SSS 2009-12-22

In 2008 astronomers discovered surprising amounts of water molecules where planets were forming near young stars. But how, they wondered, could those molecules survive? They should have been destroyed by ultraviolet radiation. In theory, planetary du

VOA慢速英语2011--Astronomers Still Look to Hubble Space T

Technology Report - Astronomers Still Look to Hubble Space Telescope 科技报道 - 哈勃太空望远镜20年后威力不减 This is the VOA Special English Technology Report. 这里是美国之音慢速英语科技报道节目。 The Hubble Space T

SSS 2011-03-31

This is Scientific Americans 60-Second Science. Im Karen Hopkin. This will just take a minute. Its been nearly 20 years since astronomers first identified a planet outside our solar system. More than 500 exoplanets have been discovered since then, ye

SSS 2010-11-18

This is Scientific Americans 60-Second Science. Im Christopher Intagliata. Got a minute? Astronomers have already discovered hundreds of exoplanets. But make way for the new kid, which is orbiting a kind of star that models say it shouldnt. Researche

经济学人05:SKA项目由非洲和澳大拉西亚来合作完成

Science and Technolgy. 科技。 The Square Kilometre Array. SKA项目。 Divide and rule. 分工合作。 The world's biggest astronomy project is split between Africa and Australasia. That gives South Africa, in particular, a chance to show its sci

SSS 2008-12-04

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Its not every day we get a chance to time travel. Other than into the future at the rate of one second per second. But astronomers say theyve done a li

SSS 2008-10-20

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. We humans have always pondered the heavens. Astronomy and physics have come out of our wonder at the points of light in the darkness. Scientists now wa

SSS 2008-05-19

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. If youve ever wanted to explore the universe, your dream is now as close as your keyboard. Because last week, Microsoft unveiled its online WorldWide T

SSS 2010-12-01

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. To many who stare up at the heavens, the stars may seem simply uncountable. Of course that's not the attitude of astronomers. But they've made a discov

万物简史 第55期:事物的测定(2)

At one point the group had to suspend work for eight months while La Condamine rode off to Lima to sort out a problem with their permits. Eventually he and Bouguer stopped speaking and refused to work together. Everywhere the dwindling party went it

万物简史 第32期:走进太阳系(10)

Of course we have no prospect of such a journey. A trip of 240,000 miles to the Moon still represents a very big undertaking for us. A manned mission to Mars, called for by the first President Bush in a moment of passing giddiness, was quietly droppe

万物简史 第28期:走进太阳系(6)

So if Pluto really is a planet, it is certainly an odd one. It is very tiny: just one-quarter of 1 percent as massive as Earth. If you set it down on top of the United States, it would cover not quite half the lower forty-eight states. 因此，如果冥

万物简史 第27期:走进太阳系(5)

As for Pluto itself, nobody is quite sure how big it is, or what it is made of, what kind of atmosphere it has, or even what it really is. A lot of astronomers believe it isn't a planet at all, but merely the largest object so far found in a zone of

万物简史 第24期:走进太阳系(2)

This was actually something of a blow to Pluto's status as a planet, which had never been terribly robust anyway. Since previously the space occupied by the moon and the space occupied by Pluto were thought to be one and the same, it meant that Pluto

TED演讲:宇宙有中心吗(2)

Shortly after Copernicus, in the 1580s, an Italian friar, Giordano Bruno, 哥白尼死后不久，在十六世纪80年代，意大利修道士焦尔达诺布鲁诺提出， suggested the stars were suns that likely had their own planets and that the

万物简史 第409期:生命的起源(3)

There are actually twenty-two naturally occurring amino acids known on Earth, 实际上，地救上有22种天然存在的氨基酸， and more may await discovery, but only twenty of them are necessary to produce us and most other living things. 更多

万物简史 第241期:马斯特-马克的夸克(13)

Hubble realized that this could be expressed with a simple equation, Ho = v/d (where Ho is the constant, v is the recessional velocity of a flying galaxy, andd its distance away from us). Ho has been known ever since as the Hubble constant and the wh

万物简史 第181期:爱因斯坦的宇宙(24)

In 1919, now aged thirty, he moved to California and took up a position at the Mount Wilson Observatory near Los Angeles. Swiftly, and more than a little unexpectedly, he became the most outstanding astronomer of the twentieth century. 1919年，他已

万物简史 第278期:砰!(13)

The results were so unexpected, in fact, that the three scientists at first thought they had to be wrong. 实际上，结果完全出人意料，三位科学家起先以为自己错了。 The amount of iridium in the Alvarez sample was more than thre

神探夏洛克第一季第三集_22

神探夏洛克第一季第三集_22 OK, I'll prove it. 给我时间 给我时间好吗? Give me time. Will you give me time? 十 是个小孩 'Ten...' It's a kid. 天啊 是个小孩 Oh God, it's a kid. 他说什么? 十 What did he say? Ten. 九 他在