Altair =αAquilae

简明释义

河鼓二

英英释义

例句

1.In navigation, sailors have used stars like Altair =αAquilae for centuries.

在航海中，水手们几个世纪以来一直使用像Altair =αAquilae这样的星星。

2.In astronomy, we often refer to stars by their Bayer designation, such as Altair =αAquilae.

在天文学中，我们常通过拜耳命名法来称呼星星，比如Altair =αAquilae。

3.The brightness of Altair =αAquilae makes it one of the easiest stars to identify.

由于其亮度，Altair =αAquilae是最容易识别的星星之一。

4.The constellation Aquila is home to many bright stars, including Altair =αAquilae.

鹰座包含许多明亮的星星，包括Altair =αAquilae。

5.When stargazing, you might spot Altair =αAquilae in the summer sky.

在观星时，你可能会在夏季的天空中看到Altair =αAquilae。

作文

The night sky has always fascinated humanity, serving as a canvas for our imaginations and a source of scientific inquiry. Among the countless stars that twinkle above us, one shines particularly bright, capturing the attention of stargazers and astronomers alike: Altair. Known scientifically as Altair =αAquilae, this star is not only significant in terms of its brightness but also in its position within the constellation Aquila, the Eagle. In this essay, I will explore the characteristics of Altair, its cultural significance, and its role in astronomy.Altair is located approximately 16.7 light-years away from Earth, making it one of the closest stars to our solar system. It is the 12th brightest star in the night sky, with an apparent magnitude of 0.77. This makes it easily visible to the naked eye, even in urban areas with light pollution. Altair is classified as a type A main-sequence star, which means it is hot and luminous, with a surface temperature of around 7,500 Kelvin. This high temperature gives Altair its brilliant white color, distinguishing it from the warmer yellowish hues of stars like our Sun.In addition to its physical properties, Altair =αAquilae holds a special place in various cultures and mythologies. In ancient Arabic astronomy, Altair was known as "Al-Nasr al-Tair," meaning "the flying eagle." This name reflects its position in the constellation Aquila, which represents the eagle in Greek mythology. The star has been a point of reference for navigators and travelers throughout history, guiding them across vast oceans and deserts.Moreover, Altair is part of the famous Summer Triangle, along with two other prominent stars: Vega and Deneb. This asterism is prominent in the northern hemisphere during the summer months and serves as a useful tool for amateur astronomers to locate other celestial objects. The Summer Triangle has also inspired countless stories and artistic expressions, further embedding Altair into our cultural fabric.From an astronomical perspective, Altair =αAquilae is particularly interesting due to its rapid rotation. It spins on its axis at an astonishing rate, completing a full rotation approximately every 9 hours. This rapid rotation causes the star to have an oblate shape, meaning it is flattened at the poles and bulging at the equator. Such characteristics provide valuable insights into stellar dynamics and evolution, helping astronomers understand how stars like Altair evolve over time.In recent years, advancements in technology have allowed astronomers to study Altair more closely. Observations using interferometry have revealed details about its atmosphere and surrounding environment. These studies contribute to a broader understanding of stellar formation and behavior, highlighting the importance of Altair in the field of astrophysics.In conclusion, Altair =αAquilae is more than just a bright star in the night sky; it is a symbol of human curiosity and exploration. Its physical characteristics, cultural significance, and role in astronomy make it a fascinating subject of study. As we continue to look up at the stars, Altair serves as a reminder of our place in the universe and the mysteries that await our discovery.

夜空一直以来都吸引着人类，成为我们想象的画布和科学探究的源泉。在无数闪烁的星星中，有一颗特别明亮的星星，吸引了天文爱好者和天文学家的注意：Altair。科学上称为Altair =αAquilae，这颗星星不仅因其亮度而重要，还因其在鹰座（Aquila）中的位置而显得尤为突出。在这篇文章中，我将探讨Altair的特性、文化意义以及它在天文学中的角色。Altair距离地球大约16.7光年，是离我们太阳系最近的星星之一。它是夜空中第12亮的星星，视星等为0.77。这使得它即使在光污染严重的城市地区也很容易被肉眼看到。Altair被分类为A型主序星，这意味着它热且发光，表面温度约为7500开尔文。这个高温赋予了Altair明亮的白色，与像我们的太阳那样温暖的黄色星星形成鲜明对比。除了物理特性外，Altair =αAquilae在各种文化和神话中也占有特殊的地位。在古代阿拉伯天文学中，Altair被称为“Al-Nasr al-Tair”，意为“飞翔的鹰”。这个名字反映了它在鹰座中的位置，代表着希腊神话中的鹰。这颗星星在历史上一直是航海者和旅行者的参考点，引导他们穿越广袤的海洋和沙漠。此外，Altair是著名的夏季三角形的一部分，与另外两颗显著的星星Vega和Deneb一起。这一星群在北半球的夏季月份非常显眼，是业余天文学家定位其他天体的有用工具。夏季三角形也激发了无数故事和艺术表达，使Altair进一步融入我们的文化结构。从天文学的角度来看，Altair =αAquilae因其快速旋转而特别有趣。它以惊人的速度自转，大约每9小时完成一次完整的旋转。这种快速旋转导致这颗星星呈现扁平的形状，意味着它在极地处扁平，而在赤道处隆起。这些特征为我们提供了有关恒星动力学和演化的宝贵见解，帮助天文学家理解像Altair这样的恒星如何随着时间的推移而演变。近年来，技术的进步使天文学家能够更仔细地研究Altair。使用干涉测量法的观测揭示了关于其大气和周围环境的细节。这些研究为我们对恒星形成和行为的更广泛理解做出了贡献，突显了Altair在天体物理学领域的重要性。总之，Altair =αAquilae不仅仅是夜空中一颗明亮的星星；它是人类好奇心和探索精神的象征。它的物理特性、文化意义以及在天文学中的角色使其成为一个引人入胜的研究主题。当我们继续仰望星空时，Altair提醒着我们在宇宙中的位置以及等待我们发现的奥秘。