万摄氏度，这与太阳表面（称为光球）约5500摄氏度的显著较低温度形成鲜明对比。外部日冕现象几个世纪以来一直吸引着科学家的注意。这个层次的一个显著特征是在日全食期间的可见性，当月球完全遮住太阳的明亮圆盘时。在这样的事件中，外部日冕可以被看作是围绕太阳的等离子体光环，显示出复杂的结构和动态运动。这些观察引发了许多关于加热日冕和驱动太阳风的过程的问题，太阳风是由太阳发射的带电粒子流。对外部日冕的研究揭示了它并不是一个静态的环境。相反，它受到太阳内部发电机产生的磁场的影响。这些磁场可以产生太阳耀斑和日冕物质抛射（CME），这些是巨大的太阳风和磁场从太阳日冕上升或释放到太空中的爆发。理解外部日冕对于预测可能影响卫星、通信甚至地球电网的太空天气事件至关重要。近年来，像NASA的太阳动力学观测卫星（SDO）和帕克太阳探测器这样的任务提供了前所未有的关于外部日冕的见解。这些任务收集的数据帮助科学家理解太阳磁场与日冕等离子体之间的复杂相互作用。通过研究外部日冕，研究人员希望回答关于恒星大气和太阳活动机制的基本问题。此外，外部日冕的研究不仅限于太阳物理学。它还对理解宇宙中其他恒星具有重要意义。通过比较我们太阳的外部日冕与其他恒星的日冕，天文学家可以获得关于恒星演化和不同类型天体行为的见解。这种比较方法丰富了我们对宇宙的理解以及支配宇宙的基本过程。总之，外部日冕是太阳大气的重要组成部分，为我们提供了一个了解太阳行为复杂性及其对太阳系影响的窗口。随着技术的进步和观察能力的提高，围绕外部日冕的奥秘将继续展开，提供宝贵的知识，增强我们对宇宙及我们在其中位置的理解。