文章列表

• 1.英语听力：2013-10-20 地平线：黑洞吞噬—14
• Instead, it seems to be a gas cloud moving at huge speeds right in the direction of the black hole. But what really rang along bells was the way it ha...
• 2.英语听力：2013-10-18 地平线：黑洞吞噬—13
• It was a stunning discovery. After a quest lasting decade, Donald Lynden-Bell had been proved right. Here indeed, just where he had predicted, was a s...
• 3.英语听力：2013-10-16 地平线：黑洞吞噬—12
• If there's a black hole at the center of our galaxy, that's gonna force these objects that are really close to the black hole to move much faster than...
• 4.英语听力：2013-10-13 地平线：黑洞吞噬—11
• Just as I arrived at UCLA with my first faculty position, everything was falling into place in terms of the ability to answer this question at the cen...
• 5.英语听力：2013-10-11 地平线：黑洞吞噬—10
• It's like trying to pick out an individual inside the middle of a busy city, with lights and cars, and things happening all around them. But that wasn...
• 6.英语听力：2013-10-09 地平线：黑洞吞噬—9
• At last, astronomers had a map of our galaxy. A panorama of the Milky Way, it would never be possible to see from Planet Earth. 27,000 light-years fro...
• 7.英语听力：2013-10-06 地平线：黑洞吞噬—8
• 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 w...
• 8.英语听力：2013-10-04 地平线：黑洞吞噬—7
• It suggested a baffling paradox that quasars are really shining black holes, capable of emitting the energy of entire galaxies. But Lynden-Bell then w...
• 9.英语听力：2013-10-02 地平线：黑洞吞噬—6
• The mystery of what could count for the quasars' extraordinary brightness was the hot topic in astronomy during the 1960s. As astronomers began to gra...
• 10.英语听力：2013-09-29 地平线：黑洞吞噬—5
• But that is not the only surprise. People began to realize that these tiny star-like things or they looked like stars are actually putting out as much...