celestial pole

简明释义

天极

英英释义

例句

1.The movement of stars around the celestial pole (天极) can be used to determine the time of night.

星星围绕celestial pole (天极) 的运动可以用来确定夜晚的时间。

2.During the summer solstice, the sun appears to circle around the celestial pole (天极) in the northern hemisphere.

在夏至期间，太阳似乎在北半球的celestial pole (天极) 周围环绕。

3.Astronomers use telescopes to observe stars that are close to the celestial pole (天极).

天文学家使用望远镜观察靠近celestial pole (天极) 的星星。

4.Navigators in ancient times relied on the position of the celestial pole (天极) for accurate sea travel.

古代航海者依赖于celestial pole (天极) 的位置来进行准确的海上旅行。

5.The North Star is located near the northern celestial pole (北天极), making it a reliable navigation point for travelers.

北极星位于北celestial pole (北天极) 附近，是旅行者可靠的导航点。

作文

The concept of the celestial pole is fundamental to our understanding of astronomy and navigation. The Earth, as it spins on its axis, creates an imaginary line that extends from the North Pole to the South Pole. This line continues outward into space and defines what we call the celestial pole. Essentially, the celestial pole refers to the points in the sky that align with the Earth's rotational axis. The North celestial pole, for instance, is located near the bright star Polaris, also known as the North Star. This star serves as a crucial reference point for navigators and stargazers alike.Understanding the celestial pole is not only important for practical navigation but also enriches our appreciation of the universe. As the Earth rotates, different stars rise and set, creating a dynamic night sky. The celestial pole helps us comprehend why certain constellations remain visible throughout the year while others disappear. For example, stars that are close to the celestial pole appear to move in smaller circles in the sky, while those farther away travel larger arcs. This phenomenon is a direct consequence of the Earth's rotation and its tilted axis, which leads to the seasonal changes we observe.In ancient times, civilizations utilized the celestial pole for various purposes. Mariners relied on the North Star to guide them during their voyages across vast oceans. Farmers used the positions of stars near the celestial pole to determine the best times for planting and harvesting crops. The importance of the celestial pole in these contexts cannot be overstated; it was a vital tool for survival and success.Today, the significance of the celestial pole extends beyond navigation. Astronomers study the celestial pole to understand the movements of celestial bodies and to map the cosmos. The positioning of telescopes and observatories often takes the celestial pole into account, as it affects how we observe and interpret data from distant galaxies and stars.Moreover, the celestial pole plays a role in modern technologies such as GPS and satellite communications. These systems rely on precise calculations of positions in relation to the Earth’s axis, which involves understanding the concept of the celestial pole. As we continue to explore new frontiers in space travel and exploration, the celestial pole remains a key element in our quest for knowledge about the universe.In conclusion, the celestial pole is more than just an abstract concept; it is a cornerstone of our understanding of the cosmos. From ancient navigation practices to contemporary astronomical research, the celestial pole has shaped human endeavors in countless ways. By appreciating its significance, we can deepen our connection to the universe and enhance our ability to navigate both the Earth and the stars above us.

“天体极”的概念是我们理解天文学和导航的基础。地球在其轴上旋转，形成了一条想象中的线，从北极延伸到南极。这条线向外延伸到太空，定义了我们所称的“天体极”。本质上，“天体极”是指与地球旋转轴对齐的天空中的点。例如，北“天体极”位于明亮的星星北斗星附近，也被称为北星。这颗星对于航海者和观星者来说都是一个至关重要的参考点。理解“天体极”不仅对实际导航很重要，还丰富了我们对宇宙的欣赏。随着地球的旋转，不同的星星升起和落下，创造了动态的夜空。“天体极”帮助我们理解为什么某些星座在一年中始终可见，而其他星座则消失。例如，靠近“天体极”的星星在天空中似乎以较小的圆圈移动，而那些更远的星星则沿着更大的弧线移动。这种现象是地球旋转及其倾斜轴的直接结果，这导致了我们观察到的季节变化。在古代，各个文明利用“天体极”用于各种目的。航海者依靠北星在广阔的海洋中指引方向。农民利用靠近“天体极”的星星的位置来确定最佳的播种和收获时间。“天体极”在这些背景下的重要性不言而喻；它是生存和成功的关键工具。今天，“天体极”的重要性超越了导航。天文学家研究“天体极”以了解天体的运动并绘制宇宙的地图。望远镜和天文台的定位通常考虑到“天体极”，因为它影响我们如何观察和解释来自遥远星系和恒星的数据。此外，“天体极”在现代技术中也发挥着作用，例如GPS和卫星通信。这些系统依赖于相对于地球轴的精确位置计算，这涉及到理解“天体极”的概念。随着我们继续探索太空旅行和探索的新前沿，“天体极”仍然是我们对宇宙知识探索的关键要素。总之，“天体极”不仅仅是一个抽象的概念；它是我们理解宇宙的基石。从古代的导航实践到当代的天文学研究，“天体极”在无数方面塑造了人类的努力。通过欣赏它的重要性，我们可以加深与宇宙的联系，并增强我们在地球和头顶星空中导航的能力。