标签：BBC地平线 相关文章
One thing that excited him for many years is just how advanced their communication is, especially their famous waggle dance, returning from a foraging trip, this bee is telling its coworkers precisely where she found her pollen. They just use the bod
探索与发现2013年
Our second suspects, pesticides, are the most controversial. This year the European commission analyzed the two-year-ban on the use of called Neony Cortenoise. They said the evidence now showed that they were in unacceptable danger to bees feeding on
探索与发现2013年
-So these look terribly small, almost mistaken as mosquitoes.-Yeah, we could do, but I see them that they got two pairs of wings. -And actually they are proper bees. How did you find them be there? -So... Well, essentially it's the h* so these small
探索与发现2013年
And each time the radar switch past, a white mark reveals the position of the bee.-OK. Bees're coming back. The five bees are coming back. The radar records each excessive loop the bee makes until she returns safely to the hive. -Bees at hive. Bees a
探索与发现2013年
-You catch it the moment I see it, put it into a container like this, which contains 15 milligram of so-called solution.The bees are fed one of two different solutions. -We have c** which are fed with pesticide. We develop it in the circle solution a
探索与发现2013年
This is good honey. It's very good honey. Yeah, it's very good honey. And this is the honey from the Refuday Tegmoden. Tegmoden,... is not very far, is it? Emnh, now the distance between the hive that produce this and the hive that produce that, how
探索与发现2014年
-Do we have any fruits?-No fruits. There's no fruits available today. -Perhaps some tomatoes? -Tomatoes? No, no. Absolutely no tomatoes. It's fruit pollinated by bees. Like it, enjoy your meal? -No, it's little bit dry, though. -Bit bland. -OK. You m
探索与发现2013年
How Far Away Is The Horizon? 地平线有多远？ Heres a neat question you may have never thought to ask. How far away is the horizon? 你可能从未思考过这个简单的问题，地平线有多远？ Flat Earth 地球是平的 Think about it.
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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
探索与发现2013年
It suggested a baffling paradox that quasars are really shining black holes, capable of emitting the energy of entire galaxies. But Lynden-Bell then went further. I predicted that there would be these massive objects found in the nearby galaxies. He
探索与发现2013年
The mystery of what could count for the quasars' extraordinary brightness was the hot topic in astronomy during the 1960s. As astronomers began to grapple with the new enigmatic objects that had been found by the radio telescopes, one astronomer, kee
探索与发现2013年
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 energy as a hundred of galaxies. And they didnt look like a galaxy at all. The paradox was how some
探索与发现2013年
Theres nothing anywhere near as extreme as a black hole. The disturbing truth about black holes is that there are boundary between the known universe and the place that would forever lie beyond the reach of science. They are in an anomaly of gravity
探索与发现2013年
High above your head, in the centre of our Milky Way Galaxy, a violent drama is about to unfold. Our super-massive black hole is getting ready to have dinner. As a gas cloud three times the size of the Earth, its caught in its gravitational hold. Acr
探索与发现2013年
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
探索与发现2013年
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
探索与发现2013年
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
探索与发现2013年
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
探索与发现2013年
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
探索与发现2013年
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
探索与发现2013年