单词：burr holes
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Illinois Governor Rod Blagojevich has named his choice to replace President-elect Barack Obama in the US Senate. Blagojevich today picked former Illinois Attorney General Roland Burris. Chicago Public Radio's Tony Arnold reports. Blagojevich named B
2008年NPR美国国家公共电台12月
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
超大质量黑洞
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
超大质量黑洞
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.
超大质量黑洞
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
超大质量黑洞
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
超大质量黑洞
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
2011年VOA慢速英语(十一)月
The Obama administration has confirmed plans to bring an end to the popular Cash for Clunkers program. In a statement, Transportation Secretary Ray LaHood says there's enough money to continue accepting submissions until the deadline this Monday eve
2009年NPR美国国家公共电台8月
[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
温馨夜读II
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
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Those stars don't feel the black hole. They feel the rest of the stars in the galaxy. They don't know or care that the black hole is there. If you took the black hole away from the galaxy, they would
超大质量黑洞
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
超大质量黑洞
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
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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
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After 12 days of airstrikes and intense ground fighting which began this past weekend, Israel today ordered a three-hour pause in its offensive in Gaza. The brief respite allowed food and fuel to enter the territory and medics to retrieve bodies fro
2009年NPR美国国家公共电台1月
President Bush in a somewhat reflective final news conference at the White House today indicated he has wondered whether there are some things he could have done better. However, on the matter of his administration's handling of the current economic
2009年NPR美国国家公共电台1月
1. New York Congressman Anthoney Weiner says he had made terrible mistakes, saying he did tweet lewd photos of himself to women, but says he is not resigning. 2. The ex-leader of the International Monetary Fund walks into court in New York, Dominique
美联社新闻一分钟2011(六月)
THE MAKING OF A NATION - US History Series: Jefferson Is Elected President in 1800, But Only on the 36th Vote Thomas Jefferson defeated Aaron Burr. But it took three days of voting in the House of Representatives to settle on a winner. Transcript of
VOA慢速英语2008年（五）月
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.
2010年VOA慢速英语(十一)月
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
VOA标准英语2016年(九月)