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 had changed shape. We see that this gas cloud as it moves closer and closer to the black hole, is gett

英语听力：2013-09-15 《流言终结者》 第11季 第8集 完全爆炸手册—20

I call this piece Explosion 753. From A for audit to Y for yelling and everything in between, the Mythbusters A to Z of explosions has been a blast. And with just one letter left, you might say that the guys are going to end with a bang. Well if X is

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 centre of our galaxy. The telescopes were getting bigger so you had the due ability to see fine details

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 they would move if there were no black holes. So the first thing you wanted to see is there are ver

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 super massive black hole. But in the last year, the quest to find and understand black holes has sudd

英语听力：2013-11-22 地平线：什么害死了我们的蜜蜂—1

This summer, I set out to get to the bottom of a story thats captured the headlines. And this one, Ive got some experience myself, because Im also a beekeeper. There, is that good? Yeah, its perfect. Ok, I hate squeezing like that. I met some scienti

英语听力：2013-11-20 地平线：黑洞吞噬—27

If you look at the Milky Way galaxy, its this interesting balancepoint that this place where its just enough to wash from the black whole tokeep things interesting to possibly make the environment that allows us toexist here. Astronomers are eagerly

英语听力：2013-11-17 地平线：黑洞吞噬—26

To walkhere on Earth, to be alive, it thanks to a long chain of cause and effect writtendeep into the structure of the universe. A primordial process so long, and soancient that on the scale of a human life it seems almost incomprehensible. One of th

英语听力：2013-11-15 地平线：黑洞吞噬—25

Galaxies could in a way, be much bigger than they currently are. Something is stopping them growing larger and that something is the black hole at the center. Now this is bizarre because the ration of the size of the black hole to the size of the gal

英语听力：2013-11-10 地平线：黑洞吞噬—23

There was now a pressing challenge to understand how black holes in their surrounding galaxies. To be so intertwined.，professor Andy Fabian in the Cambridge University is one astronomer who began to look. Like the ripples, they travel out from his

英语听力：2013-11-08 地平线：黑洞吞噬—22

Was there any connection between the two? What Magorian discovered was completed unexpected. The relationship that we find was essentially that the bigger the galaxy, the bigger the black hole. That's in its broad terms. If you want to be a bit more

英语听力：2013-11-06 地平线：黑洞吞噬—21

Far from being violentaions and destruction, it seems instead , black holes might actually be benign architects ,whichve played a part in the creation of the galaxies,stars,and even the life itself. One of the first scientists to begin to see black h

英语听力：2013-11-03 地平线：黑洞吞噬—20

The super bright quasar phase having ended many billions of years ago, when the fuel that fires violent emissions was completely consumed. But now, with the approaching gas cloud and a prospect of feeding, the black hole should get brighter. Exactly

英语听力：2013-11-01 地平线：黑洞吞噬—19

We now know this light is produced by the rotating disk of matter, spinning round the edge of the black hole at the heart of the Cygnus A galaxy, waiting to be devoured. It means that against all popular expectations, the brightest sources of light i

英语听力：2013-10-30 地平线：黑洞吞噬—18

Here then is the strange paradox of black holes: the defeating black hole is anything but black. Just how greedy and bright a black hole can get is revealed by an aptly very ordinary looking galaxy called Cygnus A, some 650 million light years away.

英语听力：2013-10-27 地平线：黑洞吞噬—17

The difference is that when you have a lot of gas, a lot of stuff orbiting around the black hole, there is a little bit of friction that causes matter to slowly spiral in towards the black hole. As gas continues to spiral in towards the Event Horizon

英语听力：2013-10-25 地平线：黑洞吞噬—16

To stare into the void of a black hole, to tumble through space before disappearing forever within it, it's the prospect of catching that unique moment that explains the excitement of this year's events. What happens to matter once it's been swallowe

英语听力：2013-10-23 地平线：黑洞吞噬—15

It's clear that it will come very close to the black hole, might even hit the black hole. So maybe we actually are feeding the black hole here. Now exactly how much and how fast of all these is completely unknown and that's the excitement about it be

英语听力：2013-11-13 地平线：黑洞吞噬—24

The X-ray image revealed how the black hole at the heart of the galaxy was firing unimaginable amounts of radiation into surrounding space and with extraordinary consequences. We could see what was going on at the centre and we could start to underst

英语听力：2013-11-24 地平线：什么害死了我们的蜜蜂—2

They don't live very long on average just a few weeks in the summer time. But in that time they'll fly four or maybe five hundred miles in total. and here's the best part. They are the only insect to provide us with food in the form of liquid gold, h