Supermassive Black Holes 超大质量黑洞 - 1

In March 2000, two astronomers made an extraordinary discovery, one that is set to overturn our understanding of how the universe formed. We're never going to see a time like this in astronomy again.

Supermassive Black Holes 超大质量黑洞 - 7

When it's feeding, a giant black hole creates a bright burning gas disk around it and then for some reason, it stops feeding, leaving a dark, deadly core lurking menacingly in the center of the galaxy

新概念英语第四册Lesson 43 Are there strangers in spac

Lesson 43 Are there strangers in space? 宇宙中有外星人吗？ First listen and then answer the following question. 听录音，然后回答以下问题。 What does the 'uniquely rational way' for us to communicate with other intelligent beings

走进剑桥大学 第13期:失明诗人弥尔顿

John Milton 失明诗人弥尔顿 One of the greatest poets of the English language, John Milton, is best-known for his epic poem Paradise Lost. Mihons powerful prose and poetry had an immense influence especially on the 18th-century verse. Besides p

英语听力文摘 English Digest 625、外星球上有生命吗？

Is There Life On Other Planets? 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 m

Alien Neighbors 寻访外星人 13

VOA慢速英语--科学家发现太阳系中最古老的天体

Alien Asteroid Could Be Oldest Object in Our Solar System Astronomers have been closely watching an object that travels in an orbit around our sun. Astronomers say this object -- an asteroid -- circles the sun in the same orbital path as the planet J

万物简史 第70期:事物的测定(18)

Soon afterward, Maskelyne returned to England where he became astronomer royal, and Mason and Dixonnow evidently more seasonedset off for four long and often perilous years surveying their way through 244 miles of dangerous American wilderness to set

万物简史 第64期:事物的测定(12)

Norwood's two daughters brought their father additional pain by making poor marriages. One of the husbands, possibly incited by the vicar, continually laid small charges against Norwood in court, causing him much exasperation and necessitating repeat

Mystery of star explosion 2000 years ago solved

BEIJING, Oct. 26 (Xinhuanet) -- The question, why the first documented supernova was super-sized and grew so fast, has puzzled astronomers for centuries. Now it is solved by US researchers. The supernova, an exploded star, was observed in 185 A.D. an

Who Was Leonardo da Vinci 达·芬奇 THE UNIVERSE

IN THE SECOND CENTURY A.D., THERE WAS A FAMOUS GREEK ASTRONOMER NAMED PTOLEMY. HE BELIEVED THAT THE EARTH WAS THE CENTER OF THE UNIVERSE. THE OTHER PLANETS AND THE SUN MOVED AROUND THE EARTH. PEOPLE ACCEPTED THIS BELIEF UNTIL THE MIDDLE OF THE 1500S.

Step by Step 3000 第2册 Unit11:Space(2)

Part 2. Astronomers discover solar system. Keywords. another solar system, planets, challenge. Vocabulary. constellation, astronomy, full-fledged, Jupiter. A. Listen to a science report, write down the information about the new solar system. What sci

万物简史 第243期:马斯特-马克的夸克(15)

The difficulty in making final determinations is that there are often acres of room for interpretation. Imagine standing in a field at night and trying to decide how far away two distant electric lights are. Using fairly straightforward tools of astr

万物简史 第242期:马斯特-马克的夸克(14)

This would mean that the universe was only half the size and age that Sandage believedten billion years. Matters took a further lurch into uncertainty when in 1994 a team from the Carnegie Observatories in California, using measures from the Hubble s

万物简史 第178期:爱因斯坦的宇宙(21)

Coincidentally, at about the time that Einstein was affixing a cosmological constant to his theory, at the Lowell Observatory in Arizona, an astronomer with the cheerily intergalactic name of Vesto Slipher (who was in fact from Indiana) was taking sp

Researchers find "lonely planets"

BEIJING, May 20 (Xinhuanet) -- Scientists have discovered a Jupiter-sized exoplanet that is completely unbound from a host star, according the scientific journal Nature published Thursday. The research was conducted by astrophysicists from Osaka Univ

英闻天下——283 An Asteroid Misses Earth, Causes No Public Panic

Meanwhile, a 45-meter wide asteroid has hurtled safely past earth after it came within 27-thousand kilometers, making it the closest known flyby for a rock of its size. The asteroid, named 2012 DA14 came closer to earth than many communication and we

万物简史 第352期:孤独的行星(17)

The Moon's steady gravitational influence keeps the Earth spinning at the right speed and angle 由于月球持久的引力影响，地球能以合适的速度、合适的角度自转， to provide the sort of stability necessary for the long and suc

万物简史 第349期:孤独的行星(14)

The figures have since been refined and made a little more generous, 自那以后，这两个数字被更精确地测算了一遍，放宽了一点， 5 percent nearer and 15 percent farther are thought to be more accurate assessments for our zone of

万物简史 第244期:马斯特-马克的夸克(16)

This uncertainty applies, incidentally, to relatively nearby things as much as to the distant edges of the universe. As Donald Goldsmith notes, when astronomers say that the galaxy M87 is 60 million light-years away, what they really mean (but do not