aphelion distance

简明释义

远日点距离

英英释义

例句

1.Understanding the aphelion distance 远日点距离 helps scientists model climate change on other planets.

理解远日点距离 远日点距离有助于科学家模拟其他行星的气候变化。

2.The planet's orbit was calculated to have an average aphelion distance 远日点距离 of 1.5 astronomical units.

这颗行星的轨道被计算出平均远日点距离 远日点距离为1.5个天文单位。

3.The aphelion distance 远日点距离 of Mars is significantly greater than that of Earth.

火星的远日点距离 远日点距离明显大于地球。

4.During the summer solstice, Earth is at its aphelion distance 远日点距离, which affects global temperatures.

在夏至期间，地球处于其远日点距离 远日点距离，这会影响全球气温。

5.Astronomers often study the aphelion distance 远日点距离 of comets to predict their orbits.

天文学家常常研究彗星的远日点距离 远日点距离以预测它们的轨道。

作文

In the vast expanse of our solar system, the dynamics of celestial bodies are governed by various gravitational forces and orbital mechanics. One of the essential concepts in understanding these dynamics is the term aphelion distance, which refers to the farthest point in an object's orbit around the Sun. At this point, the object is at its maximum distance from the Sun, resulting in a slower orbital speed due to the weaker gravitational pull. This phenomenon can be observed in many celestial objects, including planets, comets, and asteroids. Understanding the aphelion distance is crucial for astronomers and scientists as it helps them predict the behavior and characteristics of these celestial bodies.The concept of aphelion distance is particularly significant when studying the orbits of planets in our solar system. For instance, Earth reaches its aphelion distance around early July each year, when it is approximately 152.1 million kilometers away from the Sun. This distance contrasts with its perihelion distance, which is the closest point to the Sun, occurring around early January. The difference between these two distances contributes to the variations in solar energy that different parts of the Earth receive throughout the year, influencing seasonal changes.Moreover, the aphelion distance plays a vital role in the study of comets. These icy bodies often have highly elliptical orbits, causing them to travel vast distances from the Sun before returning. When they reach their aphelion distance, they can be millions or even billions of kilometers away from the Sun, where they remain dormant until their orbits bring them back into the inner solar system. This cyclical journey not only provides insights into the composition of these ancient celestial bodies but also enhances our understanding of the origins of the solar system itself.In addition to its significance in astronomy, the aphelion distance has practical applications in space exploration. When planning missions to other planets or celestial bodies, scientists must consider their distances from the Sun at various points in their orbits. For example, planning a mission to Mars requires knowledge of its aphelion distance, which is about 250 million kilometers. Understanding this distance helps engineers design spacecraft capable of enduring the long journey and the varying conditions encountered during the mission.Furthermore, the concept of aphelion distance extends beyond our solar system. Astronomers have discovered exoplanets orbiting distant stars, and analyzing their aphelion distances provides valuable information about their potential for supporting life. By studying these distances, scientists can infer the temperature and climate conditions of these distant worlds, thus expanding our understanding of the universe.In conclusion, the term aphelion distance is not just a technical term; it encapsulates a fundamental aspect of celestial mechanics that influences the behavior of various astronomical objects. From our own planet's seasonal changes to the intricate dynamics of comets and the exploration of other worlds, the aphelion distance is a key factor in the study of the cosmos. As we continue to explore and learn about our universe, grasping such concepts will enhance our understanding of the intricate dance of celestial bodies and their relationships with one another.

在我们太阳系的广阔空间中，天体的动态受到各种引力和轨道力学的支配。理解这些动态的一个基本概念是术语远日点距离，它指的是一个物体绕太阳运行时的最远点。在这个点上，物体距离太阳最远，因此由于引力的减弱，其轨道速度较慢。这种现象可以在许多天体中观察到，包括行星、彗星和小行星。理解远日点距离对天文学家和科学家至关重要，因为它帮助他们预测这些天体的行为和特征。远日点距离的概念在研究我们太阳系中的行星轨道时尤其重要。例如，地球每年在七月初达到其远日点距离，此时它距离太阳约152.1万公里。这个距离与其近日点距离形成对比，近日点是离太阳最近的点，发生在一月初。这两个距离之间的差异导致地球不同部分在一年中的不同时间接收到的太阳能量变化，从而影响季节变化。此外，远日点距离在研究彗星时也发挥着重要作用。这些冰冷的天体通常具有高度椭圆的轨道，使它们能够在远离太阳的地方旅行。当它们达到远日点距离时，可能会距离太阳数百万甚至数十亿公里，在那里保持休眠状态，直到它们的轨道将它们带回内太阳系。这种周期性的旅程不仅提供了关于这些古老天体成分的见解，还增强了我们对太阳系起源的理解。除了在天文学中的重要性，远日点距离在太空探索中也有实际应用。在计划前往其他行星或天体的任务时，科学家必须考虑它们在轨道不同点距离太阳的距离。例如，计划前往火星的任务需要了解其远日点距离，大约为2.5亿公里。理解这一距离有助于工程师设计能够承受漫长旅程和任务中遇到的各种条件的航天器。此外，远日点距离的概念超越了我们的太阳系。天文学家发现围绕遥远恒星运行的系外行星，分析它们的远日点距离提供了关于它们支持生命潜力的宝贵信息。通过研究这些距离，科学家可以推断出这些遥远世界的温度和气候条件，从而扩展我们对宇宙的理解。总之，术语远日点距离不仅仅是一个技术术语；它概括了影响各种天文物体行为的天体力学的基本方面。从我们自己的行星季节变化到彗星的复杂动态以及对其他世界的探索，远日点距离是研究宇宙的关键因素。随着我们继续探索和学习我们的宇宙，掌握这样的概念将增强我们对天体之间复杂舞蹈及其相互关系的理解。