exterior planets

简明释义

地外行星

英英释义

例句

1.Studying the exterior planets can reveal clues about the potential for life beyond Earth.

研究外行星可以揭示关于地球以外生命潜力的线索。

2.The study of the exterior planets helps astronomers understand the formation of our solar system.

对外行星的研究帮助天文学家理解我们太阳系的形成。

3.The gravitational pull of the exterior planets affects the orbits of smaller celestial bodies.

外行星的引力影响着较小天体的轨道。

4.The exterior planets are known for their gaseous compositions and large sizes.

由于其气体组成和较大的体积，外行星是众所周知的。

5.NASA's missions often focus on the exterior planets to gather data about their atmospheres.

美国宇航局的任务通常集中在外行星上，以收集有关它们大气的数据。

作文

The solar system is a fascinating realm that consists of various celestial bodies, including the sun, planets, moons, asteroids, and comets. Among these celestial bodies, the planets are categorized into two main groups: terrestrial planets and gas giants. The latter group includes the exterior planets (外行星), which are Jupiter, Saturn, Uranus, and Neptune. These planets are located beyond the asteroid belt and are significantly different from the inner terrestrial planets like Earth and Mars.One of the most intriguing aspects of the exterior planets (外行星) is their size. Unlike the rocky inner planets, the exterior planets (外行星) are predominantly composed of gases and have massive diameters. For instance, Jupiter, the largest planet in our solar system, has a diameter of about 86,881 miles (139,822 kilometers). This immense size allows it to contain more than twice the mass of all the other planets combined. Saturn, known for its stunning rings, is also a giant, with a diameter of approximately 72,367 miles (116,464 kilometers).The composition of the exterior planets (外行星) further distinguishes them from their terrestrial counterparts. They are primarily made up of hydrogen and helium, along with traces of other elements such as methane, ammonia, and water vapor. This gaseous makeup contributes to their lack of a solid surface, making them unique in terms of planetary structure. For example, if one were to attempt to land on Jupiter, they would find themselves sinking into the thick atmosphere rather than landing on solid ground.Another remarkable feature of the exterior planets (外行星) is their extensive systems of moons. Jupiter alone boasts over 79 known moons, including the four largest, known as the Galilean moons: Io, Europa, Ganymede, and Callisto. Each of these moons presents its own unique characteristics and potential for exploration. For instance, Europa is believed to harbor a subsurface ocean beneath its icy crust, raising questions about the possibility of extraterrestrial life.The exterior planets (外行星) also exhibit complex ring systems, with Saturn's being the most prominent. These rings are composed of ice particles, rocky debris, and dust, creating a stunning visual display that has captivated astronomers and space enthusiasts alike. The study of these rings and their formation provides valuable insights into the history and evolution of our solar system.In addition to their physical characteristics, the exterior planets (外行星) play a crucial role in our understanding of planetary science. Their massive gravitational fields influence the orbits of nearby celestial bodies and help maintain the stability of the solar system. Furthermore, studying these distant giants can shed light on the formation of planetary systems beyond our own, offering clues about how other stars and their planets evolve over time.In conclusion, the exterior planets (外行星) are a captivating subject of study within the field of astronomy. Their vast sizes, unique compositions, extensive moon systems, and intricate ring structures make them stand out in our solar system. As we continue to explore these distant worlds, we gain a deeper understanding of the universe and our place within it. The mysteries of the exterior planets (外行星) invite us to look beyond our own planet and ponder the possibilities that lie beyond the stars.

太阳系是一个迷人的领域，包含各种天体，包括太阳、行星、卫星、小行星和彗星。在这些天体中，行星分为两大类：类地行星和气体巨星。后者包括外行星（exterior planets），即木星、土星、天王星和海王星。这些行星位于小行星带之外，与地球和火星等类地行星有显著不同。外行星（exterior planets）最引人注目的方面之一是它们的大小。与岩石类内行星不同，外行星（exterior planets）主要由气体组成，直径巨大。例如，木星是我们太阳系中最大的行星，直径约为86,881英里（139,822公里）。这个巨大的体积使其质量超过所有其他行星的总和的两倍。以其壮观的环而闻名的土星也是一颗巨大的行星，直径约为72,367英里（116,464公里）。外行星（exterior planets）的组成进一步使其与类地行星区分开来。它们主要由氢和氦组成，还有少量其他元素如甲烷、氨和水蒸气。这种气体构成使它们缺乏坚固的表面，在行星结构上具有独特性。例如，如果有人试图在木星上着陆，他们会发现自己沉入厚厚的大气层，而不是落在坚实的地面上。外行星（exterior planets）另一个显著特征是它们庞大的卫星系统。仅木星就拥有79颗已知卫星，其中四颗最大卫星被称为伽利略卫星：伊欧、欧罗巴、甘尼美德和卡利斯托。这些卫星各具独特特征，具有探索的潜力。例如，欧罗巴被认为在其冰壳下藏有一个地下海洋，引发了关于外星生命可能性的疑问。外行星（exterior planets）还展示了复杂的环系统，其中土星的环最为显著。这些环由冰粒、岩石碎片和尘埃组成，形成了一个令人惊叹的视觉展示，吸引了天文学家和太空爱好者的目光。对这些环及其形成的研究为我们提供了关于太阳系历史和演化的宝贵见解。除了它们的物理特征，外行星（exterior planets）在我们理解行星科学中起着至关重要的作用。它们巨大的引力场影响附近天体的轨道，并帮助维持太阳系的稳定。此外，研究这些遥远的巨星可以揭示我们自身以外的行星系统的形成，提供关于其他恒星及其行星如何随时间演变的线索。总之，外行星（exterior planets）是天文学研究中的一个迷人主题。它们巨大的体积、独特的组成、广泛的卫星系统和复杂的环结构使它们在我们的太阳系中脱颖而出。随着我们继续探索这些遥远的世界，我们对宇宙及我们在其中的位置有了更深入的理解。外行星（exterior planets）的奥秘邀请我们超越自己的星球，思考星星之外的可能性。