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Are Black Holes Real

   2018    Science    HD
Various eminent scientists explain the current knowledge of Black Holes and try to answer the question, do they really exist? New discoveries are challenging everything we know about black holes -- astronomers are beginning to question if they even exist. The latest science tries to explain how they work & what they look like, despite the fact we've never actually seen one.
The two great theories of Einstein's General Relativity and Quantum Mechanics don't work together to explain Black Holes which is a big problem. Other theoretical constructs such as Gravastars and Planck stars have been postulated but proving their existence is just as difficult as that of Black Holes. So where next?
Series: How the Universe Works Season 6

Second Genesis

   2018    Technology
In episode 3, Artemis arrives on the exoplanet Minerva B, but will she find evidence of life? This is a vision of our future, the fateful day in a far-flung corner of the universe, when a probe from Earth initiates the first descent onto an alien world, looking for proof of life beyond our solar system.
There are no witnesses, no cheering crowds in the control room. A decade or more will pass before news finally reaches us, back across the dark oceans of space. But the seeds of this mission are already being sowed today by the first generation of scientists bold enough to believe it could be possible.
Series: Living Universe

The Invisible Universe

   2018    Science
It is one of the most unnerving discoveries in space science - that most of the universe is missing. We live in a material world, so instinctively we know what normal matter is - the world around us, the planets, stars and interstellar dust. But scientists currently estimate that 95 per cent of everything in the universe is actually - one way or another - invisible.
Some of this is ordinary matter that we just can't easily see. But there's also stuff that's much more weird. For instance, there's a new kind of matter we think is out there, but whose very existence is still largely hypothetical - dark matter. And most mysteriously of all, scientists think there is an unknown form of energy pervading the universe that we know so little about, all it has so far is a name - dark energy. Embark on a tour of this invisible universe, and shows how its existence - or lack of it - will define the fate of the entire universe.
Series: The Sky at Night

What is our future

   2014    Technology
Professor Brian Cox concludes his exploration of our place in the universe by asking what next for the ape that went to space. Our future is far from certain. In Florida, Brian joins the latest efforts to protect Earth from potential catastrophic events. He joins a team of Nasa astronauts who are training for a future mission to an asteroid - should we ever discover one coming our way - under 30 feet of water in a submerged laboratory that simulates space. It is just one example of how, for our long-term survival, space exploration may well be vital. It is a view shared by Apollo 16 astronaut Charlie Duke, who tells Brian what it was like to escape the confines of the planet. It is a dream that both Nasa and now commercial companies share as they race to get humans back into deep space.
But space travel, like every leap our civilisation has ever made, requires energy. Here too, scientists are hard at work attempting to safeguard our future. At the National Ignition Facility in California, Brian witnesses the world's most successful fusion experiment in action. He believes that if their mission succeeds, our civilisation will have unlocked a way to the stars that will not destroy the planet in the process. Brian concludes by returning to the top of the world in Svalbard, where he gains access to our civilisation's greatest treasure, locked away in a vault buried deep in the permafrost.
Series: Human universe

Mystery Signal from Space

   2018    Science    HD
Deep in the mountains of West Virginia, the Green Bank Observatory has been receiving a mysterious signal from deep space. A team of astronomers has been detecting high-energy bursts erupting from unknown sources far off in space since years ago. But one of them is different from the rest. They call it FRB 121102.
What is actually giving rise to this very powerful flash? Could this be a message from an advanced civilization, or is it a much stranger and violent occurrence? Visit the largest steerable radio telescope on the planet for answers.
Superstructures: Engineering Marvels
Superstructures: Engineering Marvels

   2019    Technology
Earth from Space
Earth from Space

   2019    Nature
A History of Christianity
A History of Christianity

   2011    History
Inside the Medieval Mind
Inside the Medieval Mind

   2008    History
Shine a Light
Shine a Light

   2008    Art
The Human Body
The Human Body

   1998    Medicine
Through the Wormhole Season 5
Through the Wormhole Season 5

   2014    Nature