Ursa major

简明释义

大熊星座

英英释义

例句

1.In ancient cultures, Ursa Major (大熊座) was associated with various myths and legends.

在古代文化中，Ursa Major（大熊座）与各种神话和传说有关联。

2.Astronomers often study Ursa Major (大熊座) due to its bright stars and rich history.

天文学家经常研究Ursa Major（大熊座），因为它明亮的星星和丰富的历史。

3.The stars of Ursa Major (大熊座) form a distinctive shape that is often used for navigation.

星座Ursa Major（大熊座）的星星形成了一个独特的形状，常用于导航。

4.On clear nights, you can easily spot Ursa Major (大熊座) in the northern sky.

在晴朗的夜晚，你可以轻松地在北方天空中找到Ursa Major（大熊座）。

5.The Big Dipper is part of Ursa Major (大熊座) and is one of the most recognizable asterisms.

大斗柄是Ursa Major（大熊座）的一部分，是最容易识别的星群之一。

作文

The night sky has always been a source of wonder and fascination for humanity. Among the many constellations that adorn the celestial sphere, Ursa Major stands out as one of the most recognizable. Known as the Great Bear, Ursa Major is not only significant in astronomy but also plays a vital role in various cultures and mythologies around the world.Historically, Ursa Major has been used for navigation. The constellation contains the famous Big Dipper asterism, which consists of seven bright stars. This formation has served as a guide for travelers and explorers for centuries. By locating the Big Dipper, one can find the North Star, Polaris, which is situated at the end of the 'handle' of the Dipper. Polaris is almost directly aligned with the Earth's rotational axis, making it a reliable point of reference for those navigating through the Northern Hemisphere.In addition to its practical uses, Ursa Major has rich mythological significance. In Greek mythology, the constellation is associated with the story of Callisto, a nymph who was transformed into a bear by the goddess Artemis. Zeus later placed her in the sky along with her son, Arcas, who became the constellation Bootes. This narrative highlights the deep connection between human stories and the stars, illustrating how ancient civilizations sought to explain their world through the cosmos.Moreover, Ursa Major appears in various cultures beyond Greek mythology. In Native American traditions, different tribes have their interpretations of the constellation. For example, some tribes view the Big Dipper as a great bear being hunted by three hunters, represented by the stars of Orion. Such interpretations show how Ursa Major has inspired creativity and storytelling throughout human history.The scientific study of Ursa Major also reveals fascinating insights about our universe. The stars that comprise this constellation are not all located at the same distance from Earth. They are part of different stellar populations, each with its unique characteristics. The brightest star in Ursa Major, Dubhe, is approximately 123 light-years away, while Merak, another prominent star in the Dipper, is about 79 light-years distant. This diversity among the stars provides astronomers with valuable information about stellar evolution and the structure of our galaxy.As we continue to explore the universe, Ursa Major remains a symbol of human curiosity and exploration. Its presence in the night sky serves as a reminder of our connection to the cosmos and the stories that bind us together as a species. Whether we are gazing up at the stars for navigation, inspiration, or scientific inquiry, Ursa Major will always hold a special place in our hearts and minds.In conclusion, Ursa Major is more than just a collection of stars; it is a bridge between the past and the future. It connects us to ancient myths, guides our travels, and invites us to ponder the mysteries of the universe. As we look up at the night sky, let us remember the significance of Ursa Major and the countless stories it has inspired throughout history.

夜空一直是人类奇迹和迷惑的源泉。在装点天球的众多星座中，大熊座作为最易于辨认的星座之一而脱颖而出。大熊座被称为大熊，不仅在天文学上具有重要意义，而且在世界各地的各种文化和神话中也发挥着至关重要的作用。历史上，大熊座曾被用于导航。该星座包含著名的“大斗”星群，由七颗明亮的星星组成。这个星群几个世纪以来一直是旅行者和探险者的指引。通过定位大斗，人们可以找到北极星，即位于斗柄末端的极星。北极星几乎与地球的自转轴直接对齐，使其成为北半球导航者可靠的参考点。除了实用性之外，大熊座在神话上也具有丰富的意义。在希腊神话中，这个星座与卡利斯托的故事相关，她是一位被女神阿尔忒弥斯变成熊的女神。宙斯后来将她与她的儿子阿卡斯一起放置在天空中，后者成为了星座博特斯。这个叙述突显了人类故事与星星之间的深刻联系，展示了古代文明如何通过宇宙来解释他们的世界。此外，大熊座在希腊神话之外的各种文化中也出现。例如，在美洲土著传统中，不同的部落对这个星座有自己的解释。例如，一些部落将大斗视为一只被三位猎人追逐的大熊，而这三位猎人则由猎户座的星星代表。这种解释展示了<大熊座如何激发了人类历史上的创造力和叙事能力。对大熊座的科学研究还揭示了我们宇宙的迷人见解。构成这个星座的星星并不都位于与地球相同的距离。它们属于不同的恒星群体，每个群体都有其独特的特征。大熊座中最亮的星星杜贝距离地球大约123光年，而另一个显著的星星梅拉克则距离大约79光年。这些星星之间的多样性为天文学家提供了有关恒星演化和我们银河系结构的宝贵信息。随着我们继续探索宇宙，大熊座仍然是人类好奇心和探索精神的象征。它在夜空中的存在提醒着我们与宇宙的联系以及将我们作为一个物种结合在一起的故事。无论我们是为了导航、灵感还是科学探究而仰望星空，大熊座总会在我们的心中和思想中占据特殊的位置。总之，大熊座不仅仅是一组星星；它是过去与未来之间的桥梁。它将我们与古老的神话连接在一起，引导我们的旅行，并邀请我们思考宇宙的奥秘。当我们仰望夜空时，让我们铭记大熊座的重要性以及它在历史上激发的无数故事。