仰望星空，多么美好的一个词。 　　140亿年前，天地混沌。大爆炸产生万物，我们的宇宙诞生了。科学界就是这么解释，宇宙诞生那一刻的。然而新一代的宇宙学家们开始质疑，关于宇宙的起源，关于我们对宇宙的一些基本了解，是不是真的正确。 　　本片从宇宙学标准模型讲起，从暴胀理论，到暗物质及寻找暗物质的研究，到暗能量，及暗流的理论。最后会得出怎样的结论呢？ 　　There's something very odd going on in space - something that shouldn't be possible. It is as though vast swathes of the universe are being hoovered up by a vast and unseen celestial vacuum cleaner. 　　Sasha Kaslinsky, the scientist who discovered the phenomenon, is understandably nervous: 'It left us quite unsettled and jittery' he says, 'because this is not something we planned to find'. The accidental discovery of what is ominously being called 'dark flow' not only has implications for the destinies of large numbers of galaxies - it also means that large numbers of scientists might have to find a new way of understanding the universe. 　　Dark flow is the latest in a long line of phenomena that have threatened to re-write the textbooks. Does it herald a new era of understanding, or does it simply mean that everything we know about the universe is wrong?

仰望星空，多么美好的一个词。 　　140亿年前，天地混沌。大爆炸产生万物，我们的宇宙诞生了。科学界就是这么解释，宇宙诞生那一刻的。然而新一代的宇宙学家们开始质疑，关于宇宙的起源，关于我们对宇宙的一些基本了解，是不是真的正确。 　　本片从宇宙学标准模型讲起，从暴胀理论，到暗物质及寻找暗物质的研究，到暗能量，及暗流的理论。最后会得出怎样的结论呢？ 　　There's something very odd going on in space - something that shouldn't be possible. It is as though vast swathes of the universe are being hoovered up by a vast and unseen celestial vacuum cleaner. 　　Sasha Kaslinsky, the scientist who discovered the phenomenon, is understandably nervous: 'It left us quite unsettled and jittery' he says, 'because this is not something we planned to find'. The accidental discovery of what is ominously being called 'dark flow' not only has implications for the destinies of large numbers of galaxies - it also means that large numbers of scientists might have to find a new way of understanding the universe. 　　Dark flow is the latest in a long line of phenomena that have threatened to re-write the textbooks. Does it herald a new era of understanding, or does it simply mean that everything we know about the universe is wrong?

Horizon plunges down the biggest rabbit-hole in history in search of the smallest thing in the Universe. 　　It is a journey where things don't just become smaller but also a whole lot weirder. Scientists hope to catch a glimpse of miniature black holes, multiple dimensions and even parallel Universes. As they start to explore this wonderland, where nothing is quite what it seems, they may have to rewrite the fundamental laws of time and space.

Horizon plunges down the biggest rabbit-hole in history in search of the smallest thing in the Universe. 　　It is a journey where things don't just become smaller but also a whole lot weirder. Scientists hope to catch a glimpse of miniature black holes, multiple dimensions and even parallel Universes. As they start to explore this wonderland, where nothing is quite what it seems, they may have to rewrite the fundamental laws of time and space.

Volcanoes have long helped shape the Earth. But what is less well known is that there are volcanoes on other planets and moons that are even more extraordinary than those on our own home planet. 　　Horizon follows an international team of volcanologists in Iceland as they draw fascinating parallels between the volcanoes on Earth and those elsewhere in the solar system. Through the team's research, we discover that the largest volcano in the solar system - Olympus Mons on Mars - has been formed in a similar way to those of Iceland, how a small moon of Jupiter - Io - has the most violent eruptions anywhere, and that a moon of Saturn called Enceladus erupts icy geysers from a hidden ocean. Computer graphics combined with original Nasa material reveal the spectacular sights of these amazing volcanoes. 　　Along the way, we learn that volcanoes are not just a destructive force but have been essential to the formation of atmospheres and even life. And through these volcanoes of the solar system, scientists have discovered far more about our own planet - what it was like when Earth first formed, and even what will happen to it in the future.

Volcanoes have long helped shape the Earth. But what is less well known is that there are volcanoes on other planets and moons that are even more extraordinary than those on our own home planet. 　　Horizon follows an international team of volcanologists in Iceland as they draw fascinating parallels between the volcanoes on Earth and those elsewhere in the solar system. Through the team's research, we discover that the largest volcano in the solar system - Olympus Mons on Mars - has been formed in a similar way to those of Iceland, how a small moon of Jupiter - Io - has the most violent eruptions anywhere, and that a moon of Saturn called Enceladus erupts icy geysers from a hidden ocean. Computer graphics combined with original Nasa material reveal the spectacular sights of these amazing volcanoes. 　　Along the way, we learn that volcanoes are not just a destructive force but have been essential to the formation of atmospheres and even life. And through these volcanoes of the solar system, scientists have discovered far more about our own planet - what it was like when Earth first formed, and even what will happen to it in the future.

Adventurer and journalist Simon Reeve heads to Cuba to find a communist country in the middle of a capitalist revolution. Two years ago Cuba announced the most sweeping and radical economic reforms the country has seen in decades. From ending state rationing to cutting one million public-sector jobs, one of the last communist bastions in the world has begun rolling back the state on an unprecedented scale. Simon Reeve meets ordinary Cubans whose lives are being transformed, from the owners of fledgling businesses to the newly rich estate agents selling properties worth up to 750,000 pounds. 　　In this hour-long documentary for the BBC's award-winning This World strand, Simon gets under the skin of a colourful and vibrant country famous for its hospitality and humour and asks if this new economic openness could lead to political liberalisation in a totalitarian country with a poor human rights record. Will Cuba be able to maintain the positive aspects of its long isolation under socialism - low crime, top-notch education and one of the best health systems in the world - while embracing what certainly looks like capitalism? Is this the last chance to see Cuba before it becomes just like any other country?

Adventurer and journalist Simon Reeve heads to Cuba to find a communist country in the middle of a capitalist revolution. Two years ago Cuba announced the most sweeping and radical economic reforms the country has seen in decades. From ending state rationing to cutting one million public-sector jobs, one of the last communist bastions in the world has begun rolling back the state on an unprecedented scale. Simon Reeve meets ordinary Cubans whose lives are being transformed, from the owners of fledgling businesses to the newly rich estate agents selling properties worth up to 750,000 pounds. 　　In this hour-long documentary for the BBC's award-winning This World strand, Simon gets under the skin of a colourful and vibrant country famous for its hospitality and humour and asks if this new economic openness could lead to political liberalisation in a totalitarian country with a poor human rights record. Will Cuba be able to maintain the positive aspects of its long isolation under socialism - low crime, top-notch education and one of the best health systems in the world - while embracing what certainly looks like capitalism? Is this the last chance to see Cuba before it becomes just like any other country?