标签:Galaxies 相关文章
A Lesson Learned at Midnight By James Q. DuPont Ever since one midnight, in nineteen hundred and nine, when I first heard my mother crying, I have been groping for beliefs to help me through the rough going and confusions of life. My dads voice was l
In the square outside the British Library in London is a sculpture of Sir Isaac Newton - The first man who asked why apples seem always to fall towards the centre of the earth. Maybe they chose it for the spot because it shows a great scientist at wo
Lesson 59 In or out? New words and expressions: 1. bark Our dog, Rex, used to sit outside our front gate and bark. The dog barked at the visitor. You can hear dogs bark in the distance in the dark. 2. press As the neighbors complained of the noise, m
By Marilyn Christiano Broadcast: December 23, 2003 (THEME) ANNOUNCER: EXPLORATIONS -- a program in Special English by the Voice of America. (MUSIC) Today, Richard Rael and Tony Riggs tell the story of
This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. In 1930 astronomer Clyde Tombaugh discovered the dwarf planet Pluto while looking at photographs of the night sky. Pluto was the first object to be found
This is Scientific American's 60-Second Science. I'm Steve Mirsky . Got a minute ? Future cosmologists will get the universe all wrong, said Arizona States Lawrence Krauss at the AAAS Meeting on February 16th: All of the pillars of the big bang will
For astronomers who study the large-scale structure of the universe, dwarf galaxies have proven quite vexing. Because the leading model of cosmology has been unable to account for their relative lack of substance. Now scientists writing in the journa
Questioning the universe Stephen Hawking There is nothing bigger or older than the universe. The questions I would like to talk about are: one, where did we come from? How did the universe come into being? Are we alone in the universe? Is there alien
Unknown to them, just thirty miles away at Princeton University, a team of scientists led by Robert Dicke was working on how to find the very thing they were trying so diligently to get rid of. The Princeton researchers were pursuing an idea that had
We have reasons to suspect, based on recent high resolution photography of the surface, that there may be a subsurface ocean there. And where we find water and where we find the right mix of organics,
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
Which came first, black holes or galaxies? Its been a bit of a conundrum for astrophysicists. Black holes are known to devour matter, but did they arise before or after, the galaxies in which they exist? Now, scientists say it looks like the black ho
This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? Five very old galaxies are now known to astrophysicists, thanks to Albert Einstein. A century ago, Einstein predicted an effect called cosmic gravitational lensing. Pictur
And many of the questions that we might have about the universe at large scales, 我们关于宇宙在宏观上有很多问题, such as, how does gravity work? 比如,引力是怎么起作用的? might be answered by studying these systems. 这些
So when a hopeful and softspoken minister got in touch to ask if they had any usable field charts for hunting supernovae, the astronomical community thought he was out of his mind. At the time Evans had a ten-inch telescopea very respectable size for
The eventual result was the inflation theory, which holds that a fraction of a moment after the dawn of creation, the universe underwent a sudden dramatic expansion. It inflatedin effect ran away with itself, doubling in size every 10-34seconds. The
视频介绍:《How the Universe Works》是一部迷你系列剧。最初从2010年4月25日到5月24日在探索频道播放。由Mike Rowe讲述。本剧共有8集:Big Bang, Black Holes, Alien Galaxies, Stars, Supernovas, Planets, Solar System
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
Particle physics, in short, is a hugely expensive enterprisebut it is a productive one. Today the particle count is well over 150, with a further 100 or so suspected, but unfortunately, in the words of Richard Feynman, it is very difficult to underst
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