New assurances this week from NASA that theworld will not end on December 21st. This comes as one British newspaperreports that people on the globe are stockpiling supplies just in case. Join me now was Andrew Fraknoi, the astronomyprofessor of Footh

发表于:2018-12-02 / 阅读(64) / 评论(0) 分类 万花筒2012年

Before the eighteenth century, botany was merely a branch of medicine. Until then, mostly doctors and surgeons studied herbs. Attempts had been made by others to classify plant species into groups, but the breakthrough came with the work of Carl Lin

发表于:2018-12-04 / 阅读(46) / 评论(0) 分类 人教全日制普通高中英语(必修)高三(全一册)

If it points the camera forward, at first it sees only black. But as it moves toward the heart of the black hole, it encounters the most bizarre place in the universe. A black hole in massive gravity holds everything down to an unimaginably small poi

发表于:2018-12-07 / 阅读(213) / 评论(0) 分类 访谈录2010

Space aliens and extraterrestrials have long been popular subjects of Hollywood movies and science fiction literature. But the idea of intelligent life in outer space is no longer limited to fiction. For the last 50 years, scientists and astronomers

发表于:2018-12-08 / 阅读(62) / 评论(0) 分类 VOA标准英语2010年(十一)月

Hubble's Dazzling Mission Nears Its End 哈勃太空望远镜使命渐入尾声 The Hubble Space Telescope has changed the way we see the universe. For almost a quarter of a century, it has sent vast amounts of data and images from space. A new exhib

发表于:2018-12-08 / 阅读(34) / 评论(0) 分类 VOA标准英语2014年(五月)

Reuters. Thousands gathered in Novosibirsk in Siberia to see a rare solar eclipse. With eye protection and some looking through specially shielded telescopes, they waited until the moment the sun began to disappear in the middle of the day. A total s

发表于:2018-12-11 / 阅读(46) / 评论(0) 分类 万花筒2008年

Security forces in Bahrain have vowed to do whatever necessary to shut down anti-government demonstrations. The government has banned protests and the military is cracking down on dissent. Three people have died and 231 were injured when police broke

发表于:2018-12-11 / 阅读(50) / 评论(0) 分类 澳洲ABC新闻快递2011年

Weve all been hearing about ongoing Mars exploration, and how water probably used to be abundant there. And a water spewing volcano was recently discovered on a small moon orbiting Saturn. Water is one sign that life may exist or have existed at some

发表于:2018-12-28 / 阅读(74) / 评论(0) 分类 初学者听力文摘精选

First of all let us consider the earth (that is to say, the world) as a planet revolving round the sun. The earth is one of mine planets which move in orbit round the sun. These nine planets, together with the sun, make up what is called our solar sy

发表于:2019-01-02 / 阅读(77) / 评论(0) 分类 双语有声阅读

By Jessica Berman The U.S. space agency has released the first close-up pictures of Titan, Saturn's secretive, giant moon. Photos from the international Cassini spacecraft show the orbiting object shr

发表于:2019-01-03 / 阅读(60) / 评论(0) 分类 VOA2004(下)--健康科技

SCIENCE IN THE NEWS - Youngest Type 1a Supernova Ever Observed SHIRLEY GRIFFITH: This is SCIENCE IN THE NEWS, in VOA Special English. Im Shirley Griffith. STEVE EMBER: And Im Steve Ember. Today, we tell about the discovery of what astronomers are cal

发表于:2019-01-04 / 阅读(65) / 评论(0) 分类 2012年VOA慢速英语(一)月

If you are floating in a balloon, the center of the red spot might be rather calm. But you will be going fast, your balloon will be going faster than the hurricane winds, but it might be a smooth ride. This storm is a sigh to the halt, towering five

发表于:2019-01-08 / 阅读(56) / 评论(0) 分类 自然百科2012年

It's really a wonderful time to be an astronomer, especially in studies of Milk Way. Were undergoing something for revolution. In fact, we can take you places. They're really quite remarkable. We are about to embark on an amazing journey. We'll take

发表于:2019-01-22 / 阅读(57) / 评论(0) 分类 自然百科2011年

Now, of course, I can't show you a picture of the galaxy on our screen. We can't fly above the galaxy and take a picture of it, and show you. We're stuck in the disc of the galaxy, but we can still image it from the ground, in fact, this image is a p

发表于:2019-01-22 / 阅读(61) / 评论(0) 分类 自然百科2011年

By comparing the detailed images, Hubble has taken another spiral galaxy. With the best images of our own taken from the ground, and by using satellites to measure the distance and density of stars in different directions, astronomers have been able

发表于:2019-01-22 / 阅读(57) / 评论(0) 分类 自然百科2011年

This is a picture of the Orion Nebula in visible light. We can see all of the gas here located in front of what we know are stars in the background, and we want to be able to look inside this nebula/ and see the stars. In infrared light in this image

发表于:2019-01-22 / 阅读(58) / 评论(0) 分类 自然百科2011年

Scientists are likening the new images from a large asteroid to discovery of a new world. Asteroid 21 Lutetia is located between Jupiter and Mars and the European Space Agency's probe Rosetta passed within about 2,000 miles of it, its onboard camera

发表于:2019-01-22 / 阅读(47) / 评论(0) 分类 自然百科2010年

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

发表于:2019-02-03 / 阅读(101) / 评论(0) 分类 2006年VOA标准英语(九月)

Every year the Smithsonians National Portrait Gallery in downtown Washington adds new works to its vast collection. 每年,位于华盛顿市中心的史密森尼国立肖像馆都会为其浩如烟海的收藏集锦中添加新的作品。 Ann Shu

发表于:2019-02-14 / 阅读(38) / 评论(0) 分类 VOA标准英语2019年(一月)

Building a Better Mirror for Telescopes 为望远镜打造更优质镜面 To study the heavens, it's all about the photons. We in astronomy are always greedy. We want every photon we can collect. Drew Phillips, astronomer at University of California

发表于:2019-03-15 / 阅读(219) / 评论(0) 分类 2017年Scientific American(九)月