axis of the celestial sphere

简明释义

天轴

英英释义

例句

1.Navigators historically relied on the axis of the celestial sphere 天球的轴线 to find their way at sea.

历史上，航海者依靠天球的轴线 天球的轴线在海上找到方向。

2.The stars appear to rotate around the axis of the celestial sphere 天球的轴线 as the Earth spins on its own axis.

由于地球自转，星星似乎围绕着天球的轴线 天球的轴线旋转。

3.The tilt of the Earth's axis of the celestial sphere 天球的轴线 affects the seasons we experience.

地球的天球的轴线 天球的轴线的倾斜影响我们所经历的季节。

4.During the equinox, the axis of the celestial sphere 天球的轴线 is perpendicular to the line connecting the Earth and the Sun.

在春分和秋分时，天球的轴线 天球的轴线与连接地球和太阳的线垂直。

5.Astronomers use the concept of the axis of the celestial sphere 天球的轴线 to explain the apparent motion of celestial bodies.

天文学家使用天球的轴线 天球的轴线的概念来解释天体的表观运动。

作文

The universe has always fascinated humanity, drawing our eyes upward to the night sky filled with countless stars. Among the many concepts that astronomers and enthusiasts explore, the axis of the celestial sphere plays a crucial role in our understanding of celestial navigation and the movement of celestial bodies. This imaginary line extends from the North Celestial Pole to the South Celestial Pole, effectively dividing the celestial sphere into two hemispheres: the northern and southern celestial hemispheres. Understanding this axis is essential for various astronomical observations and for navigating the vast expanse of space.To comprehend the significance of the axis of the celestial sphere, we must first recognize what the celestial sphere represents. It is an abstract sphere that surrounds the Earth, on which all celestial bodies such as stars, planets, and galaxies are projected. This model helps us visualize the positions and movements of these celestial objects in relation to our planet. The axis of the celestial sphere is perpendicular to the plane of the Earth's orbit around the Sun, known as the ecliptic plane. As the Earth rotates on its axis, the celestial sphere appears to rotate around this imaginary line, resulting in the daily motion of the stars across our sky.The importance of the axis of the celestial sphere becomes even more evident when we consider its applications in navigation. Ancient sailors relied heavily on the stars for guidance during their voyages. By understanding the position of stars in relation to the axis of the celestial sphere, navigators could determine their latitude and longitude. For example, the North Star, or Polaris, is located nearly directly above the North Celestial Pole. Its position remains relatively fixed, making it an excellent reference point for those traveling in the Northern Hemisphere. Similarly, by observing the movement of stars around the South Celestial Pole, navigators could find their way in the Southern Hemisphere.Furthermore, the axis of the celestial sphere is integral to the study of celestial mechanics. It helps astronomers predict the positions of celestial bodies over time. The rotation of the Earth around this axis causes the apparent motion of stars and planets across the sky, which is essential for creating star charts and understanding the cyclical nature of celestial events. For instance, knowing the tilt of the Earth's axis allows astronomers to predict seasonal changes and the variations in the length of day and night throughout the year.In modern times, the axis of the celestial sphere continues to be relevant in fields such as astrophysics and space exploration. As we send spacecraft beyond our planet, understanding the orientation of the celestial sphere aids in plotting courses and determining the best times for launches. Additionally, as we discover exoplanets and other celestial phenomena, the concept of the axis of the celestial sphere remains a foundational element in our quest to understand the universe.In conclusion, the axis of the celestial sphere is more than just a theoretical concept; it is a fundamental aspect of our understanding of astronomy and navigation. From ancient mariners to modern scientists, this imaginary line has guided humanity's exploration of the cosmos. As we continue to look to the stars, the axis of the celestial sphere will remain a key element in our journey through the universe, helping us navigate both the physical and metaphorical seas of space.

宇宙一直吸引着人类，吸引着我们向夜空中无数的星星仰望。在天文学家和爱好者探索的众多概念中，天球的轴在我们理解天体导航和天体运动方面发挥着至关重要的作用。这条假想的线从北天极延伸到南天极，有效地将天球分为两个半球：北天球和南天球。理解这一轴线对于各种天文观察以及在广阔的太空中导航至关重要。要理解天球的轴的重要性，我们首先必须认识到天球所代表的含义。它是一个抽象的球体，环绕着地球，所有的天体，如星星、行星和星系，都投射在其上。这个模型帮助我们可视化这些天体相对于我们星球的位置和运动。天球的轴与地球围绕太阳的轨道平面（称为黄道平面）垂直。当地球绕其轴旋转时，天球似乎围绕这条假想的线旋转，导致星星在我们天空中的日常运动。当我们考虑其在导航中的应用时，天球的轴的重要性变得更加明显。古代水手在航行时严重依赖星星作为指引。通过理解星星相对于天球的轴的位置，导航员可以确定他们的纬度和经度。例如，北极星或极星几乎位于北天极的正上方。它的位置相对固定，使其成为北半球旅行者的优秀参考点。类似地，通过观察围绕南天极的星星运动，导航员可以在南半球找到方向。此外，天球的轴对天体力学的研究至关重要。它帮助天文学家预测天体随时间变化的位置。地球围绕这一轴的旋转导致星星和行星在天空中的表观运动，这对创建星图和理解天体事件的周期性至关重要。例如，了解地球轴的倾斜度使天文学家能够预测季节变化以及一年中昼夜长度的变化。在现代，天球的轴在天体物理学和太空探索等领域继续相关。当我们将航天器送往地球之外时，理解天球的方向有助于绘制航线并确定发射的最佳时机。此外，随着我们发现系外行星和其他天体现象，天球的轴仍然是我们理解宇宙的基础元素。总之，天球的轴不仅仅是一个理论概念；它是我们理解天文学和导航的基本方面。从古代水手到现代科学家，这条假想的线引导着人类探索宇宙。随着我们继续仰望星空，天球的轴将仍然是我们穿越宇宙旅程中的关键元素，帮助我们在空间的物理和隐喻海洋中导航。