决胜四级听力必备 unit2

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美国科学60秒 SSS 2013-01-08

This is Scientific American 60 second Science, I am Karen Hopkin, this will just take a minute. There are in fact 100 billion galaxies, each of which contains something like a 100 billion stars. Well, Carl Sagan would have loved to get the latest est

Possible Earth-Like Planet Next Door?

Possible Earth-Like Planet Next Door? Scientists say they discovered an Earth-like planet orbiting the star closest to our planet other than the Sun. It is the closest planet ever found outside our solar system that could support life as we know it.

SSS 2011-04-22

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Most plants capture sunlight. And the results are usually green. Because in photosynthesis, plant chlorophyll uses wavelengths of blue and our sun's ab

SSS 2011-08-25

This is Scientific Americans 60-SecondScience. Im John Matson, got a minute? Say you need a diamond. You could go downto the jeweler, or you could put some carbon deep underground and let it sitfor a couple billion years. Or you could hop in a starsh

科学美国人60秒 SSS Winking Star Six Centuries Ago Explained

Winking Star Six Centuries Ago Explained 揭秘600年前那颗一闪即逝的恒星 On March 11, 1437, Korean royal astronomers noticed something out of the ordinary in the night sky. There was a brand new star they'd never seen before, between two o

60秒科学:Why Dwarf Galaxies Lack Star Power

Why Dwarf Galaxies Lack Star Power In a study in the journal Nature, researchers show that the relative lack of star density in dwarf galaxies need not conflict with standard cosmological models if you include the blast effects of supernovae. Karen H

VOA慢速英语--NASA称新发现的行星或拥有生命形式

For the first time ever, astronomers have discovered a system of seven Earth-sized planets orbiting around a single star. The finding was announced Wednesday by officials from NASA the U.S. space agency and other research team members. The discovery

英文儿童歌曲:Twinkle, twinkle, little star

Twinkle, twinkle, little star Twinkle, twinkle, little star 一闪一闪小星星 How I wonder what you are 我想知道你是什么？ Up above the world so high 在整个世界之上，如此的高 Like a diamond in the sky. 像在天空中的钻石

发现:适宜生命存活的一类地行星

An Earth-size planet has been spotted orbiting a nearby star at a distance that would makes it not too hot and not too cold - comfortable enough for life to exist, researchers announced September 29. If confirmed, the exoplanet, named Gliese 581g, wo

SSS 2011-07-13

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? You could think of it as the real dancing with the stars. Two white dwarf stars have been found twirling around each other to make a complete orbit in less than every 13

天方夜谭英文故事：The Dwarf with a Long Beard

Once upon a time in Arabia there ruled a Sultan. He had a son. His name was Arfan. One of the courtiers was a witch. She hated the prince Arfan. So she poisoned the mind of the Sultan against his son. She said, You will be over powered by your son pr

2015-04-08 BBC:星光七纪元-23

Most covered/convertable new body comes from the discovery of the read along giant. Ance walk from the world between gravity and nuclear version. We'd just a conclusion, the vast out layers at the star did touch from the hot hole. Rescidly Berbent Ge

2015-04-10 BBC:星光七纪元-24

This tiny companion to the bright Dog Star, was dubbed the pup. And by 1922, this new type of the star had an official classification. It was called a white dwarf. But naming it was the least of scientists problems. When they compared its size to its

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Suns Hidden Twin Stalks Planet Earth 太阳隐藏着的小兄弟威胁着地球 [1] When the end of the world comes, we'll know what to blame. Scientists have found compelling evidence that the Sun ha

2006年VOA标准英语-New Planet Discovered Around Distant Star

By Paul Sisco Washington, DC 15 September 2006 watch New Planet report Scientists in Washington D.C. have announced the discovery of a new planet. It is the largest planet ever seen from Earth. New planet, HAT-P-1 It is just weeks since Pluto was re

学科分类词汇——天文类

1 ASTRONOMY 天文 astronomy 天文学 astronomical 天文的 astronomical observatory 天文台 astronomer 天文学家 astrophysics 天文物理学 astrology 占星学 pseudoscience 伪科学 cosmos(universe) 宇宙 cosmology 宇宙学 infinite 无限

科学美国人60秒 SSS X射线可能照射到一些可居住外行星区域

Some Habitable Zone Exoplanets May Get X-Rayed Out X射线可能照射到一些可居住外行星区域 As astronomers hunt for habitable, Earth-like worlds, one popular place to look is around M stars, a type of red dwarf. Couple reasons for that: 当

澳大利亚科学家发现超级地球 距地球仅14光年

Australian astronomers have discovered the closest potentially habitable planet found outside our solar system so far a super-Earth located just 14 light years away. 澳大利亚的天文学家发现了太阳系外的一个潜在的宜居星球。这颗

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Webersat 韦伯卫星美国小型无线电照相卫星 West Ford 西福特美国广播通信试验卫星 Westar(West Star) 西联星美国国内通信卫星 White Cloud 白云美国海洋监测卫星 W