标签：天文学家 相关文章
In 2001 a new NASA probe was launched. Called Odyssey, it was sent to Mars to carry out the most detailed analysis ever of the planet’s surface. What it has discovered may be about to answer one of
火星生命
Darkening Skies Brighten Our Lives 光害危机 by Ilse van Wyk In both modern and ancient thinking, light and brightness are viewed positively. _(1)_ The ideal situation for any astronomer is to be able to observe the sky when there is no interferen
常春藤解析英语
There is of course a great deal we don't know, and much of what we think we know we haven't known, or thought we've known, for long. Even the notion of the Big Bang is quite a recent one. 当然，有大量的事情我们不知道，还有大量的事情
万物简史
A planet called HD 209458b, aka Osiris, orbits its star so closely that it is losing some of its atmosphere to the stellar wind. It may thus have a cometary tail Whaddya get when you cross a planet with a comet? Well, HD 209458b looks like a candidat
60秒科学
February 19th, 1945In the final months of World War II, some thirty thousand US marines begin landing in Iwo Jima, that's where they fight months-long battle to seize the rest of the Pacific island from Japanese forces. 1942Also during World War II,
历史上的今天-2010年
Science and Technolgy 科技 Citizen astronomy 全民天文学 A new world in your bedroom 卧室里的新天地 Amateur astronomers join the ranks of the planet hunters 业余天文学家加入猎星人行列 IN AN age of professionals, the ability
经济学人科技系列
The question that naturally occurs is What would it be like if a star exploded nearby? Our nearest stellar neighbor, as we have seen, is Alpha Centauri, 4.3 light-years away. I had imagined that if there were an explosion there we would have 4.3 year
万物简史
For all his achievements, however, Halley's greatest contribution to human knowledge may simply have been to take part in a modest scientific wager with two other worthies of his day: Robert Hooke, who is perhaps best remembered now as the first pers
万物简史
Tombaugh had no formal training as an astronomer, but he was diligent and he was astute, and after a year's patient searching he somehow spotted Pluto, a faint point of light in a glittery firmament. 汤博没有受过成为天文学家的专门训练，
万物简史
2.WELCOME TO THE SOLAR SYSTEM 2.欢迎来到太阳系 Astronomers these days can do the most amazing things. If someone struck a match on the Moon, they could spot the flare. From the tiniest throbs and wobbles of distant stars they can infer the siz
万物简史
Martin Rees, Britain's astronomer royal, believes that there are many universes, possibly an infinite number, each with different attributes, in different combinations, and that we simply live in one that combines things in the way that allows us to
万物简史
Science and technology 科学技术 Astronomy 天文学 The cosmic boogie-box 宇宙中的摇滚乐 The sky, it seems, is filled with unexpected radio signals 看上去，太空中充满了我们意想不到的无线电讯号 WHISPER it not, but doin
经济学人科技系列
本期内容： A house-sized asteroid will shave past our planet on 12 October, far inside the Moon's orbit but without posing any threat, astronomers have said. The space rock will zoom by harmlessly at a distance of about 44,000km, an eighth of th
夏说英语新闻晨读
Part 4. Language study and language appreciation. Listen to the following statements you have learned in the previous and present units. Pay special attention to the parts in bold part. Learn to appreciate and use the language. 1. to reduce the sprea
Step by Step 3000 第二册
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
阅读空间
You may not feel outstandingly robust, but if you are an average-sized adult you will contain within your modest frame no less than 7 x 10 18 joules of potential energyenough to explode with the force of thirty very large hydrogen bombs, assuming you
万物简史
When a journalist asked the British astronomer Sir Arthur Eddington 有一位记者问英国天文学家阿瑟爱丁顿， if it was true that he was one of only three people in the world who could understand Einsteins relativity theories, 他是不是
万物简史
We now know that Cepheids throb as they do because they are elderly stars that have moved past their main sequence phase, in the parlance of astronomers, and become red giants. The chemistry of red giants is a little weighty for our purposes here (it
万物简史
本期内容： The European Space Agency and Russia launched a joint mission to Mars, with the lift-off of a Proton rocket in Kazakhstan. The spacecraft, comprising an orbiter, which will analyse methane and other gases in the Martian atmosphere, an
夏说英语新闻晨读
本期内容： Something is happening out there, and astronomers sure wish they knew what it was. For the last several years, they have been teased and baffled by mysterious bursts of radio waves from the distant universe: pops of low-frequency radi
夏说英语新闻晨读