astronomical time

简明释义

天文时

英英释义

例句

1.Events that seem instantaneous to us may take astronomical time when viewed from a cosmic perspective.

从宇宙的角度来看，对我们来说似乎瞬间发生的事件可能需要天文时间。

2.The collision of two galaxies occurs over an astronomical time scale, often taking millions of years.

两银河系的碰撞发生在天文时间尺度上，通常需要数百万年。

3.In astronomical time, the lifespan of a star can span millions to billions of years.

在天文时间中，一颗恒星的寿命可以跨越数百万到数十亿年。

4.Understanding astronomical time helps scientists grasp the evolution of galaxies over eons.

理解天文时间有助于科学家掌握星系在漫长岁月中的演变。

5.The researchers calculated the age of the universe in astronomical time, which is about 13.8 billion years.

研究人员以天文时间计算宇宙的年龄，大约是138亿年。

作文

The concept of astronomical time refers to a time scale that is based on the movements and positions of celestial bodies. This method of measuring time has been utilized by various civilizations throughout history, particularly in astronomy and navigation. Understanding astronomical time is essential for anyone interested in the universe and our place within it.In ancient times, people relied heavily on the cycles of the moon and the sun to dictate their daily lives. The lunar calendar, which is based on the phases of the moon, was one of the earliest forms of astronomical time measurement. Cultures such as the Babylonians and the Mayans developed sophisticated calendars that reflected their understanding of celestial phenomena. These calendars were not just tools for marking time; they were deeply intertwined with agricultural practices, religious ceremonies, and social events.As we advanced in our understanding of the cosmos, the concept of astronomical time evolved. With the invention of telescopes and more precise instruments, astronomers began to measure time with greater accuracy. They discovered that the Earth rotates on its axis and orbits the sun, which led to the development of more standardized timekeeping systems. The introduction of Greenwich Mean Time (GMT) in the 19th century was a significant milestone in this evolution, as it provided a universal reference point for astronomical time.Today, astronomical time is measured using atomic clocks, which are incredibly precise and reliable. These clocks measure the vibrations of atoms, providing an accuracy that is essential for modern technology. GPS systems, telecommunications, and even financial markets rely on this precision. The International Atomic Time (TAI) and Coordinated Universal Time (UTC) are examples of how astronomical time is integrated into our daily lives.Moreover, the study of astronomical time extends beyond mere timekeeping; it also encompasses the exploration of the universe. Scientists use this concept to understand the age of celestial objects, the formation of galaxies, and the expansion of the universe. By studying the light from distant stars and galaxies, astronomers can determine how long it has taken for that light to reach us, effectively allowing them to look back in time.In conclusion, the notion of astronomical time is a fundamental aspect of both our historical understanding of time and our modern scientific endeavors. It connects us to the rhythms of the universe and underscores the importance of celestial movements in shaping our perception of time. As we continue to explore the cosmos, the significance of astronomical time will only grow, reminding us of our place in the vast expanse of space and time.

“天文时间”这一概念指的是基于天体运动和位置的时间尺度。这种测量时间的方法在历史上被各种文明广泛使用，特别是在天文学和导航中。理解“天文时间”对任何对宇宙及我们在其中的位置感兴趣的人来说都是至关重要的。在古代，人们在很大程度上依赖于月亮和太阳的周期来指导他们的日常生活。基于月相的阴历是最早的“天文时间”测量形式之一。像巴比伦人和玛雅人这样的文化发展出了复杂的日历，这反映了他们对天体现象的理解。这些日历不仅仅是标记时间的工具；它们与农业实践、宗教仪式和社会活动深深交织在一起。随着我们对宇宙理解的进步，“天文时间”的概念也在不断演变。随着望远镜和更精确仪器的发明，天文学家开始以更高的精度测量时间。他们发现地球围绕自身轴线旋转并围绕太阳公转，这导致了更标准化的时间计量系统的发展。19世纪格林威治标准时间（GMT）的引入是这一演变的重要里程碑，因为它为“天文时间”提供了一个全球参考点。如今，“天文时间”是通过原子钟来测量的，这些原子钟极其精确且可靠。这些时钟测量原子的振动，提供了现代技术所需的准确性。GPS系统、电信甚至金融市场都依赖于这种精度。国际原子时间（TAI）和协调世界时（UTC）是“天文时间”如何融入我们日常生活的例子。此外，对“天文时间”的研究不仅限于简单的时间计量；它还包括对宇宙的探索。科学家利用这一概念来理解天体的年龄、星系的形成以及宇宙的扩展。通过研究来自遥远恒星和星系的光，天文学家可以确定这些光到达我们的时间，从而有效地让他们回顾过去。总之，“天文时间”的概念是我们对时间的历史理解和现代科学努力的基本方面。它将我们与宇宙的节奏联系在一起，并强调天体运动在塑造我们时间观念中的重要性。随着我们继续探索宇宙，“天文时间”的重要性只会增加，提醒我们在浩瀚的空间和时间中自己的位置。