astrometry
简明释义
n. [天] 天体测量学；天体测定
英英释义
Astrometry is the branch of astronomy that involves precise measurements of the positions and movements of celestial objects. | 天体测量学是天文学的一个分支，涉及对天体的位置和运动的精确测量。 |
单词用法
天体测量数据 | |
天体测量技术 | |
天体测量观测 | |
精确天体测量 | |
绝对天体测量 | |
相对天体测量 |
同义词
反义词
| 天体物理学 | Astrophysics studies the physical properties and behavior of celestial bodies. | 天体物理学研究天体的物理特性和行为。 | |
| 宇宙学 | Cosmology explores the origins and evolution of the universe. | 宇宙学探讨宇宙的起源和演化。 |
例句
1.If the astrometry is to be done from an artificial satellite, then the result could be obtained more quickly and accurately. This is the special advantage of the Hipparcos method of astrometry fro...
从人造卫星上进行这种天体测量，那就又快又精确，这就是依巴谷空间测量卫星的特点。
2.Visual position measurements in astrometry are most affected.
天体测量学中视位置的测量受影响最大。
3.The Earth's rotation and revolution Movement was originally astrometry and ground studies of common research topics, but the methods and goals of different.
地球的自转运动和公转运动本来就是天体测量学和地学共同的研究课题，但方法和目的有所不同。
4.The ESA astrometry satellite HIPPARCOS will be launched in the first part of 1988 or later.
欧洲空间局专门用作空间天体测量的伊巴谷卫星将于1988年上半年发射。
5.The planet, called VB 10b, was discovered using astrometry, a method inwhich the wobble induced by a planet on its star is measured preciselyon the sky.
这颗行星，VB10b，是用天体测量学的方法，精确测量它的恒星在空中的受迫摆动而发现的。
6.If the astrometry is to be done from an artificial satellite, then the result could be obtained more quickly and accurately. This is the special advantage of the Hipparcos method of astrometry fro...
从人造卫星上进行这种天体测量，那就又快又精确，这就是依巴谷空间测量卫星的特点。
7.The defects of main detector, Imange Dissector Tube (IDT), in HIPPARCOS Space Astrometry Satellite are discussed.
本文分析了依巴谷空间天体测量卫星主探测器析像管和恒星测绘仪的工作缺点；
8.Anomalous refraction is believed to be the main error source for classical astrometry.
反常折射已成为传统天体测量学的主要误差来源。
9.The data gathered from astrometry 天体测量学 can help determine the mass of celestial objects.
从astrometry 天体测量学收集的数据可以帮助确定天体的质量。
10.Advanced astrometry 天体测量学 techniques are essential for understanding the structure of our galaxy.
先进的astrometry 天体测量学技术对理解我们银河系的结构至关重要。
11.Researchers in astrometry 天体测量学 are working to refine the measurements of exoplanet orbits around distant stars.
在astrometry 天体测量学领域，研究人员正在努力完善遥远恒星周围系外行星轨道的测量。
12.The European Space Agency's Gaia mission is a landmark project in astrometry 天体测量学 aimed at mapping the Milky Way.
欧洲航天局的Gaia任务是一个在astrometry 天体测量学领域的里程碑项目，旨在绘制银河系的地图。
13.The new telescope will significantly improve our capabilities in astrometry 天体测量学, allowing us to measure the positions of stars with unprecedented accuracy.
这台新望远镜将显著提升我们在astrometry 天体测量学方面的能力，使我们能够以空前的精确度测量星星的位置。
作文
Astrometry is a branch of astronomy that deals with the measurement of the positions and movements of celestial bodies. This scientific discipline plays a crucial role in our understanding of the universe, as it helps astronomers to determine distances, track the motion of stars, and even discover new planets. The term 'astrometry' derives from the Greek words 'astro,' meaning star, and 'metron,' meaning measure. By studying the precise positions of stars and other celestial objects, scientists can gain valuable insights into the dynamics of our galaxy and beyond.One of the primary applications of astrometry (天体测量学) is in the determination of stellar parallax. Parallax is the apparent shift in position of a nearby star against the background of more distant stars as the Earth orbits the Sun. By measuring this shift, astronomers can calculate the distance to the star using simple trigonometry. This method was first successfully applied in the 19th century and provided the first accurate measurements of stellar distances, revolutionizing our understanding of the scale of the universe.Another significant aspect of astrometry (天体测量学) is its role in tracking the movements of celestial bodies. For instance, the orbits of planets, moons, and asteroids can be determined through precise measurements of their positions over time. This information is critical for predicting future positions and understanding gravitational interactions between these bodies. Such knowledge is not only essential for space exploration but also for assessing potential threats from near-Earth objects.In recent years, advancements in technology have greatly enhanced the capabilities of astrometry (天体测量学). The development of highly sensitive telescopes and sophisticated computer algorithms has allowed astronomers to make measurements with unprecedented accuracy. Space missions, such as the European Space Agency's Gaia satellite, are dedicated to mapping the positions of over a billion stars in our galaxy. Gaia's mission is to create the most detailed three-dimensional map of the Milky Way, providing invaluable data for various fields of astrophysics.The implications of astrometry (天体测量学) extend beyond mere measurements; they also contribute to our understanding of fundamental questions about the universe. For example, by studying the positions and movements of stars, astronomers can infer the presence of dark matter, an elusive substance that makes up a significant portion of the universe's mass. Additionally, astrometry (天体测量学) has been instrumental in the search for exoplanets, as variations in the positions of stars can indicate the gravitational influence of orbiting planets.In conclusion, astrometry (天体测量学) is a vital field within astronomy that encompasses the measurement of celestial positions and movements. Its contributions to our understanding of the universe are profound, aiding in the determination of distances, tracking celestial motions, and uncovering the mysteries of dark matter and exoplanets. As technology continues to evolve, the future of astrometry (天体测量学) promises to unveil even more secrets of the cosmos, paving the way for new discoveries and a deeper appreciation of the universe we inhabit.
