Supermassive Black Holes 超大质量黑洞 - 15

In January 2000, John Dubinski set out to calculate the final fate of our galaxy, the Milky Way, and that of our nearest neighbor, Andromeda. The Andromeda galaxy is actually falling towards the Milky

Supermassive Black Holes 超大质量黑洞 - 14

It means that Silk and Ree's theory may be right and if it is also right that supermassive black holes helped trigger star formation, then it must mean that all giant black holes and their galaxies ar

Supermassive Black Holes 超大质量黑洞 - 6

When the results came down from the telescope he saw something that was completely unexpected. The picture from the active galaxy where he hoped to find a black hole was unreadable. NGC 1068 was just

Supermassive Black Holes 超大质量黑洞 - 3

A supermassive black hole is quite simply gravity gone mad. An object of such concentrated matter its gravitational pull is insatiable. Nothing can escape it, not even light itself. Anything that gets

Supermassive Black Holes 超大质量黑洞 - 11

Those stars don't feel the black hole. They feel the rest of the stars in the galaxy. They don't know or care that the black hole is there. If you took the black hole away from the galaxy, they would

Supermassive Black Holes 超大质量黑洞 - 10

If, as it now seems, every single galaxy has a black hole at its heart, this can't be a coincidence. Perhaps black holes are an essential part of what galaxies are and how they work. No one had expect

Supermassive Black Holes 超大质量黑洞 - 13

Silk realized that the energy from this newly formed quasar would create intense temperature changes in the surrounding gas. This would cause the gas around the black hole and its newly formed quasar

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 from our solar system is the centre of our galaxy. If we were ever going to have a chance of seeing a b

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 we call the Milky Way. That bright strip across the sky with its extraordinary abundance of stars and

英语听力：2013-09-27 地平线：黑洞吞噬—4

But if watching matter tumble over the edge of a black hole might now be possible, it is only because of the efforts of a generation of astronomers to wrestle these dark dragons of the cosmos into the realms of scientific reality. As is often the cas

英语听力：2013-09-18 地平线：黑洞吞噬—1

Nothing is more seductive than the unknown, nothing more compelling than a place of danger that lies beyond normal comprehension. Of all those places, perhaps the strangest of all are black holes. They are an exit point from the Universe, hidden trap

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：2013-11-03 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：2013-11-06 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：2013-11-10 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：2013-11-15 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：2013-11-17 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：2013-11-20 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：2013-10-16 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：2013-10-13 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