novae

简明释义

英[ˈnəʊviː]美[ˈnovə]

n. （天文）新星（nova 的复数）

英英释义

单词用法

同义词

反义词

例句

1.Shara 's research interests include stellar collisions, novae and supernovae, and the populations of stars that inhabit star clusters and galaxies.

夏拉的研究兴趣包括恒星碰撞、新星与超新星，以及星团和星系内恒星的数目分布。

2.Shara 's research interests include stellar collisions, novae and supernovae, and the populations of stars that inhabit star clusters and galaxies.

夏拉的研究兴趣包括恒星碰撞、新星与超新星，以及星团和星系内恒星的数目分布。

3.Shara's research interests include stellar collisions, novae and supernovae, and the populations of stars that inhabit star clusters and galaxies.

夏拉的研究兴趣包括恒星碰撞、星与超新星，以及星团和星系内恒星的数目分布。

4.The systematic search consists of scanning those regions of the Milky Way galaxy where it is believed that most novae are likely to be observed.

为了系统地搜索新星，该计划搜索那些被认为是在银河系中出现概率较高的区域。

5.Astronomers observed several new novae 新星 in the night sky last week.

天文学家上周观察到夜空中出现了几颗新的novae 新星。

6.The study of novae 新星 helps scientists understand stellar evolution.

对novae 新星的研究帮助科学家理解恒星演化。

7.In ancient times, people often mistook novae 新星 for comets.

在古代，人们常常将novae 新星误认为是彗星。

8.The brightness of novae 新星 can outshine entire galaxies.

novae 新星的亮度可以超越整个星系。

9.Scientists use telescopes to capture images of novae 新星 as they explode.

科学家使用望远镜捕捉novae 新星爆炸时的图像。

作文

In the vast expanse of the universe, there are countless phenomena that captivate our imagination and expand our understanding of the cosmos. Among these phenomena, one of the most fascinating is the occurrence of novae (新星). A nova is a powerful explosion on the surface of a white dwarf star, which leads to a sudden increase in brightness. This event is not only visually stunning but also plays a significant role in the life cycle of stars and the chemical enrichment of the universe. The process behind a nova begins when a white dwarf star, which is the remnant of a star that has exhausted its nuclear fuel, accumulates material from a companion star. This material primarily consists of hydrogen, which, under the right conditions, can ignite in a nuclear fusion reaction. As the hydrogen fuses into helium, it releases an immense amount of energy, causing the star to brighten dramatically. This brightening can make the nova outshine entire galaxies for a short period, often lasting from a few days to several weeks. Historically, novae have played a crucial role in our understanding of stellar evolution. The study of these explosive events has provided astronomers with insights into the life cycles of stars and the processes that govern their behavior. For instance, observing novae allows scientists to gather data about the composition of stars and the dynamics of their explosions. This information is vital for developing models of stellar evolution and understanding the fate of different types of stars. Moreover, novae contribute to the chemical diversity of the universe. When a nova explodes, it ejects material into space, enriching the interstellar medium with heavy elements such as carbon, oxygen, and nitrogen. These elements are essential for the formation of new stars, planets, and even life itself. Thus, novae serve as a bridge between stellar death and the birth of new celestial bodies, highlighting the interconnectedness of all cosmic phenomena. In recent years, advancements in technology have allowed astronomers to observe novae in unprecedented detail. With the help of powerful telescopes and sophisticated imaging techniques, researchers can now study the light curves and spectra of novae, providing valuable information about their distance, brightness, and composition. This data helps scientists refine their models of how novae occur and their impact on the surrounding environment. Additionally, the study of novae has implications beyond astrophysics. Understanding these explosive events can also shed light on fundamental questions about the origins of the universe and the nature of matter and energy. By examining the remnants of novae, scientists can gain insights into the conditions that existed shortly after the Big Bang and how those conditions have shaped the universe we see today. In conclusion, novae are not merely spectacular celestial events; they are vital components of the cosmic ecosystem. Their explosive nature enriches the universe with essential elements, while their study enhances our understanding of stellar evolution and the fundamental processes that govern the cosmos. As we continue to explore the universe, novae will undoubtedly remain a key area of research, revealing the mysteries of the stars and the intricate web of connections that bind all celestial bodies together.

在广袤的宇宙中，有无数现象吸引着我们的想象力，扩展着我们对宇宙的理解。在这些现象中，最迷人的之一就是novae（新星）的出现。Nova是白矮星表面上的一次强烈爆炸，导致亮度突然增加。这一事件不仅在视觉上令人惊叹，而且在恒星的生命周期和宇宙的化学丰度方面发挥着重要作用。 Nova的过程始于白矮星，这是一颗耗尽核燃料的恒星的残骸，它从伴星那里积累物质。这些物质主要由氢组成，在适当条件下，可以在核聚变反应中点燃。当氢转变为氦时，会释放出大量能量，导致恒星亮度急剧增强。这种亮度的增加可以使nova在短时间内超过整个星系的亮度，通常持续几天到几周。 历史上，novae在我们理解恒星演化方面发挥了至关重要的作用。这些爆炸事件的研究为天文学家提供了有关恒星生命周期及其行为的过程的见解。例如，观察novae使科学家能够收集有关恒星组成和爆炸动态的数据。这些信息对于开发恒星演化模型以及理解不同类型恒星的命运至关重要。 此外，novae还为宇宙的化学多样性做出了贡献。当nova爆炸时，它将物质喷射到太空中，丰富了星际介质中的重元素，如碳、氧和氮。这些元素对于新恒星、行星甚至生命的形成至关重要。因此，novae作为恒星死亡与新天体诞生之间的桥梁，突显了所有宇宙现象之间的相互联系。 近年来，技术的进步使天文学家能够以前所未有的细节观察novae。借助强大的望远镜和复杂的成像技术，研究人员现在可以研究novae的光曲线和光谱，提供有关它们的距离、亮度和组成的重要信息。这些数据帮助科学家完善他们对novae发生机制及其对周围环境影响的模型。 此外，对novae的研究也超越了天体物理学的范围。理解这些爆炸事件还可以揭示关于宇宙起源和物质与能量本质的基本问题。通过检查novae的残骸，科学家可以获得关于大爆炸后不久存在的条件的见解，以及这些条件如何塑造了我们今天看到的宇宙。 总之，novae不仅仅是壮观的天体事件；它们是宇宙生态系统的重要组成部分。它们的爆炸性质丰富了宇宙中的基本元素，而它们的研究增强了我们对恒星演化和支配宇宙的基本过程的理解。随着我们继续探索宇宙，novae无疑将仍然是一个关键的研究领域，揭示恒星的奥秘以及将所有天体紧密联系在一起的复杂网络。