cosmic background radiation

简明释义

宇宙背景辐射

英英释义

例句

1.The temperature fluctuations in cosmic background radiation help us map the structure of the universe.

在宇宙背景辐射中的温度波动帮助我们绘制宇宙的结构。

2.The discovery of cosmic background radiation provided strong evidence for the Big Bang theory.

对宇宙背景辐射的发现为大爆炸理论提供了有力证据。

3.Scientists believe that cosmic background radiation is a remnant from the early universe.

科学家认为宇宙背景辐射是早期宇宙的残余。

4.Satellite missions have been launched to measure cosmic background radiation with high precision.

已经发射卫星任务，以高精度测量宇宙背景辐射。

5.Astronomers study the cosmic background radiation to understand the origins of the universe.

天文学家研究宇宙背景辐射以理解宇宙的起源。

作文

The universe is a vast and mysterious place, filled with phenomena that challenge our understanding of physics and cosmology. One of the most significant discoveries in this field is the cosmic background radiation, which provides crucial evidence about the origins of the universe. This faint glow of microwave radiation permeates the entire cosmos and is a remnant from the Big Bang, the event that marked the beginning of our universe approximately 13.8 billion years ago.Understanding cosmic background radiation is essential for several reasons. Firstly, it serves as a snapshot of the early universe. When the universe was just a fraction of a second old, it was incredibly hot and dense. As it expanded, it cooled down, allowing protons and electrons to combine and form neutral hydrogen atoms. This process, known as recombination, occurred about 380,000 years after the Big Bang. The release of photons during this time created what we now detect as cosmic background radiation. These photons have been traveling through space ever since, providing us with a glimpse into the conditions that existed in the early universe.Secondly, the study of cosmic background radiation has profound implications for our understanding of cosmology. The uniformity of this radiation across the sky suggests that the universe is isotropic and homogeneous on large scales. However, tiny fluctuations in temperature within this radiation reveal the seeds of all current structures in the universe, such as galaxies and clusters of galaxies. By analyzing these fluctuations, scientists can gain insights into the distribution of matter in the universe and the processes that led to the formation of large-scale structures.Moreover, cosmic background radiation has provided strong evidence for the theory of inflation, which posits that the universe underwent a rapid expansion immediately after the Big Bang. This theory helps explain the uniformity of the radiation and the existence of the small fluctuations observed. The analysis of cosmic background radiation has led to significant advancements in our understanding of dark matter and dark energy, two components that constitute a large portion of the universe's total mass-energy content.In addition to its scientific significance, cosmic background radiation also captivates the imagination of many. It is a reminder of our cosmic origins and the incredible journey that our universe has undergone since its inception. The fact that we can detect this ancient radiation with modern technology connects us to the very beginnings of time itself. It is a testament to human curiosity and our relentless pursuit of knowledge about the cosmos.In conclusion, cosmic background radiation is not merely a scientific concept; it is a gateway to understanding the universe's history and structure. Its discovery has opened new avenues of research and has deepened our comprehension of fundamental questions regarding the nature of existence. As we continue to explore the universe, cosmic background radiation will undoubtedly remain a key focus, guiding us toward new revelations about the cosmos and our place within it.

宇宙是一个广阔而神秘的地方，充满了挑战我们物理学和宇宙学理解的现象。在这个领域中，最重要的发现之一是宇宙微波背景辐射，它为宇宙起源提供了关键证据。这种微弱的微波辐射遍布整个宇宙，是大爆炸的遗迹，这一事件标志着我们宇宙大约138亿年前的开始。理解宇宙微波背景辐射至关重要，原因有很多。首先，它作为早期宇宙的快照。当宇宙仅仅存在几分之一秒时，它是极其炽热和密集的。随着宇宙的膨胀，它逐渐冷却，使质子和电子结合形成中性氢原子。这个过程被称为再组合，发生在大爆炸后大约38万年。此时释放的光子创造了我们现在探测到的宇宙微波背景辐射。这些光子自那时起一直在宇宙中传播，为我们提供了早期宇宙条件的快照。其次，研究宇宙微波背景辐射对我们理解宇宙学具有深远的影响。这种辐射在天空中的均匀性表明，宇宙在大尺度上是各向同性和均匀的。然而，这种辐射中温度的微小波动揭示了当前宇宙中所有结构的种子，例如星系和星系团。通过分析这些波动，科学家可以获得关于宇宙中物质分布和导致大尺度结构形成过程的见解。此外，宇宙微波背景辐射为膨胀理论提供了强有力的证据，该理论认为宇宙在大爆炸后立即经历了快速膨胀。这一理论帮助解释了辐射的均匀性以及观察到的小波动的存在。对宇宙微波背景辐射的分析推动了我们对暗物质和暗能量的理解，这两者构成了宇宙总质量能量的一大部分。除了科学意义外，宇宙微波背景辐射也吸引了许多人的想象。它提醒我们宇宙的起源以及宇宙自诞生以来经历的不可思议的旅程。我们能够用现代技术探测到这种古老辐射的事实，将我们与时间的开端紧密相连。这是人类好奇心和我们对宇宙知识不懈追求的见证。总之，宇宙微波背景辐射不仅仅是一个科学概念；它是理解宇宙历史和结构的门户。它的发现开启了新的研究途径，加深了我们对关于存在本质的基本问题的理解。随着我们继续探索宇宙，宇宙微波背景辐射无疑将继续成为一个关键焦点，引导我们向宇宙及我们在其中的位置的新启示。