heliosphere

简明释义

英[ˈhiːlɪəʊˌsfɪə]美[ˈhiːliəˌsfɪr]

n. 太阳风层；日光层；[地物] 日球层

英英释义

单词用法

同义词

反义词

例句

1.One possibility is that pressure from this external magnetic field has forced particles just inside the heliosphere to bunch together into a ribbon.

一个可能性就是外部磁场的压力强行把日球层内部的粒子压到了一起，形成了窄带。

2.Understanding more about the heliosphere and its ability to filter out galactic cosmic rays could be critical for assessing the safety of human space travel, Schwadron notes.

对日球层和它过滤宇宙射线的机制了解的越多，就越有助于评估人类星际航行安全性。

3."First and foremost, this is a big surprise because we thought we know a lot about this region, the edge of the heliosphere," McComas says.

“首先，这太让人吃惊了，因为我们认为对日球层的边缘已经了解的够多的了，”麦科马斯说道。

4.The heliosphere shields the solar system from 90 percent of energetic cosmic rays — high-speed charged particles that would otherwise bombard the planets and harm life.

日球层就像一个盾牌，挡住了90%高能宇宙射线。 宇宙射线由高速带电粒子组成，会轰击星球并伤害生物。

5.The atoms recorded by IBEX, which orbits Earth, took a year or two, depending on their energies, to reach the craft from the outer edge of the heliosphere.

IBEX记录到的原子绕地球旋转，根据其自身能量不同，需要1到2年才能从日球层的边缘到达探测器的位置。

6.Understanding more about the heliosphere and its ability to filter out galactic cosmic rays could be critical for assessing the safety of human space travel, Schwadron notes.

对日球层和它过滤宇宙射线的机制了解的越多，就越有助于评估人类星际航行安全性。

7.The two spacecraft are the most distant human-made objects, out at the edge of the heliosphere — the bubble the sun creates around the solar system.

这两艘飞船是目前距离最遥远的人造物体，远在日光层外缘——由太阳产生的，环绕太阳系的巨型泡状体。

8.Many astronomers think that the limit of the heliosphere, known as the heliopause, is about 9 billion miles (15 billion kilometers) from the sun.

许多天文学家认为，日球层的边界是太阳风顶层，距离太阳90亿英里(150亿公里)。

9.Scientists study the boundaries of the heliosphere to understand how it interacts with interstellar space.

科学家研究日球层的边界，以了解它如何与星际空间相互作用。

10.The size of the heliosphere can vary depending on solar activity.

根据太阳活动的不同，日球层的大小可能会有所变化。

11.Understanding the heliosphere helps scientists predict space weather that can affect satellites.

理解日球层有助于科学家预测可能影响卫星的太空天气。

12.The Voyager spacecraft have traveled beyond the heliosphere and into interstellar space.

旅行者号航天器已经穿越了日球层，进入了星际空间。

13.The solar wind creates a bubble around the sun known as the heliosphere, which protects us from cosmic radiation.

