2015-04-22 BBC:星光七纪元-27

The enigma of the white dwarf has been resolved. Scientists have discovered how the vast majority of the stars, including our own sun, would end their days, as the white dwarfs gently fading into the darkness of the universe. But not all stars go so

2015-04-17 BBC:星光七纪元-26

Thats why what we physicists called pressure. This pressure is created as the particles jostle for position. Its a principle of Quantum Mechanics and when it was applying to stars, the lives of dead white dwarfs suddenly made sense. What stopped them

2015-04-15 BBC:星光七纪元-25

Once the fusion stops, the whole thing collapses under its own weight to form a white dwarf, so you got this very small blob which is incredibly dense, it's going to be something like a million times denser than it started off, so dense in fact that

2015-05-15 BBC:星光七纪元-34

He was sure that when a supernova exploded, it left behind a kernel so dense that a cupful would be as heavy as a mountain, he called it a neutron star, it seems so preposterous that Z's ideas were dismissed, until that is a new way of scouring the h

2015-07-24 BBC:巨石阵行动:被埋藏的秘密-10

Then, around 8200 years ago, climate change had dramatic impact on the destiny of Stonehenge landscape. As the last ice age thawed, rising melt waters engulfed the territory known as Dogland and Britain became an island. Cut off from continental infl

2015-07-22 BBC:巨石阵行动:被埋藏的秘密-9

But Mesolithic hunt gatherers had no rational explanation for this vivid change in the flint. It would be the most extraordinary magic thing in the Mesolithic to see a transformation like this. They were living at a time when the color palette was do

2015-07-17 BBC:巨石阵行动:被埋藏的秘密-8

We are in a really extraordinary place here. I mean this is almost like a time capsule. There is very little landscape change extraordinarily from *. So it is a special place. The unexpected discovery of a rare and actual phenomenon, may also explain

2015-07-15 BBC:巨石阵行动:被埋藏的秘密-7

It would be a brilliant place for hunt together as to hides and observe the movements of these huge animals. Topographical scans have revealed the contours of this ancient landscape, features that mesolithic kind togetherness could exploit. Where the

2015-07-10 BBC:巨石阵行动:被埋藏的秘密-6

These are just samples of amazing finds weve got from these sites. Weve got quite domestic looking tools. These types of things were probably to have been used to pierce holes in animal skin. We also found much bigger tools. This is an absolutely bri

2015-07-08 BBC:巨石阵行动:被埋藏的秘密-5

-It's just a sample of the amazing finds we've got from this site. We've got quite domestic-looking tools. This type of thing were probably being used to p* holes in animal skin. We've also found much bigger tools. This is an absolutely brilliant * s

2015-07-03 BBC:巨石阵行动:被埋藏的秘密-4

Recently at a site only two kilomtres to the southeast, archaeologists have unearthed the first traces of people living in the same period. It's a find that may finally answer why stonehenges located where it is. Here is the section through one of th

2015-07-01 BBC:巨石阵行动:被埋藏的秘密-3

The most ambitious of these studies is the Stonehenge Hidden Landscapes Project, led by experts from Birmingham University And Ludwig Boltzmann Institute in Austria.-As people walk over the Stonehenge landscape, they are aware of Stonehenge. They may

2015-06-26 BBC:巨石阵行动:被埋藏的秘密-2

In just 5 years, 21th century archaeology has achieved what the conventional excavation would have taken a life time to complete, revealing a picture of Stoneghenge and its people as never before. Recent times have seen an intense level of activity a

2015-06-19 BBC:星光七纪元-44

We may never know for sure whether there is life elsewhere. But we do know a lot about where we came from. And thats because weve learned so much about things here on earth from looking far out into space. They discover that stars are not turned out

2015-06-17 BBC:星光七纪元-43

These are just the whole host of compounds we make. We found many of these compounds are very interesting because they play roles in life on earth. So, its clear we were making many the building blocks of life by these very processes that happened in

2015-06-12 BBC:星光七纪元-42

Even for NASA nebulae are too far away to visit, so they've built one of their own here on earth, 40 years ago scientists peered into the clouds of dust and gas created from the remains of stars, and to their surprise, found not just elements but org

2015-06-10 BBC:星光七纪元-41

Scientists call it the Big Bang and it was predicted by the very same equations that discovered black holes.There is the Big Bang theory, according to which the universe began with a gigantic fireball on creation day, some 10,000 million years ago. I

2015-06-05 BBC:星光七纪元-40

The evidence suggested that billions of tons of matter from a massive star had shrunk to nothing.So what we are left with here is this mind-boggling idea of mass contained in zero volume, and that just make your head spin, but that's what we call a b

2015-06-24 BBC:巨石阵行动:被埋藏的秘密-1

The megaliths of Stonehenge are Britons most investigated monument. Yet despite centuries of scrutiny, excavations and theories, the big question remain. What were its origins? How did it evolve over thousands of years and which forces of nature and

2015-08-12 BBC:巨石阵行动:被埋藏的秘密-15

-Crickley Hill gives us a completely new picture of the scale of violence in prehistoric Britain. It's really the first time that we see evidence for warfare between sub-communities or even groups of communities on a completely different scale to wha