celestial meridian

简明释义

天球子午圈

英英释义

例句

1.During the equinox, the sun crosses the celestial meridian 天文子午线 at noon.

在春分和秋分时，太阳在中午穿过天文子午线 celestial meridian。

2.The astronomer explained how the stars align with the celestial meridian 天文子午线 during the summer solstice.

天文学家解释了在夏至期间，星星如何与天文子午线 celestial meridian 对齐。

3.The concept of the celestial meridian 天文子午线 is crucial for understanding celestial navigation.

理解天文导航时，天文子午线 celestial meridian 的概念至关重要。

4.Astronomers mark the position of planets relative to the celestial meridian 天文子午线 in their charts.

天文学家在他们的星图中相对于天文子午线 celestial meridian 标记行星的位置。

5.Navigators use the celestial meridian 天文子午线 to determine their longitude at sea.

导航员使用天文子午线 celestial meridian 来确定他们在海上的经度。

作文

In the vast expanse of the night sky, the stars twinkle like diamonds scattered across a dark velvet canvas. Among these celestial wonders, one concept that has intrigued astronomers and navigators alike is the celestial meridian. The celestial meridian refers to an imaginary line in the sky that runs from the North celestial pole to the South celestial pole, passing directly overhead through an observer's zenith. This line is crucial for understanding the position of celestial bodies and plays a significant role in the field of astronomy.The significance of the celestial meridian can be traced back to ancient civilizations, where the study of the stars was essential for navigation and agriculture. For instance, the Egyptians aligned their pyramids with the stars, using the celestial meridian to determine the correct orientation. Similarly, sailors relied on the positions of stars along the celestial meridian to guide their voyages across the oceans. This practice laid the foundation for modern navigation techniques and helped humanity explore the world more effectively.In contemporary astronomy, the celestial meridian serves as a reference point for astronomers when observing celestial events. The position of stars and planets changes throughout the night due to the rotation of the Earth. By knowing when a celestial object crosses the celestial meridian, astronomers can calculate its position in the sky more accurately. This knowledge is essential for tracking satellites, studying distant galaxies, and even searching for exoplanets.Moreover, the celestial meridian is also significant in terms of timekeeping. The concept of local sidereal time is based on the position of the celestial meridian. When a star crosses the celestial meridian, it indicates a specific time of night, which can be used to keep track of time in relation to the stars. This method of timekeeping is particularly useful for astronomers who need precise measurements for their observations.Understanding the celestial meridian also enhances our appreciation of the universe. It reminds us that we are part of a larger cosmic framework where everything is interconnected. The movements of celestial bodies along the celestial meridian reflect the intricate dance of the cosmos, a phenomenon that has captivated human imagination for centuries.In conclusion, the celestial meridian is not merely an abstract concept; it is a vital tool that has shaped our understanding of the universe. From ancient navigators to modern astronomers, the celestial meridian has played a crucial role in guiding exploration, enhancing timekeeping, and fostering a deeper connection with the cosmos. As we continue to gaze up at the night sky, let us remember the significance of the celestial meridian and the wonders it represents in the grand tapestry of the universe.

在浩瀚的夜空中，星星像散落在黑色天鹅绒画布上的钻石一样闪烁。 在这些天体奇观中，一个让天文学家和航海家都感到好奇的概念是天体子午线。 天体子午线是指在天空中从北天极到南天极的虚拟线，直接穿过观察者的天顶。 这条线对于理解天体的位置至关重要，并在天文学领域中发挥着重要作用。天体子午线的重要性可以追溯到古代文明，那时对星星的研究对航海和农业至关重要。 例如，埃及人将金字塔与星星对齐，利用天体子午线确定正确的方向。 同样，水手依靠沿着天体子午线的星星位置来引导他们在海洋中的航行。 这种做法为现代导航技术奠定了基础，帮助人类更有效地探索世界。在当代天文学中，天体子午线作为天文学家观察天体事件的参考点。 由于地球的自转，星星和行星在整个夜晚的位置会发生变化。 通过知道某个天体何时穿过天体子午线，天文学家可以更准确地计算它在天空中的位置。 这一知识对于跟踪卫星、研究遥远的星系甚至寻找系外行星至关重要。此外，天体子午线在时间测量方面也很重要。 当地恒星时间的概念是基于天体子午线的位置。 当一颗星星穿过天体子午线时，它表示夜晚的特定时间，这可以用来跟踪与星星相关的时间。这种时间测量方法对于需要精确测量以进行观察的天文学家尤其有用。理解天体子午线也增强了我们对宇宙的欣赏。 它提醒我们，我们是一个更大宇宙框架的一部分，所有事物都是相互关联的。 天体沿着天体子午线的运动反映了宇宙的复杂舞蹈，这种现象几个世纪以来一直吸引着人类的想象力。总之，天体子午线不仅仅是一个抽象概念； 它是一个重要的工具，塑造了我们对宇宙的理解。 从古代航海家到现代天文学家，天体子午线在引导探索、增强时间测量和促进与宇宙更深层次的联系方面发挥了关键作用。 当我们继续仰望夜空时，让我们记住天体子午线的重要性以及它在宇宙宏伟织锦中所代表的奇迹。