13-11-14 An international team of astronomers has answered a long standing question about the enigmatic（神秘的） jets emitted by black holes, in research published today in the journal Nature. Jets are narrow beams of matter spat out at high speed from near...

13-07-28 President Barack Obama has said that Trayvon Martin could have been me, 35 years ago, in his first comments on the case since last week's verdict. 在美国白人协警乔治齐默尔曼射杀黑人青年特雷翁马丁一案的判决出炉近一周后，美国总统奥巴马19日终于首度露面...

13-05-05 A new kind of cosmic flash may reveal something never seen before: the birth of a black hole. When a massive star exhausts its fuel, it collapses under its own gravity and produces a black hole, an object so dense that not even light can escape its...

12-11-01 There's good news for fans of black raspberries（黑树莓） : A U.S. Department of Agriculture (USDA) scientist and his commercial colleague have found black raspberries that have resistance to a disease-spreading aphid（蚜虫） . Agricultural Research...

12-09-11 I have in my hands two boxes which God gave me to hold. He said, Put all your sarrows in the black box, and all your joys in the gold. I heeded his words, and in the two boxes both my joys and sarrows I stored. But though the gold became heavier eac...

12-03-12 Black swan is the event that is a surprise (to the observer) and has a major impact. 黑天鹅事件指突然发生并且产生巨大影响的事件。 The term black swan was a Latin expressionits oldest known reference comes from the poet Juvenal's characterization of...

12-02-13 The giant black hole at the center of the Milky Way may be vaporizing and devouring（吞食，毁灭） asteroids, which could explain the frequent flares observed, according to astronomers using data from NASA's Chandra X-ray Observatory. For several yea...

11-12-06 University of California, Berkeley, astronomers have discovered the largest black holes to date - two monsters with masses equivalent to 10 billion suns that are threatening to consume anything, even light, within a region five times the size of our...

11-10-30 Fat doughnut-shaped dust shrouds that obscure about half of supermassive black holes could be the result of high speed crashes between planets and asteroids（小行星） , according to a new theory from an international team of astronomers. The scienti...

11-07-14 At the heart of most, if not all, large galaxies lurks（潜伏） a supermassive black hole with a mass millions, or sometimes billions, times greater than that of the Sun. In many galaxies, including our own Milky Way, the central black hole is quiet....