太阳风在太阳周围形成一个被称为日球层的气泡，这保护我们免受宇宙辐射。

作文

The universe is a vast and mysterious place, filled with phenomena that challenge our understanding of physics and astronomy. One such phenomenon is the heliosphere, which plays a crucial role in protecting our solar system from cosmic radiation and interstellar particles. The heliosphere can be described as a vast bubble created by the solar wind, a stream of charged particles emitted by the Sun. This bubble extends far beyond the orbit of Pluto, marking the boundary between our solar system and the interstellar medium. Understanding the heliosphere is essential for comprehending how our solar system interacts with the surrounding space environment.The solar wind travels at speeds of about 400 kilometers per second, pushing against the interstellar medium, which consists of gas and dust scattered throughout the galaxy. As the solar wind expands outward, it creates a protective shield around the planets, including Earth. This shield is vital for life on our planet because it helps to deflect harmful cosmic rays that could otherwise strip away the atmosphere and expose the surface to radiation. Thus, the heliosphere acts as a barrier, ensuring that our solar system remains a relatively safe haven in the hostile environment of space.One of the most fascinating aspects of the heliosphere is its shape. It is not a perfect sphere; rather, it resembles a teardrop due to the influence of the interstellar medium's pressure. The side of the heliosphere facing the Sun is compressed, while the opposite side stretches out into a long tail. This unique shape results from the dynamic interactions between the solar wind and the surrounding space, illustrating the complex nature of cosmic forces at play.In recent years, scientists have made significant advancements in studying the heliosphere. Missions like Voyager 1 and Voyager 2 have provided invaluable data about the outer boundaries of the solar system. These spacecraft have crossed into the heliosphere's outer regions and are now traveling through interstellar space. Their findings have revealed that the heliosphere is not a static entity but rather a dynamic structure that changes with the solar cycle, which lasts about 11 years. During periods of high solar activity, the heliosphere expands, while during low activity, it contracts.Understanding the heliosphere is not only important for astrophysics but also has practical implications for space exploration. As humanity plans missions to Mars and beyond, knowledge of the heliosphere will help protect astronauts from harmful radiation. Additionally, studying the heliosphere can provide insights into the behavior of other stars and their planetary systems, offering a broader perspective on the universe.In conclusion, the heliosphere is a remarkable feature of our solar system that serves as a protective shield against the harsh environment of space. Its unique characteristics and dynamic nature highlight the interplay between solar activity and interstellar conditions. As we continue to explore the cosmos, the study of the heliosphere will remain a vital area of research, helping us to understand not only our own solar system but also the broader universe in which we reside.

宇宙是一个广阔而神秘的地方，充满了挑战我们对物理学和天文学理解的现象。其中一个现象是日球层，它在保护我们的太阳系免受宇宙辐射和星际粒子影响方面发挥着至关重要的作用。日球层可以被描述为一个由太阳风形成的巨大气泡，太阳风是由太阳发出的带电粒子的流。这种气泡延伸到冥王星的轨道之外，标志着我们的太阳系与星际介质之间的边界。理解日球层对于理解我们的太阳系如何与周围的空间环境相互作用至关重要。太阳风以大约每秒400公里的速度传播，推动着星际介质，星际介质由散布在整个银河系的气体和尘埃组成。当太阳风向外扩展时，它在行星周围形成一个保护屏障，包括地球。这个屏障对我们星球上的生命至关重要，因为它有助于偏转有害的宇宙射线，否则这些射线可能会剥夺大气层并使表面暴露于辐射中。因此，日球层作为一个屏障，确保我们的太阳系在宇宙的恶劣环境中保持相对安全的避风港。日球层最迷人的方面之一是它的形状。它不是一个完美的球体；相反，由于星际介质的压力影响，它呈泪滴状。面对太阳的日球层一侧被压缩，而另一侧则延伸出一个长尾。这种独特的形状是太阳风与周围空间之间动态相互作用的结果，说明了宇宙力量之间复杂的关系。近年来，科学家在研究日球层方面取得了重大进展。像旅行者1号和旅行者2号这样的任务提供了有关太阳系外部边界的宝贵数据。这些航天器已经穿越了日球层的外部区域，现在正穿越星际空间。它们的发现揭示了日球层不是一个静态实体，而是一个随着太阳周期（大约11年）变化的动态结构。在高太阳活动期间，日球层扩展，而在低活动期间，它收缩。了解日球层不仅对天体物理学重要，而且对太空探索也具有实际意义。当人类计划前往火星及更远的地方的任务时，了解日球层将有助于保护宇航员免受有害辐射的影响。此外，研究日球层可以为其他恒星及其行星系统的行为提供见解，从而为我们提供对宇宙的更广泛视角。总之，日球层是我们太阳系的一个显著特征，作为一个保护屏障，抵御宇宙的恶劣环境。它独特的特性和动态的本质突显了太阳活动与星际条件之间的相互作用。随着我们继续探索宇宙，对日球层的研究将仍然是一个重要的研究领域，帮助我们理解不仅仅是我们自己的太阳系，还有我们所居住的更广阔的宇宙。