navigational star catalog

简明释义

航用恒星表

英英释义

例句

1.The ancient mariners relied heavily on the navigational star catalog for their long voyages.

古代水手在长途航行中非常依赖导航星图。

2.Sailors often refer to the navigational star catalog to plot their course at sea.

水手们常常参考导航星图来规划他们的航程。

3.The navigational star catalog is essential for astronomers who need to identify stars in the night sky.

对于需要识别夜空中星星的天文学家来说，导航星图是必不可少的。

4.Using a navigational star catalog, pilots can navigate through remote areas without modern technology.

通过使用导航星图，飞行员可以在偏远地区无需现代技术进行导航。

5.In astronomy classes, students learn how to use the navigational star catalog to locate celestial bodies.

在天文学课堂上，学生们学习如何使用导航星图来定位天体。

作文

In the vast expanse of the night sky, stars have served as guides for countless generations. Among the many tools that sailors and explorers have used to navigate the seas and unknown territories, the navigational star catalog stands out as a vital resource. This collection of celestial bodies not only helps in determining one's position on Earth but also plays a crucial role in various scientific fields, including astronomy and navigation.A navigational star catalog is essentially a comprehensive list of stars that includes their positions and brightness. These catalogs are meticulously compiled based on extensive observations and measurements taken by astronomers. Each star is assigned specific coordinates, which make it easier for navigators to locate them in the night sky. Traditionally, these catalogs were created using telescopes and manual calculations; however, advancements in technology have led to the development of digital catalogs that are more precise and accessible.One of the most famous navigational star catalogs is the Hipparcos catalog, named after the ancient Greek astronomer Hipparchus. Launched in the late 20th century, this catalog provided unprecedented accuracy in stellar measurements, allowing navigators to pinpoint their locations with remarkable precision. The Hipparcos mission collected data on over 100,000 stars, revolutionizing our understanding of the cosmos and enhancing navigation techniques.The importance of a navigational star catalog extends beyond maritime navigation. In the field of aviation, pilots rely on these catalogs to ensure safe flight paths, especially during night flights or in poor visibility conditions. By referencing the positions of stars, pilots can maintain their bearings and navigate effectively, even when modern GPS systems fail.Moreover, the use of navigational star catalogs is not limited to Earth-bound navigation. Space missions, such as those conducted by NASA and other space agencies, utilize these catalogs to chart courses through the solar system and beyond. When spacecraft travel to distant planets or moons, they often reference stars to determine their trajectory and make necessary course adjustments.In addition to practical applications, navigational star catalogs serve an educational purpose. They provide a wealth of information about the universe, including the life cycles of stars, their distances from Earth, and their chemical compositions. Students and amateur astronomers can use these catalogs to learn more about the night sky and develop a deeper appreciation for the cosmos.In conclusion, the navigational star catalog is an indispensable tool in both historical and modern navigation. Its role in helping navigators find their way across oceans and through the skies cannot be overstated. As technology continues to advance, we can expect even more accurate and detailed catalogs to emerge, further enhancing our ability to explore and understand the universe. Whether for practical navigation or academic study, the navigational star catalog remains a cornerstone of celestial navigation and exploration, guiding us through the mysteries of the night sky.

在浩瀚的夜空中，星星为无数代人提供了指引。在航海者和探险者用来导航海洋和未知领域的众多工具中，导航星表作为一个重要资源脱颖而出。这个星体的集合不仅有助于确定人们在地球上的位置，还在天文学和导航等多个科学领域中发挥着至关重要的作用。导航星表本质上是一个包含星星位置和亮度的综合列表。这些目录是基于天文学家进行的大量观察和测量而精心编制的。每颗星星都被分配了特定的坐标，这使得导航者更容易在夜空中找到它们。传统上，这些目录是通过望远镜和手动计算创建的；然而，技术的进步导致了数字目录的发展，使其更加精确和易于获取。最著名的导航星表之一是希帕恰斯星表，以古希腊天文学家希帕恰斯的名字命名。该星表于20世纪末发布，提供了前所未有的恒星测量精度，使导航者能够以惊人的准确性确定他们的位置。希帕恰斯任务收集了超过10万颗星星的数据，彻底改变了我们对宇宙的理解，并增强了导航技术。导航星表的重要性不仅限于海上导航。在航空领域，飞行员依赖这些目录以确保安全的飞行路径，尤其是在夜间飞行或能见度较差的情况下。通过参考星星的位置，飞行员可以保持方向并有效导航，即使现代GPS系统失效。此外，导航星表的使用不仅限于地球导航。NASA和其他太空机构进行的太空任务利用这些目录在太阳系及更远的地方绘制航线。当航天器前往遥远的行星或卫星时，它们常常参考星星来确定轨道并进行必要的航向调整。除了实际应用，导航星表还具有教育意义。它们提供了关于宇宙的大量信息，包括恒星的生命周期、与地球的距离以及它们的化学成分。学生和业余天文学家可以利用这些目录来了解更多关于夜空的知识，并加深对宇宙的欣赏。总之，导航星表是历史和现代导航中不可或缺的工具。它在帮助导航者穿越海洋和天空方面的作用不容小觑。随着技术的不断进步，我们可以期待出现更准确、更详细的目录，进一步增强我们探索和理解宇宙的能力。无论是用于实际导航还是学术研究，导航星表始终是天体导航和探索的基石，引导我们穿越夜空的奥秘。