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Rogue planets, fossilised stars, black holes more massive than a million Suns. Huge advances in our understanding of the Universe mean that for the first time the BBC can take you to places we didn’t even know existed just ten years ago.
Across five episodes, Professor Brian Cox roams the vastness of space and time uncovering exquisite moments of sheer drama that changed the Universe forever. Watch the birth of a star in a stellar nursery, experience the power of a supermassive black hole as it consumes an entire planet, and witness the chaos created as another galaxy collides with our own galaxy, The Milky Way.
Season 1 - Episode 4 - Black Holes: Heart of Darkness
Professor Brian Cox continues his epic exploration of the universe with a journey into darkness. The centre of our galaxy is home to an invisible monster of unimaginable power – a supermassive black hole named Sagittarius A*. Weighing 4 million times the mass of the Sun, it’s an object with such an immense gravitational field that nothing can escape – not even light.
For decades, black holes existed purely in the minds of theoretical physicists – the idea was so absurd, scientists thought they couldn’t possibly exist in nature. But recent astronomical breakthroughs have confirmed, not only that black holes like Sagittarius A* exist, but that these bizarre invisible objects may be the ultimate galactic protagonists.
Stunning CGI takes us back to witness the fiery origins of our galaxy’s black hole 13.6 billion years ago, when the early universe was home to colossal blue stars hundreds of times more massive than our sun. These stars lived fast and died young, and when they ran out of fuel they collapsed under their own enormous mass, crushing down into an object so small and so dense it punched a hole in the fabric of the universe. Our galaxy’s black hole was born.
The story of Sagittarius A* is a tale of both destruction and creation. Over billions of years it feasted on nearby gas and stars and through cataclysmic mergers with other black holes it sent ripples through the fabric of the Universe. But Brian reveals that we have recently come to understand how our black hole is also an agent of creation. A breakthrough discovery by NASA’s Fermi gamma-ray telescope has shown that our black hole once had the power to sculpt the entire galaxy, creating vast bubbles of gas above and below our galaxy that persist to this day. We may even have Sagittarius A* to thank for our own existence.
In a mind-bending conclusion Brian reveals how our modern understanding of black holes is challenging our concepts of reality to breaking point. He takes us on a trip inside Sagittarius A* where we discover that the interior of a black hole is not a tomb, it’s a gateway to the end of the Universe. And weirder still – in trying to understand the fate of objects that fall into Sagittarius A*, scientists have come to a stunning conclusion: space and time, concepts so foundational to how we experience the world around us, are not as fundamental as we once thought.
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