astronomical year

简明释义

天文年

英英释义

例句

1.The concept of an astronomical year is crucial for understanding the Earth's orbit around the Sun.

理解地球围绕太阳的轨道，天文年的概念至关重要。

2.Astronomers use the term astronomical year to differentiate it from a calendar year.

天文学家使用术语天文年来将其与日历年区分开。

3.In astronomy, one astronomical year is defined as the time it takes for Earth to complete one full orbit around the Sun.

在天文学中，天文年被定义为地球完成一次绕太阳完整轨道所需的时间。

4.The astronomical year is important for calculating the timing of celestial events.

天文年对计算天文事件的时机非常重要。

5.The length of an astronomical year is approximately 365.25 days.

天文年的长度大约为365.25天。

作文

The concept of an astronomical year refers to the time it takes for the Earth to complete one full orbit around the Sun. This period is approximately 365.25 days, which is why we have a leap year every four years to account for the extra quarter of a day. Understanding the astronomical year is essential not only for astronomers but also for anyone interested in how our planet operates within the vast universe. In ancient times, civilizations relied heavily on the cycles of the astronomical year to guide their agricultural practices. The Egyptians, for example, used the heliacal rising of the star Sirius to predict the annual flooding of the Nile River, which was crucial for their farming. This connection between astronomy and agriculture highlights the importance of the astronomical year in human history. As our understanding of the universe has evolved, so too has our grasp of the astronomical year. With advancements in technology, we can now measure this time frame with incredible precision. Space agencies like NASA use the concept of the astronomical year when planning missions and studying celestial bodies. For instance, when sending spacecraft to other planets, scientists must consider the astronomical year of those planets to determine the best launch windows and travel times. Moreover, the astronomical year plays a significant role in our calendar systems. The Gregorian calendar, which is widely used today, is based on the astronomical year. It incorporates the leap year to ensure that our calendar stays aligned with the Earth's position relative to the Sun. This alignment is crucial for various cultural and religious events that depend on specific dates throughout the year. In addition to its practical applications, the astronomical year also inspires curiosity and wonder about the cosmos. The idea that our planet is part of a larger system, orbiting a massive star, encourages people to explore and learn more about astronomy. Many enthusiasts spend their nights stargazing, tracking the movements of celestial bodies, and pondering the vastness of space. The astronomical year serves as a reminder of our place in the universe and the intricate dance of celestial mechanics that governs our existence. In conclusion, the astronomical year is not just a measurement of time; it is a fundamental concept that connects us to the cosmos. From ancient agricultural practices to modern space exploration, the astronomical year has shaped our understanding of the world and the universe beyond. As we continue to explore the mysteries of space, the significance of the astronomical year will undoubtedly remain a vital aspect of our journey through the stars.

“天文年”这一概念指的是地球绕太阳完成一次完整轨道所需的时间。这个周期大约为365.25天，这就是为什么每四年我们会有一个闰年，以补偿多出的四分之一天。理解“天文年”不仅对天文学家至关重要，对于任何对我们星球在浩瀚宇宙中运作感兴趣的人来说也是如此。在古代，文明高度依赖“天文年”的周期来指导他们的农业实践。例如，埃及人利用天狼星的首次升起预测尼罗河的年度洪水，这对他们的农业至关重要。这种天文学与农业之间的联系突显了“天文年”在人类历史上的重要性。随着我们对宇宙的理解不断发展，我们对“天文年”的掌握也在不断提高。随着科技的进步，我们现在可以以极高的精度测量这个时间框架。像NASA这样的太空机构在计划任务和研究天体时使用“天文年”这一概念。例如，在向其他行星发送航天器时，科学家必须考虑这些行星的“天文年”来确定最佳发射窗口和旅行时间。此外，“天文年”在我们的日历系统中也发挥着重要作用。今天广泛使用的公历是基于“天文年”的。它通过引入闰年来确保我们的日历与地球相对于太阳的位置保持一致。这种对齐对于各种文化和宗教事件至关重要，这些事件依赖于一年中的特定日期。除了实用应用外，“天文年”还激发了人们对宇宙的好奇心和敬畏感。我们的星球作为一个更大系统的一部分，围绕一颗巨大的恒星旋转，这一想法鼓励人们探索和学习更多关于天文学的知识。许多爱好者在夜晚仰望星空，追踪天体的运动，思考空间的浩瀚。“天文年”提醒我们在宇宙中的位置以及支配我们存在的天体力学的复杂舞蹈。总之，“天文年”不仅仅是时间的测量；它是一个基本概念，将我们与宇宙连接在一起。从古代农业实践到现代太空探索，“天文年”塑造了我们对世界和宇宙的理解。随着我们继续探索太空的奥秘，“天文年”的重要性无疑将继续成为我们穿越星辰旅程的重要方面。