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Supermassive Black Holes 超大质量黑洞 - 14

It means that Silk and Ree's theory may be right and if it is also right that supermassive black holes helped trigger star formation, then it must mean that all giant black holes and their galaxies ar

发表于:2018-12-07 / 阅读(276) / 评论(0)

超大质量黑洞

Supermassive Black Holes 超大质量黑洞 - 8

In every galaxy scientists looked at, they found evidence for a supermassive black hole. NGC 3115 NGC 3377 NGC 3379 In M31 and M32 In total there is probably 20-30 or so black holes that have been fou

发表于:2018-12-07 / 阅读(368) / 评论(0)

超大质量黑洞

Supermassive Black Holes 超大质量黑洞 - 1

In March 2000, two astronomers made an extraordinary discovery, one that is set to overturn our understanding of how the universe formed. We're never going to see a time like this in astronomy again.

发表于:2018-12-07 / 阅读(371) / 评论(0)

超大质量黑洞

Supermassive Black Holes 超大质量黑洞 - 2

But we are just one in 125 billion galaxies of different shapes and sizes spinning through space. Yet scientists haven't been able to explain how a single one of these galaxies was created. Galaxy for

发表于:2018-12-07 / 阅读(337) / 评论(0)

超大质量黑洞

Supermassive Black Holes 超大质量黑洞 - 4

This ferocious heart of brilliant hot gas is called a quasar. Scientists thought this whirling mass might be caused by a giant black hole sucking up gas and stars, literally feeding on the center of a

发表于:2018-12-07 / 阅读(290) / 评论(0)

超大质量黑洞

VOA慢速英语2011--Blue Holes: Some of the Least Explored Areas on Earth

EXPLORATIONS - Blue Holes: Some of the Least Explored Areas on Earth BARBARA KLEIN: Im Barbara Klein. STEVE EMBER: And Im Steve Ember with EXPLORATIONS in VOA Special English. A blue hole is a flooded sea cave with a hole that opens up at the lands s

发表于:2018-12-07 / 阅读(89) / 评论(0)

2011年VOA慢速英语(十一)月

温馨夜读II PART4 12.18 Holes in His Mind

[00:00.52] 12.18 Holes in His Mind [00:06.29]Major James Nesmeth had a dream of improving his golf game and he developed a unique method of achieving his goal. [00:14.35]Until he devised this method, he was just your average weekend golfer, shooting

发表于:2018-12-26 / 阅读(71) / 评论(0)

温馨夜读II

双语有声阅读:Black Holes 黑洞

What is a black hole? Well, it's difficult to answer this question, since the terms we would normally use to describe a scientific phenomenon are inadequate here. Astronomers and scientists think that a black hole is a region of space (not a thing) i

发表于:2019-01-02 / 阅读(62) / 评论(0)

双语有声阅读

Supermassive Black Holes 超大质量黑洞 - 10

If, as it now seems, every single galaxy has a black hole at its heart, this can't be a coincidence. Perhaps black holes are an essential part of what galaxies are and how they work. No one had expect

发表于:2019-01-02 / 阅读(360) / 评论(0)

超大质量黑洞

电影歌曲:Supermassive Black Holes Muse

Supermassive Black Holes Muse oh baby dont you know i suffer? oh baby can you hear me moan? you caught me under false pretences how long before you let me go? you set my soul alight you set my soul alight (you set my soul alight) glaciers melting in

发表于:2019-01-03 / 阅读(94) / 评论(0)

电影歌曲

Lesson 74 - THROW ONE'S HAT IN THE RING / GO ON THE STUMP

to throw one's hat in the ring to go on the stump 在竞选的第一个阶段，那些认为自己有资格当总统的人经过多方考虑后作出决定究竟参不参加这次总统竞选。美国人

发表于:2019-01-04 / 阅读(123) / 评论(0)

美国习惯用语

SCIENCE IN THE NEWS - Stephen Hawking and Black Holes / Quan

SCIENCE IN THE NEWS - Stephen Hawking and Black Holes / Quantum Theory By Caty Weaver Broadcast: Tuesday, August 17, 2004 VOICE ONE: This is SCIENCE IN THE NEWS, in VOA Special English. I'm Bob Dought

发表于:2019-01-07 / 阅读(101) / 评论(0)

科技之光

2005年NPR美国国家公共电台十一月-Stumps of the Northwest: History, Old an

....leftovers from an era gone-by. In the mid to late 1800s, logging was a way of life in the Pacific Northwest. Loggers made vast fortunes chopping the virgin forest filled with giant trees that were thousands of years old. Few old-growth trees are

发表于:2019-01-08 / 阅读(136) / 评论(0)

2005年NPR美国国家公共电台

VOA慢速英语2010年-EXPLORATIONS - Blue Holes: Some of the

BARBARA KLEIN: Im Barbara Klein. STEVE EMBER: And Im Steve Ember with EXPLORATIONS in VOA Special English. A blue hole is a flooded sea cave with a hole that opens up at the lands surface. These cave systems form in carbonate rock, often on islands.

发表于:2019-01-12 / 阅读(107) / 评论(0)

2010年VOA慢速英语(十一)月

New Data Adds to Understanding of 'Black Holes'

New Data Adds to Understanding of 'Black Holes' WASHINGTON Scientists continue to learn more about black holes in space, places where the pull of gravity is so strong that not even light can escape. Black holes occur after supergiant stars explode in

发表于:2019-01-14 / 阅读(115) / 评论(0)

VOA标准英语2016年(九月)

美国国家公共电台 NPR Stump Jonathan Coulton

JONATHAN COULTON: From NPR and WNYC, coming to you from a studio in a skyscraper in midtown Manhattan, it's NPR's hour of puzzles, word games and trivia, ASK ME ANOTHER. I'm Jonathan Coulton. Now, here's your host, Ophira Eisenberg. OPHIRA EISENBERG,

发表于:2019-01-16 / 阅读(98) / 评论(0)

2016年NPR美国国家公共电台12月

美国习惯用语:396 stump speech, don't change horses...

美国总统每四年得改选一次。在总统大选年里同时也重选联邦和各州政府的官员，所以举国上下的政坛热闹非凡，从而也产生了不少习惯用语。我们从今天开始要专门介绍用在竞选运动中的习

发表于:2019-01-27 / 阅读(95) / 评论(0)

美国习惯用语

The vigil by the Tree Stump

In the state of Song there was a farmer in whose fields stood a tree stump．A hare which was running very fast dashed against the stump and died，having broken its neck．So the farmer abandoned his plough and waited by the tree stump，hoping to g

发表于:2019-02-03 / 阅读(76) / 评论(0)

趣味英语

每日一词【846】stump：游说演说

今天我们要学的词是stump。 Stump, 意思是游说演说。President Obama stumped for New Jersey governor Jon Corzine's re-election effort, 美国总统奥巴马为新泽西州长柯赞参选连任站台。Former President Bill Clinton stump

发表于:2019-02-04 / 阅读(99) / 评论(0)

英语每日一词

学个词Learn a Word 第846期 Stump

发表于:2019-02-06 / 阅读(67) / 评论(0)

英语单词荟萃

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capital-intensive development strategy