标签：天文学家 相关文章
With such a short window to capture data, the team must test and retest the instruments throughout new horizons' nine-year journey.Every year for about two months we are going to wait the spacecraft up and do some testing, some observations of celest
探索与发现2015年
Harvest Moon 秋分前后之满月 Right now, as seen from the northern hemisphere, the ecliptic -- or path of the sun, moon and planets -- makes a narrow angle with the evening horizon. Learn more about the ecliptic -- and the Harvest Moon -- today on Ear
(科普英语)Earth and Sky
Galactic Rotation 银河系自转 Astronomers calculate there is ten times more matter in our Milky Way galaxy than we can actually see. Discover how the orbital motions of stars in the galaxy reveal dark matter -- on today's Earth and Sky. JB: I'm Joel
(科普英语)Earth and Sky
What is a black hole? Well, it's difficult to answer this question, since the terms we would normally use to describe a scientific phenomenon are inadequate here. Astronomers and scientists think that a black hole is a region of space (not a thing) i
双语有声阅读
This correlation is the most important thing we've learned about supermassive black hole so far. Astronomers are always looking for correlations. Whenever you find one that's really tight like this on
超大质量黑洞
美联社,新闻一分钟,Israeli,Gaza,West Bank,1: Israeli troops drag Jewish settlers out of their Gaza homes in a massive evacuation. In the West Bank a settler kills three Palestinians. 2: Three car bombs explode near a bus station and a hospita
美联社新闻一分钟2005
1. The so-called morning-after pill will soon be available over the counter. The Food and Drug Administration is allowing Plan B to be sold to women 18 and older without a prescription. Girls 17 and y
美联社新闻一分钟2006
According to the Daily Telegraph of October 9, water ice and organic molecules that help to form the basis of life have been discovered on a second asteroid, called 65 Cybele, by astronomers。 The finding was reported at a meeting of planetary scien
阅读空间
By David McAlary Washington 01 February 2006 Claims that our solar system has a 10th planet beyond Pluto are supported by a new finding by German and French astronomers. They calculate that it is bigg
2006年VOA标准英语（二月）
Unit 45 Looking for a good book(1) 第45课 寻找一本好书(1) C: Excuse me, I'm looking for a good novel. Can you recommend anything? 顾客：对不起，我正在找一本好的小说。你能介绍一下吗？ S: Certainly. What kind of novel
购物英语口语一本通
地球大小的新行星被发现 Not too big, not too small. Not too hot, not too cold. A newly discovered planet looks just right for life as we know it, according to an international group of astronomers. 不太大又不太小，不太冷又不太热
VOA双语新闻 2014年4月
【NPR边听边练】致力于提供新鲜有趣、饶有意味的时讯资料，致力于通过精听的方式促进听力提高，致力于不断开阔眼界和深入了解美国观点。 精听建议： 先完整地把一条新闻听一到三遍，争
NPR边听边练
But if you look carefully, stars aren't spread smoothly across the whole sky. They are gathered together into a band that loops around the sky which we call the Milky Way. That bright strip across the sky with its extraordinary abundance of stars and
探索与发现2013年
The mystery of what could count for the quasars' extraordinary brightness was the hot topic in astronomy during the 1960s. As astronomers began to grapple with the new enigmatic objects that had been found by the radio telescopes, one astronomer, kee
探索与发现2013年
Theres nothing anywhere near as extreme as a black hole. The disturbing truth about black holes is that there are boundary between the known universe and the place that would forever lie beyond the reach of science. They are in an anomaly of gravity
探索与发现2013年
High above your head, in the centre of our Milky Way Galaxy, a violent drama is about to unfold. Our super-massive black hole is getting ready to have dinner. As a gas cloud three times the size of the Earth, its caught in its gravitational hold. Acr
探索与发现2013年
But Zwicky was also capable of insights of the most startling brilliance. In the early 1930s, he turned his attention to a question that had long troubled astronomers: the appearance in the sky of occasional unexplained points of light, new stars. 然而
万物简史
But, as powerful as Rome may have been, they couldn't change the rules of the universe, and neither of these calendars add up to anywhere close to the time it takes us to orbit the sun. After a few years, the seasons are out of whack with the months,
留美老师带你每日说英文
To really behold the stars these days, you have to travel far from cities and towns to escape urban glow. The magnificent sight of the Milky Way, for example, can now only be seen in rural areas. But why do we shine light up into the sky in the first
英语时差8，16
Almost at once the Bogdanov paper excited debate among physicists as to whether it was twaddle, a work of genius, or a hoax. Scientifically, it's clearly more or less complete nonsense, Columbia University physicist Peter Woit told the New York Times
万物简史