astronomical time

简明释义

天文时间

英英释义

例句

1.The concept of astronomical time 天文时间 helps astronomers calculate the positions of celestial bodies.

天文学的概念 天文时间 天文时间 帮助天文学家计算天体的位置。

2.The age of the universe is estimated using astronomical time 天文时间 and cosmic background radiation.

宇宙的年龄是通过 天文时间 天文时间 和宇宙微波背景辐射估算的。

3.The journey to Mars takes about six months in astronomical time 天文时间, depending on the alignment of the planets.

前往火星的旅程大约需要六个月的 天文时间 天文时间，这取决于行星的排列。

4.In our solar system, distances are often measured in astronomical time 天文时间 to simplify calculations.

在我们的太阳系中，距离通常以 天文时间 天文时间 来测量，以简化计算。

5.Scientists use astronomical time 天文时间 to track the movements of galaxies over billions of years.

科学家使用 天文时间 天文时间 来追踪数十亿年内银河系的运动。

作文

The concept of astronomical time refers to the vast scales of time used in astronomy to describe the life cycles of celestial bodies and the evolution of the universe itself. Unlike the conventional time we measure in hours and minutes, astronomical time encompasses millions, billions, and even trillions of years. This perspective is crucial for understanding the processes that govern the cosmos, from the birth of stars to the eventual fate of galaxies.To grasp the significance of astronomical time, one must first consider the age of the universe, estimated to be around 13.8 billion years. This immense duration allows astronomers to study the formation of the first galaxies and stars, which occurred only a few hundred million years after the Big Bang. The processes involved in stellar evolution take place over millions of years, with stars like our Sun having lifespans of about 10 billion years. Understanding these timelines is essential for predicting the future of our solar system and the eventual fate of Earth.Moreover, astronomical time helps us comprehend the dynamics of cosmic events. For instance, supernovae, which are the explosive deaths of massive stars, can illuminate entire galaxies for brief periods, yet their occurrence is rare on human timescales. The study of such phenomena requires an appreciation of time scales that extend far beyond our daily experiences. Astronomers utilize astronomical time to model the life cycles of stars and the interactions between galaxies, allowing them to predict future events in the universe.In addition to stellar and galactic evolution, astronomical time plays a vital role in cosmology, the study of the universe's origin and structure. The theory of cosmic inflation, for example, suggests that the universe expanded exponentially in the fractions of a second after the Big Bang. Understanding this rapid expansion necessitates a framework that operates on astronomical time, as the events that unfolded during this period set the stage for all subsequent cosmic development.Furthermore, astronomical time challenges our perception of existence. As humans, we often focus on our short lives, measuring time in years or decades. However, when we consider the lifespan of the universe or the time it takes for light from distant stars to reach us, we realize that our existence is but a fleeting moment in the grand tapestry of cosmic history. This realization can be both humbling and awe-inspiring, prompting us to reflect on our place in the universe.In conclusion, astronomical time is a fundamental aspect of astronomical studies that enables us to understand the universe's past, present, and future. By appreciating the vastness of time scales involved in cosmic events, we gain insight into the intricate processes that shape our reality. As we continue to explore the cosmos, the concept of astronomical time will remain essential in unraveling the mysteries of the universe and our existence within it.

“天文时间”这一概念指的是在天文学中使用的庞大时间尺度，用于描述天体的生命周期和宇宙本身的演化。与我们用小时和分钟来测量的常规时间不同，“天文时间”涵盖了数百万、数十亿甚至数万亿年。这种视角对于理解支配宇宙的过程至关重要，从恒星的诞生到星系的最终命运。要理解“天文时间”的重要性，首先必须考虑宇宙的年龄，估计约为138亿年。这段巨大的时间使天文学家能够研究在大爆炸后仅几亿年内形成的第一批星系和恒星。恒星演化涉及的过程通常持续数百万年，例如像我们的太阳这样的恒星的寿命约为100亿年。理解这些时间线对于预测我们太阳系的未来及地球的最终命运至关重要。此外，“天文时间”帮助我们理解宇宙事件的动态。例如，超新星是大质量恒星的爆炸性死亡，能够在短时间内照亮整个星系，但它们在人的时间尺度上发生的频率很低。研究这种现象需要一种超越我们日常经验的时间尺度。天文学家利用“天文时间”来模拟恒星的生命周期和星系之间的相互作用，使他们能够预测宇宙中的未来事件。除了恒星和星系的演化，“天文时间”在宇宙学中也扮演着重要角色，宇宙学是研究宇宙起源和结构的学科。例如，宇宙膨胀理论表明，在大爆炸后的一瞬间，宇宙以指数级速度膨胀。理解这一快速膨胀需要一种在“天文时间”上运作的框架，因为在这一时期发生的事件为随后的所有宇宙发展奠定了基础。此外，“天文时间”挑战了我们对存在的看法。作为人类，我们常常关注短暂的生命，以年或十年为单位来衡量时间。然而，当我们考虑从遥远的星星发出的光到达我们的时间时，我们意识到我们的存在只是宇宙历史宏伟画卷中的短暂一瞬。这种认识既令人谦卑又令人敬畏，促使我们反思自己在宇宙中的位置。总之，“天文时间”是天文学研究的一个基本方面，使我们能够理解宇宙的过去、现在和未来。通过欣赏宇宙事件中涉及的巨大时间尺度，我们获得了对塑造我们现实的复杂过程的洞察。随着我们继续探索宇宙，“天文时间”的概念将仍然是解开宇宙奥秘和我们在其中存在的重要工具。