astronomical ephemeris

简明释义

天文历

英英释义

例句

1.Using the astronomical ephemeris 天文历表, we can predict when a solar eclipse will occur.

通过使用天文历表 astronomical ephemeris，我们可以预测日食发生的时间。

2.The astronomical ephemeris 天文历表 provides data on the positions of planets over time.

该天文历表 astronomical ephemeris 提供了行星随时间变化的位置数据。

3.The satellite's position can be accurately determined using the astronomical ephemeris 天文历表 provided by the space agency.

卫星的位置可以通过航天局提供的天文历表 astronomical ephemeris 准确确定。

4.The astronomical ephemeris 天文历表 is essential for astronomers when planning observations of planetary alignments.

在计划行星对齐观测时，天文学家需要使用天文历表 astronomical ephemeris。

5.For precise navigation, sailors often refer to the astronomical ephemeris 天文历表 to locate celestial bodies.

为了精确导航，水手们常常参考天文历表 astronomical ephemeris 来定位天体。

作文

The field of astronomy has always been a source of fascination for humanity. From ancient civilizations that looked up at the stars to modern scientists who study celestial bodies, the quest to understand our universe has led to numerous developments in technology and knowledge. One of the essential tools that astronomers use is the astronomical ephemeris, which is a table or data file providing the predicted positions of astronomical objects in the sky at given times. This concept is crucial for navigation, observation, and research in various fields of science.An astronomical ephemeris serves as a guide for astronomers and navigators alike. It allows them to determine where planets, stars, and other celestial bodies will be located in the sky at specific moments. For instance, when planning an observation night, astronomers consult an astronomical ephemeris to find out the best times to view certain planets or constellations. Without this tool, tracking the movements of celestial objects would be significantly more challenging.Historically, the development of ephemerides dates back to ancient times when astronomers relied on meticulous observations to chart the movements of celestial bodies. The Babylonians and Greeks were among the first to create rudimentary forms of ephemerides, recording the positions of planets based on their observations. Over time, these records evolved into more sophisticated models, culminating in the modern astronomical ephemeris we use today.In contemporary astronomy, the creation of an astronomical ephemeris involves complex calculations that take into account various factors, including gravitational interactions between celestial bodies, relativistic effects, and the rotation of the Earth. These calculations are performed using advanced software and algorithms, allowing astronomers to predict the positions of objects with remarkable accuracy.The significance of an astronomical ephemeris extends beyond mere observation. It plays a vital role in space missions, satellite positioning, and even in the field of astrophysics. For example, when planning a mission to Mars, scientists must consult an astronomical ephemeris to determine the optimal launch window and trajectory. This ensures that spacecraft can reach their destinations efficiently and safely.Moreover, an astronomical ephemeris is also essential for amateur astronomers and enthusiasts. Many stargazers rely on these tables to enhance their viewing experiences, helping them locate planets, comets, and other celestial phenomena. With the rise of technology, numerous applications and websites provide real-time ephemeris data, making it easier than ever for anyone interested in astronomy to engage with the night sky.In conclusion, the astronomical ephemeris is a fundamental tool in the field of astronomy that aids both professional scientists and amateur enthusiasts in understanding and navigating the cosmos. Its historical evolution reflects humanity's enduring curiosity about the universe, while its modern applications demonstrate the importance of precise calculations in space exploration and observation. As we continue to explore the vastness of space, the astronomical ephemeris will remain an indispensable resource for unlocking the mysteries of the heavens.

天文学领域一直是人类着迷的源泉。从古代文明仰望星空，到现代科学家研究天体，理解宇宙的追求促成了技术和知识的众多发展。天文学家使用的基本工具之一是天文历表，它是提供在特定时间天体预测位置的表格或数据文件。这个概念对导航、观察和各个科学领域的研究至关重要。天文历表为天文学家和导航员提供了指南。它使他们能够确定行星、恒星和其他天体在天空中的具体位置。例如，在计划观测夜时，天文学家会查阅天文历表来找出最佳时间，以便观察某些行星或星座。如果没有这个工具，追踪天体的运动将变得更加困难。历史上，历表的发展可以追溯到古代，当时天文学家依靠细致的观察来绘制天体的运动。巴比伦人和希腊人是最早创建粗略形式历表的人之一，他们根据观察记录行星的位置。随着时间的推移，这些记录演变成更复杂的模型，最终形成了我们今天使用的现代天文历表。在当代天文学中，创建天文历表涉及复杂的计算，需要考虑各种因素，包括天体之间的引力相互作用、相对论效应以及地球的自转。这些计算通过先进的软件和算法进行，使天文学家能够以惊人的准确性预测天体的位置。天文历表的重要性不仅限于观察。它在太空任务、卫星定位，甚至在天体物理学领域都发挥着至关重要的作用。例如，在规划火星任务时，科学家必须查阅天文历表，以确定最佳发射窗口和轨道。这确保了航天器能够高效、安全地到达目的地。此外，天文历表对于业余天文学家和爱好者也至关重要。许多观星者依赖这些表格来提升他们的观赏体验，帮助他们找到行星、彗星和其他天体现象。随着科技的进步，许多应用程序和网站提供实时历表数据，使任何对天文学感兴趣的人都能更轻松地与夜空互动。总之，天文历表是天文学领域的一项基本工具，帮助专业科学家和业余爱好者理解和导航宇宙。它的历史演变反映了人类对宇宙持久的好奇心，而其现代应用则展示了精确计算在太空探索和观察中的重要性。随着我们继续探索浩瀚的太空，天文历表将始终是揭开天国奥秘的不可或缺的资源。