普通高中课程标准实验教科书 英语必修4 Unit 3 A taste of Engli

1 There are thousands of jokes which use play on words to amuse us. One person asks a question which expects a particular reply. Instead, what he gets is another kind of answer which makes the situation funny. Now read some of these customer and wai

VOA标准英语2009年-Astronomers Detect Most Distant Cosmic Obj

By Jessica Berman Washington 29 October 2009 Ultraviolet, X-Ray images of gamma-ray burst Astronomers have discovered evidence of the oldest and most distant cosmic event ever detected, a burst from a dying star that occurred 13 billion years ago, v

2006年VOA标准英语-Hubble Telescope Repaired

By Paul Sisco Washington, DC 05 July 2006 watch Hubble Repair report A Hubble telescope image of part of the universe Space scientists at the U.S. space agency, NASA, are celebrating the return to action of the Hubble telescope. --------- For more t

VOA标准英语2011--Hubble's Gaze Extends to Edges of Univer

Hubble's Gaze Extends to Edges of Universe Ever since the days of Galileo and the first optical telescopes more than 400 years ago, astronomers have been looking for ways to cast their gaze farther into the heavens around us. Today, thanks to the ear

美国国家公共电台 NPR Philip Pullman Returns To The Dark Materials Universe In A New Prequel — Er, 'Equel'

SCOTT SIMON, HOST: The world Philip Pullman created is back, in his hands and now ours. His Dark Materials trilogy, which began more than 20 years ago with a book called The Golden Compass is set in a world ruled by a theocratic overlords called The

英语听力：自然百科 穿越银河系的旅行 Through Milky Way—29

And every faint smudge of light you are looking at is a galaxy. For Richard Ellis, it's a galactic treasure trove. So much like an archaeologist/, we piece together history by digging into deeper and deeper layers. So a cosmologist like myself, uses

英语听力：自然百科 穿越银河系的旅行 Through Milky Way—28

The first stars in our Milky Way were fearsome high-octane stars, burning their hydrogen fuel at tremendous rates, rushing through their life cycle. They like the rockslides. They live fast and die young. They run out of their fuel very quickly and e

英语听力：自然百科 穿越银河系的旅行 Through Milky Way—27

But our time traveling isnt yet over. There is still the question of how the first galaxies kindled the very first stars. We are on a journey visiting the Dark Ages, a time over 12.5 billion years ago. The sight is spectacular. The sky is ablaze with

英语听力：自然百科 穿越银河系的旅行 Through Milky Way—26

So what we are looking at is a region about 200 million light years across which is actually just a small part of our really big simulation that we call Bolshoi which is Russian for big. Everything that you see here is actually completely invisible.

英语听力：自然百科 穿越银河系的旅行 Through Milky Way—25

What happens is that, first the dark matter forms the structure, the ordinary matter then follows the dark matter. The ordinary matter is hydrogen and helium at this stage. And the hydrogen and helium fall/ to the center of the dark matter halos that

英语听力：自然百科 穿越银河系的旅行 Through Milky Way—24

Its extremely frustrating because this region, this time period holds within it, in some sense, the rose headstone of / galaxy formation. But there are clues as to what was happening inside those dense hydrogen clouds. Look back even further in time

英语听力：自然百科 穿越银河系的旅行 Through Milky Way—23

But dark matter does more than simply holds galaxy like ours together. Astronomers think it binds the Milky Way into an extraordinary structure along with billions of other galaxies. To explore it, we'll take a journey to the very edge of the univers

英语听力：自然百科 已知的宇宙：外星生命 Alien_Contact-1

For thousands of years, weve wondered if we are alone in the cosmos. Life, is it a one-time event, or its something that's occurred lots of times throughout the universe.? And at this very moment, new discoveries are bringing us closer to the answers

2006年VOA标准英语-Nobel Prize Science Winners Made Important Cont

By Deborah Block Washington, DC 05 December 2006 watch Nobel Prize Science Winners On Sunday, (December 10, 2006) this year's Nobel Prizes are being presented in Stockholm, Sweden. The annual awards are given to people who have made outstanding cont

2007年VOA标准英语-Massive Research Project Nearing Completion

By Paul Sisco Washington 11 July 2007 The world's largest particle physics laboratory is under construction on the border between Switzerland and France. At the heart is the Large Hadron Collider Particle Accelerator being built by the European Organ

学个词Learn a Word 第1351期　accelerating

今天我们要学的词是accelerating。Accelerating, 形容词，意思是加速的。三名美国科学家今年被授予诺贝尔物理学奖，他们发现 The universe is expanding at an accelerating pace, 宇宙正在以加速度膨胀。 The

VOA常速英语2007-Beatles Soundtrack Tells Story of Romance, Prote

By Alan Silverman Hollywood 14 October 2007 For many, the music of the Beatles was the soundtrack for the turbulent 1960s. In her new film musical set in that decade, award-winning director Julie Taymor uses almost three dozen of those songs to tell

英语听力文摘 English Digest 419、独一无二的我们

Lithic Principle 岩屑法则 I heard recently that if the laws of nature were changed even a little bit, there would be no people in the universe. Is this true? Well, its certainly true that if the fundamental constants of nature were somehow change

英语听力文摘 English Digest 434、人类听不见的声音

The Lowest Note in the Universe 宇宙中的最低音 It's coming from a black hole in the Perseus Cluster, about two hundred fifty million light years away. A black hole？And outer space？That makes sound? Whats happening out there is that interga