aphelion

简明释义

英[æpˈhiːlɪən]美[æˈfilɪən]

n. 远日点

复 数 a p h e l i a 或 a p h e l i o n s

英英释义

单词用法

同义词

反义词

例句

1.This composite neatly compares two pictures of the Sun taken with the same telescope and camera on the dates of Perihelion (closest approach) and Aphelion in 2008.

这张合成照片直观地比较了两张由同一台望远镜和照相机拍摄的太阳，一张拍摄于2008年近日点，另一个拍摄于同年的远日点。

2.But it's not that simple either, because the dates of the perihelion and aphelion are also shifting.

但这并不是简单的一件事情，因为近日点和远日点的日期都会变换。

3.This composite neatly compares two pictures of the Sun taken with the same telescope and camera on the dates of Perihelion (closest approach) and Aphelion in 2008.

这张合成照片直观地比较了两张由同一台望远镜和照相机拍摄的太阳，一张拍摄于2008年近日点，另一个拍摄于同年的远日点。

4.The point in the orbit nearest the sun is called perihelion, while the point farthest is called aphelion.

在轨道上最接近太阳的点被称为近日点，而最远离太阳的点被称为远日点。

5.He also figured out the planet goes faster when it's at perihelion, nearer the sun, than when it's at aphelion, its farthest distance.

他还指出了，地球在近日点的速度要比它在远日点快，近日点离太阳比较近，远日点是距离太阳最远的地方。

6.The Q is - do you mean Pluto in its aphelion or perihelion ?

我的问题是，冥王星此时是在近地点还是远地点？

7.W hen the Earth moves from perihelion to aphelion, its radiation belts are expansion, and aphelion to perihelion contraction.

当地球从远日点运动到近日点时，地球辐射带向内收缩。

8.A comet is at aphelion when it is farthest from the sun.

彗星离太阳最远时就是在它的远日点上。

9.At aphelion 远日点, the Sun appears slightly smaller in the sky.

在aphelion 远日点时，太阳在天空中显得稍微小一些。

10.The Earth reaches its aphelion 远日点 in early July each year.

地球每年在七月初达到它的aphelion 远日点。

11.Astronomers study the effects of aphelion 远日点 on seasonal climate changes.

天文学家研究aphelion 远日点对季节气候变化的影响。

12.During aphelion 远日点, the distance between the Earth and the Sun is at its maximum.

在aphelion 远日点时，地球与太阳之间的距离达到了最大值。

13.The concept of aphelion 远日点 is crucial for understanding planetary orbits.

理解行星轨道时，aphelion 远日点的概念至关重要。

作文

The universe is filled with fascinating phenomena that captivate our imagination and expand our understanding of the cosmos. One such phenomenon is the concept of aphelion, which refers to the point in an orbit where a celestial body, such as a planet or comet, is farthest from the sun. Understanding aphelion is crucial for astronomers and space enthusiasts alike, as it plays a significant role in the study of orbital mechanics and the behavior of celestial bodies.When we consider the Earth’s orbit around the sun, it is not a perfect circle but rather an ellipse, as described by Johannes Kepler's laws of planetary motion. This elliptical shape means that there are points where the Earth is closer to the sun and points where it is farther away. The point at which the Earth is farthest from the sun is known as aphelion. For Earth, this occurs around early July each year, when it is approximately 152 million kilometers away from the sun.The significance of aphelion extends beyond mere distance; it also affects various aspects of life on Earth. For instance, the solar energy received by the Earth varies throughout the year due to its elliptical orbit. During aphelion, the sunlight is slightly less intense than during perihelion, the point in the orbit where the Earth is closest to the sun, which occurs in early January. This variation in solar energy contributes to seasonal changes and impacts climate patterns.Moreover, understanding aphelion is essential for space missions and satellite placements. When launching spacecraft, scientists must take into account the position of the planets and their respective aphelion and perihelion points to ensure successful trajectories. For example, missions to Mars require careful planning to align with the Martian aphelion and perihelion to optimize fuel usage and travel time.In addition to Earth, other planets in our solar system also experience aphelion events. For instance, Mars has a significantly more eccentric orbit than Earth, resulting in a greater difference between its aphelion and perihelion distances. This uniqueness makes Mars a particularly interesting subject for exploration, as its varying distance from the sun influences its climate and potential for supporting life.The study of aphelion is not limited to our solar system; it extends to exoplanets and other celestial bodies. As we discover new planets outside our solar system, understanding their orbits and the concept of aphelion becomes crucial for determining their habitability and potential for supporting life. Scientists use advanced telescopes and observational techniques to measure these distances and analyze the conditions surrounding these distant worlds.In conclusion, the term aphelion encapsulates a key aspect of orbital mechanics and celestial dynamics. Its implications reach far beyond theoretical astronomy, influencing practical applications in space exploration, climate science, and our understanding of the universe. By studying aphelion and its effects, we can gain deeper insights into the intricate dance of celestial bodies and the forces that govern their movements. As we continue to explore the cosmos, the concept of aphelion will undoubtedly remain a critical focal point in our quest for knowledge about the universe we inhabit.

宇宙充满了迷人的现象，这些现象吸引着我们的想象力并扩展了我们对宇宙的理解。其中一个现象是“aphelion”的概念，指的是天体（如行星或彗星）在轨道上距离太阳最远的点。理解aphelion对天文学家和太空爱好者来说至关重要，因为它在轨道力学和天体行为的研究中起着重要作用。当我们考虑地球围绕太阳的轨道时，它不是一个完美的圆形，而是一个椭圆形，如约翰内斯·开普勒的行星运动定律所描述。这种椭圆形状意味着存在距离太阳较近的点和距离较远的点。地球距离太阳最远的点被称为aphelion。对于地球来说，这发生在每年的七月初，此时它距离太阳约1.52亿公里。aphelion的重要性不仅仅在于距离；它还影响地球上生活的各个方面。例如，由于地球的椭圆轨道，地球接收到的太阳能量在一年中会有所变化。在aphelion期间，阳光的强度比在近日点（perihelion）期间稍微弱一些，近日点是地球离太阳最近的点，发生在每年的一月初。这种太阳能量的变化导致季节变化，并影响气候模式。此外，理解aphelion对太空任务和卫星部署至关重要。在发射航天器时，科学家必须考虑行星的位置及其各自的aphelion和近日点，以确保成功的轨迹。例如，前往火星的任务需要仔细规划，以便与火星的aphelion和近日点对齐，从而优化燃料使用和旅行时间。除了地球，太阳系中的其他行星也经历aphelion事件。例如，火星的轨道比地球更偏心，导致其aphelion和近日点之间的距离差异更大。这种独特性使火星成为探索的特别有趣的对象，因为其与太阳的距离变化影响其气候和支持生命的潜力。对aphelion的研究不仅限于我们的太阳系；它扩展到系外行星和其他天体。当我们发现新的太阳系外行星时，理解它们的轨道和aphelion的概念对于确定它们的宜居性和支持生命的潜力至关重要。科学家们使用先进的望远镜和观测技术来测量这些距离并分析这些遥远世界周围的条件。总之，术语aphelion概括了轨道力学和天体动力学的一个关键方面。它的影响远不止理论天文学，在太空探索、气候科学和我们对宇宙的理解等实际应用中也发挥着重要作用。通过研究aphelion及其影响，我们可以更深入地了解天体的复杂运动及其运动规律。随着我们继续探索宇宙，aphelion的概念无疑将继续成为我们对所居住宇宙知识追求的关键焦点。