circumpolar star

简明释义

拱极星

英英释义

例句

1.In ancient cultures, circumpolar stars 环极星 were considered sacred and were often linked to mythology.

在古代文化中，环极星 环极星被视为神圣，通常与神话相关联。

2.Navigators often use circumpolar stars 环极星 to determine their latitude when sailing at night.

航海者常常利用环极星 环极星在夜间航行时确定他们的纬度。

3.Astronomers study circumpolar stars 环极星 to understand the motion of the Earth and its axial tilt.

天文学家研究环极星 环极星以了解地球的运动及其轴倾角。

4.The North Star, also known as Polaris, is a famous circumpolar star 环极星 that remains visible all year round in the northern hemisphere.

北极星，也称为Polaris，是一颗著名的环极星 环极星，在北半球全年可见。

5.During winter nights, you can easily spot several circumpolar stars 环极星 in the northern sky.

在冬季的夜晚，你可以很容易地在北方天空中看到几颗环极星 环极星。

作文

The night sky has always fascinated humanity, serving as a canvas for our dreams and aspirations. Among the countless celestial objects that grace our heavens, the circumpolar star stands out as a remarkable phenomenon. These stars are unique in that they never set below the horizon from certain latitudes on Earth. Instead, they appear to rotate around the celestial pole, creating a mesmerizing display that has captivated stargazers for centuries. Understanding what a circumpolar star is can deepen our appreciation for the cosmos and its wonders.To grasp the concept of a circumpolar star, we must first understand the Earth's axial tilt and rotation. The Earth spins on its axis, which is tilted at an angle of approximately 23.5 degrees. This tilt causes different stars to be visible at various times of the year, depending on your geographical location. However, for those living in polar regions or near the poles, certain stars remain perpetually visible. These stars are classified as circumpolar stars because they are located close enough to the celestial poles that they do not dip below the horizon.One of the most famous circumpolar stars is Polaris, also known as the North Star. Located nearly directly above the North Pole, Polaris serves as a crucial navigational aid for travelers and explorers. Its consistent position in the sky makes it a reliable point of reference, allowing people to orient themselves even in the darkest of nights. The presence of circumpolar stars like Polaris highlights the importance of understanding our universe, as these stars can guide us through both physical and metaphorical journeys.In ancient cultures, circumpolar stars held significant meaning. For the Inuit people of the Arctic, these stars were integral to their navigation methods and seasonal calendars. They observed the movement of these stars to determine the best times for hunting and fishing. Similarly, ancient Greeks and Romans used circumpolar stars for navigation and timekeeping, integrating them into their mythology and folklore. The stories surrounding these stars illustrate how deeply intertwined human history is with the cosmos.As modern technology advances, our understanding of the universe continues to grow. Telescopes and space observatories allow astronomers to study circumpolar stars and their characteristics in greater detail. Research into these stars provides insights into stellar evolution, the life cycle of stars, and the dynamics of our galaxy. Furthermore, the study of circumpolar stars contributes to our knowledge of exoplanets, as scientists examine the environments around these stars for potential habitable worlds.In conclusion, the circumpolar star is more than just a celestial object; it is a symbol of our connection to the universe. These stars remind us of the beauty and mystery of the night sky, inspiring us to explore and learn more about our place in the cosmos. Whether we look up in wonder or use them for navigation, circumpolar stars enrich our lives in ways we may not even realize. As we continue to gaze at the stars, let us remember the significance of these remarkable celestial bodies and the stories they tell across cultures and generations.

夜空一直以来都吸引着人类，成为我们梦想和愿望的画布。在众多装点我们天空的天体中，极圈星作为一种显著的现象，脱颖而出。这些星星的独特之处在于，它们在地球某些纬度上永远不会落到地平线以下。相反，它们似乎围绕着天球极点旋转，创造出一种迷人的景象，几个世纪以来吸引着观星者。理解极圈星的概念可以加深我们对宇宙及其奇迹的欣赏。要理解极圈星的概念，我们首先必须了解地球的轴倾角和自转。地球围绕其轴自转，轴的倾斜角度约为23.5度。这个倾斜导致不同的星星在一年中的不同时间可见，具体取决于你的地理位置。然而，对于生活在极地或靠近极地的人来说，某些星星始终保持可见。这些星星被归类为极圈星，因为它们的位置足够接近天球极点，以至于不会沉入地平线以下。最著名的极圈星之一是北极星，也被称为北星。北极星几乎直接位于北极上方，是旅行者和探险者的重要导航工具。它在天空中的稳定位置使其成为一个可靠的参考点，使人们即使在最黑暗的夜晚也能找到方向。像北极星这样的极圈星的存在突显了理解我们宇宙的重要性，因为这些星星可以引导我们穿越身体和隐喻的旅程。在古代文化中，极圈星具有重要的意义。对于北极的因纽特人来说，这些星星是他们导航方法和季节日历的核心。他们观察这些星星的运动，以确定最佳的狩猎和捕鱼时间。同样，古希腊人和罗马人利用极圈星进行导航和计时，将其融入他们的神话和民间传说中。围绕这些星星的故事展示了人类历史与宇宙之间的深刻联系。随着现代科技的进步，我们对宇宙的理解不断加深。望远镜和太空天文台使天文学家能够更详细地研究极圈星及其特征。对这些星星的研究提供了关于恒星演化、恒星生命周期和我们银河系动态的洞察。此外，研究极圈星有助于我们了解系外行星，因为科学家们检查这些星星周围的环境，以寻找潜在的宜居世界。总之，极圈星不仅仅是天体；它是我们与宇宙连接的象征。这些星星提醒我们夜空的美丽和神秘，激励我们探索并了解我们在宇宙中的位置。无论我们是怀着敬畏的心情仰望星空，还是用它们进行导航，极圈星以我们可能未曾意识到的方式丰富了我们的生活。当我们继续仰望星空时，让我们记住这些卓越天体的重要性，以及它们在各个文化和世代中讲述的故事。