celestial coordinates

简明释义

天球坐标

英英释义

例句

1.The telescope's software converts celestial coordinates into angles for precise tracking.

望远镜的软件将天球坐标转换为精确跟踪的角度。

2.In astrophotography, knowing the celestial coordinates of a target helps in planning the shoot.

在天文摄影中，了解目标的天球坐标有助于规划拍摄。

3.Astronomers use celestial coordinates to pinpoint the location of stars in the night sky.

天文学家使用天球坐标来确定夜空中星星的位置。

4.The app displays the celestial coordinates of planets visible tonight.

该应用程序显示今晚可见行星的天球坐标。

5.Navigators rely on celestial coordinates to find their way at sea.

航海者依靠天球坐标在海上找到方向。

作文

The universe is a vast and complex place, filled with countless stars, planets, and galaxies. To navigate this immense expanse, astronomers have developed various systems to locate celestial objects. One of the most fundamental systems used in astronomy is known as celestial coordinates. This system allows astronomers to specify the position of celestial bodies in the sky, much like geographic coordinates do for locations on Earth.The concept of celestial coordinates can be understood through two primary components: right ascension and declination. Right ascension is akin to longitude on Earth, measuring how far an object is east or west of a reference point, specifically the vernal equinox. It is usually expressed in hours, minutes, and seconds. On the other hand, declination is similar to latitude, indicating how far north or south an object is from the celestial equator. Declination is measured in degrees, with positive values indicating northern positions and negative values indicating southern positions.Together, these two measurements form a coordinate system that allows for precise identification of any celestial object. For instance, the coordinates for the star Betelgeuse are approximately 5h 55m 10s right ascension and +7° 24′ 25″ declination. This means that if an observer knows their location and the time, they can easily find Betelgeuse in the night sky.Understanding celestial coordinates is crucial for various fields of study, including navigation, astrophysics, and even space exploration. Historically, sailors relied on the stars for navigation, using their knowledge of the night sky to chart their course across the oceans. Today, modern technology has made this process easier, but the fundamental principles of celestial coordinates remain the same.In addition to aiding in navigation, celestial coordinates are essential for astronomers when conducting observations and making discoveries. Telescopes are often equipped with computerized systems that utilize these coordinates to track objects across the sky. When a new comet or asteroid is discovered, astronomers will quickly assign celestial coordinates to it, allowing other researchers to observe and study it further.Moreover, the significance of celestial coordinates extends beyond our solar system. As we explore distant galaxies and exoplanets, the need for a universal coordinate system becomes increasingly important. By employing celestial coordinates, scientists can communicate their findings effectively, ensuring that everyone is referring to the same celestial objects regardless of their location on Earth.In conclusion, the system of celestial coordinates serves as a vital tool for understanding and navigating the cosmos. With its roots in ancient navigation and its applications in modern astronomy, this coordinate system continues to play a critical role in our exploration of the universe. Whether you are an amateur stargazer or a professional astronomer, grasping the concept of celestial coordinates is essential for appreciating the beauty and complexity of the night sky.

宇宙是一个广阔而复杂的地方，充满了无数的星星、行星和星系。为了在这片浩瀚的空间中导航，天文学家开发了多种系统来定位天体。其中一个最基本的系统被称为天体坐标。这个系统允许天文学家指定天空中天体的位置，就像地理坐标用于地球上的位置一样。天体坐标的概念可以通过两个主要组成部分来理解：赤经和赤纬。赤经类似于地球上的经度，测量一个物体距离参考点（具体来说是春分点）有多远，向东或向西。它通常以小时、分钟和秒表示。另一方面，赤纬类似于纬度，指示一个物体距离天球赤道的南北位置。赤纬以度数为单位测量，正值表示北部位置，负值表示南部位置。这两个测量值共同形成了一个坐标系统，使得能够精确识别任何天体。例如，猎户座的肩星贝塔星的坐标大约是赤经5小时55分钟10秒，赤纬+7°24′25″。这意味着，如果观察者知道他们的位置和时间，他们就可以轻松地在夜空中找到贝塔星。理解天体坐标对于包括导航、天体物理学甚至太空探索在内的各种研究领域至关重要。历史上，水手们依靠星星进行导航，通过对夜空的知识来制定穿越海洋的航线。今天，现代科技使这一过程变得更加简单，但天体坐标的基本原理仍然保持不变。除了帮助导航外，天体坐标对于天文学家在进行观测和发现时也至关重要。望远镜通常配备计算机系统，利用这些坐标跟踪天空中的物体。当发现新的彗星或小行星时，天文学家会迅速给它分配天体坐标，使其他研究人员能够进一步观察和研究。此外，天体坐标的重要性超越了我们的太阳系。随着我们探索遥远的星系和系外行星，对一个通用坐标系统的需求变得越来越重要。通过采用天体坐标，科学家们可以有效地交流他们的发现，确保无论他们在地球上的哪个位置，每个人都在提到同样的天体。总之，天体坐标系统作为理解和导航宇宙的重要工具。它源于古代导航，并在现代天文学中发挥着作用，这一坐标系统继续在我们探索宇宙的过程中扮演着关键角色。无论你是业余天文爱好者还是专业天文学家，掌握天体坐标的概念对于欣赏夜空的美丽和复杂性都是必不可少的。