Dubhe =αUrsa Majoris

简明释义

天枢

英英释义

例句

1.As a second magnitude star, Dubhe = α Ursa Majoris is easily visible to the naked eye.

作为第二亮度的星星，Dubhe = α Ursa Majoris很容易被肉眼看到。

2.In astronomy, we often refer to stars by their Bayer designation, such as Dubhe = α Ursa Majoris.

在天文学中，我们经常用拜耳命名法来指代星星，例如Dubhe = α Ursa Majoris。

3.When locating the Big Dipper, remember that Dubhe = α Ursa Majoris is one of its key stars.

在寻找北斗七星时，请记住Dubhe = α Ursa Majoris是其中一颗重要的星星。

4.Astronomers use Dubhe = α Ursa Majoris to help identify the position of other stars in the constellation.

天文学家使用Dubhe = α Ursa Majoris来帮助识别星座中其他星星的位置。

5.During our stargazing session, I pointed out Dubhe = α Ursa Majoris to my friends.

在我们的观星活动中，我向朋友们指出了Dubhe = α Ursa Majoris。

作文

In the vast expanse of the night sky, countless stars twinkle and shimmer, each telling its own story. Among these celestial bodies, one star stands out not only for its brightness but also for its significance in astronomy: Dubhe = α Ursa Majoris. This phrase encapsulates the identity of Dubhe as the alpha star in the constellation Ursa Major, or the Great Bear. Understanding this phrase requires a deeper exploration into the realms of astronomy and the cultural significance of constellations.Dubhe is located approximately 123 light-years away from Earth and is classified as a giant star. Its name derives from the Arabic word 'dubb', which means bear, reflecting its connection to the constellation it resides in. As the alpha star, Dubhe = α Ursa Majoris signifies that it is the brightest star in Ursa Major, making it a point of reference for stargazers and navigators alike. The star's luminosity and position in the sky have made it an essential marker for locating other stars and constellations.The constellation Ursa Major itself is one of the most recognized patterns in the night sky, often referred to as the Big Dipper in North America. This asterism consists of seven main stars, with Dubhe being the second star in the 'bowl' of the dipper. The shape of the Big Dipper has been a guide for travelers for centuries, serving as a tool for navigation. By following the line created by the two stars at the end of the dipper’s bowl, one can find Polaris, the North Star, which is crucial for determining direction in the Northern Hemisphere.The significance of Dubhe = α Ursa Majoris extends beyond navigation; it also plays a vital role in various cultures and mythologies. In ancient times, the stars were often linked to stories and legends that shaped human understanding of the cosmos. For instance, in Greek mythology, Ursa Major is associated with the story of Callisto, a nymph who was transformed into a bear and later placed among the stars by Zeus. This narrative reflects humanity's long-standing fascination with the stars and their ability to inspire wonder and curiosity.In modern astronomy, Dubhe is not just a point of light; it is a subject of study. Scientists analyze its properties, such as temperature, mass, and chemical composition, to gain insights into stellar evolution. Dubhe is also part of a binary star system, meaning it has a companion star that orbits around it. This relationship provides valuable information about the dynamics of star systems and the life cycles of stars.Moreover, the study of stars like Dubhe contributes to our understanding of the universe's structure and the formation of galaxies. By observing the light emitted from Dubhe, astronomers can gather data on its age and the processes that have shaped it over millions of years. This research not only enhances our knowledge of individual stars but also informs our understanding of the broader cosmos.In conclusion, the phrase Dubhe = α Ursa Majoris serves as a gateway to exploring the wonders of the universe. It symbolizes the beauty and complexity of the night sky and reminds us of the rich tapestry of stories woven into the fabric of our understanding of astronomy. As we gaze up at the stars, let us remember the significance of Dubhe and the countless other stars that illuminate our skies, guiding us through the darkness and inspiring future generations to look up and dream.

在浩瀚的夜空中，无数星星闪烁着光芒，每颗星星都讲述着自己的故事。在这些天体中，有一颗星星因其亮度和在天文学中的重要性而脱颖而出：Dubhe = α Ursa Majoris。这个短语概括了Dubhe作为大熊座（Ursa Major）中的α星的身份。理解这个短语需要深入探讨天文学的领域以及星座的文化意义。Dubhe距离地球约123光年，被归类为巨星。它的名字源于阿拉伯语“dubb”，意为熊，反映了它与所在星座的联系。作为α星，Dubhe = α Ursa Majoris意味着它是大熊座中最亮的星星，使其成为观星者和导航者的重要参考点。星星的亮度和在天空中的位置使其成为定位其他星星和星座的基本标志。大熊座本身是夜空中最容易识别的图案之一，在北美常被称为大勺子。这个星群由七颗主要星星组成，Dubhe是勺子“碗”中的第二颗星。大勺子的形状在几个世纪以来一直是旅行者的指南，作为导航工具。通过沿着勺子碗末端的两颗星星所形成的线，可以找到北极星，这是确定北半球方向的关键。Dubhe = α Ursa Majoris的重要性超越了导航；它在各种文化和神话中也扮演着重要角色。在古代，星星常常与塑造人类对宇宙理解的故事和传说联系在一起。例如，在希腊神话中，大熊座与卡利斯托的故事有关，她是一位女神，被变成了一只熊，后来被宙斯放置在星空中。这个叙事反映了人类对星星的长期迷恋，以及它们激发的奇迹和好奇心。在现代天文学中，Dubhe不仅仅是一点光；它是研究的对象。科学家分析其特性，如温度、质量和化学成分，以获得关于恒星演化的见解。Dubhe也是一个双星系统的一部分，这意味着它有一颗伴星绕其运行。这种关系提供了关于恒星系统动态和恒星生命周期的宝贵信息。此外，对像Dubhe这样的恒星的研究有助于我们理解宇宙的结构和星系的形成。通过观察Dubhe发出的光，天文学家可以收集关于其年龄和数百万年来塑造它的过程的数据。这项研究不仅增强了我们对单个恒星的了解，还为我们理解更广泛的宇宙提供了信息。总之，短语Dubhe = α Ursa Majoris是探索宇宙奇观的入口。它象征着夜空的美丽和复杂性，并提醒我们丰富的故事织入了我们对天文学理解的织物中。当我们仰望星空时，让我们记住Dubhe的重要性以及照亮我们天空的无数其他星星，引导我们穿越黑暗，激励未来的世代仰望星空，追寻梦想。