在线英语听力室

Scientists Release Image of Gas Cloud from Star’s Explosion

时间：2022-11-11 03:28:03

搜索关注在线英语听力室公众号：tingroom，领取免费英语资料大礼包。

（单词翻译）

The European Southern Observatory1 on Monday released an image of colorful clouds of gas created by the explosion of a huge star long ago.

The clouds are in our own Milky2 Way galaxy3 about 800 light years from Earth. A light year is the distance light travels in a year, 9.5 trillion kilometers. Scientists estimate that the star was at least eight times the mass of the sun.

The area of the colorful cloud is about 600 times the size of our own solar system.

The image shows the pink and orange filament4 structures of the cloud. Filaments5 are like very thin strings6 such as silk or the strings of a spider's web.

The cloud was created by the star's explosion, called a supernova.

In a supernova, a large star collapses7 onto its core or center. The pressure and temperature at the core become so high that atoms of heavier elements are formed, and huge amounts of energy are released in a massive explosion. A supernova can also produce very heavy elements such as iron, gold or uranium.

Bruno Leibundgut is an astronomer8 connected with the European Southern Observatory (ESO). He explained that denser10 areas of material from the supernova hit surrounding gas and created some of the filaments seen in the image.

He said, "Most of the material that shines is due to hydrogen atoms that are excited. The beauty of such images is that we can directly see what material was inside a star."

The image shows the cloud, called a nebula11, about 11,000 years after the explosion.

What is left of the supernova is a small, very dense9 spinning object called a pulsar. The pulsar spins about 10 times per second.

The picture of the cloud is a combination of many images taken by the VLT Survey telescope in Chile. The telescope uses a camera with filters to capture light of different colors. The data for the image was collected from 2013 to 2016, the ESO said.

Words in This Story

filament –n. a material that appears long and very thin like a hair

silk –n. a material that comes from silkworms and is manufactured into cloth

core –n. the central part of something

due to –prep. as a result of

spin –v. to go around

filter –n. a device that admits a substance but not others


分享到：


点击收听单词发音收听单词发音  

1 observatory hRgzP     
n.天文台，气象台，瞭望台，观测台
参考例句：
  • Guy's house was close to the observatory.盖伊的房子离天文台很近。
  • Officials from Greenwich Observatory have the clock checked twice a day.格林威治天文台的职员们每天对大钟检查两次。
2 milky JD0xg     
adj.牛奶的，多奶的；乳白色的
参考例句：
  • Alexander always has milky coffee at lunchtime.亚历山大总是在午餐时喝掺奶的咖啡。
  • I like a hot milky drink at bedtime.我喜欢睡前喝杯热奶饮料。
3 galaxy OhoxB     
n.星系；银河系；一群(杰出或著名的人物)
参考例句：
  • The earth is one of the planets in the Galaxy.地球是银河系中的星球之一。
  • The company has a galaxy of talent.该公司拥有一批优秀的人才。
4 filament sgCzj     
n.细丝；长丝；灯丝
参考例句：
  • The source of electrons in an electron microscope is a heated filament.电子显微镜中的电子源，是一加热的灯丝。
  • The lack of air in the bulb prevents the filament from burning up.灯泡内缺乏空气就使灯丝不致烧掉。
5 filaments 82be78199276cbe86e0e8b6c084015b6     
n.（电灯泡的）灯丝( filament的名词复数 )；丝极；细丝；丝状物
参考例句：
  • Instead, sarcomere shortening occurs when the thin filaments'slide\" by the thick filaments. 此外，肌节的缩短发生于细肌丝沿粗肌丝“滑行”之际。 来自辞典例句
  • Wetting-force data on filaments of any diameter and shape can easily obtained. 各种直径和形状的长丝的润湿力数据是易于测量的。 来自辞典例句
6 strings nh0zBe     
n.弦
参考例句：
  • He sat on the bed,idly plucking the strings of his guitar.他坐在床上，随意地拨着吉他的弦。
  • She swept her fingers over the strings of the harp.她用手指划过竖琴的琴弦。
7 collapses 9efa410d233b4045491e3d6f683e12ed     
折叠( collapse的第三人称单数 )； 倒塌； 崩溃； （尤指工作劳累后）坐下
参考例句：
  • This bridge table collapses. 这张桥牌桌子能折叠。
  • Once Russia collapses, the last chance to stop Hitler will be gone. 一旦俄国垮台，抑止希特勒的最后机会就没有了。
8 astronomer DOEyh     
n.天文学家
参考例句：
  • A new star attracted the notice of the astronomer.新发现的一颗星引起了那位天文学家的注意。
  • He is reputed to have been a good astronomer.他以一个优秀的天文学者闻名于世。
9 dense aONzX     
a.密集的，稠密的，浓密的；密度大的
参考例句：
  • The general ambushed his troops in the dense woods. 将军把部队埋伏在浓密的树林里。
  • The path was completely covered by the dense foliage. 小路被树叶厚厚地盖了一层。
10 denser denser     
adj. 不易看透的, 密集的, 浓厚的, 愚钝的
参考例句：
  • The denser population necessitates closer consolidation both for internal and external action. 住得日益稠密的居民，对内和对外都不得不更紧密地团结起来。 来自英汉非文学 - 家庭、私有制和国家的起源
  • As Tito entered the neighbourhood of San Martino, he found the throng rather denser. 蒂托走近圣马丁教堂附近一带时，发现人群相当密集。
11 nebula E55zw     
n.星云，喷雾剂
参考例句：
  • A powerful telescope can resolve a nebula into stars.一架高性能的望远镜能从星云中分辨出星球来。
  • A nebula is really a discrete mass of innumerous stars.一团星云实际上是无数星体不连续的集合体。

本文本内容来源于互联网抓取和网友提交，仅供参考，部分栏目没有内容，如果您有更合适的内容，欢迎 点击提交 分享给大家。