The centre of our galaxy is home to an invisible monster of unimaginable power – a supermassive black hole named Sagittarius A star, with four million times the mass of the Sun. Recent astronomical breakthroughs have confirmed not only that black holes like Sagittarius A star 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, 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. Over billions of years, Sagittarius A star feasted on nearby gas, stars, and through cataclysmic mergers with other black holes. A breakthrough discovery by Nasa’s Fermi gamma-ray telescope has shown that our black hole had the power to sculpt the entire galaxy, creating vast bubbles of gas above and below our galaxy and even protecting stars systems as ours.
In a mind-bending conclusion, Brian Cox reveals how our modern understanding of black holes is challenging our concepts of reality to the breaking point. In trying to understand the fate of objects that fall into Sagittarius A star, 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.

The definitive story of cinema’s most iconic figure, from an impoverished childhood in London through a spectacular rise to fame, until his scandalous fall from grace and a self-imposed exile. His stage persona and incendiary media portrayal defined how he was perceived, but his private life has always been shrouded in mystery - until now. Never-before-heard recordings, intimate home movies and newly restored classic films reveal a side to Chaplin that the world never got to see.
Filmmakers Spinney and Middleton shed light on Chaplin’s family life, his contentious relation to the political commotions of the 20th century, and artistic genius.

The architectural design of Beijing's ancient complex of palaces and temples enabled it to survive centuries of earthquakes. The Forbidden City is the world’s biggest and most extravagant palace complex ever built. For five centuries, it was the power center of imperial China and survived wars, revolution, fires, and earthquakes. How did the Ming Emperor’s workforce construct its sprawling array of nearly 1,000 buildings and dozens of temples in a little over a decade?

Scientists on the BICEP and Planck missions are attempting to solve a mystery about the earliest moments of our universe, by searching for patterns in the Cosmic Microwave Background (CMB). If successful, the missions will help to answer the biggest question anyone can ask: how did our universe begin?

(click CC for subtitles) 'a-ha' is Norway's only international pop band and their hit 'Take On Me' is still one of the most-played songs of the last millennium. The film follows the band over a period of four years, telling the full story of how three young men followed their impossible dream of becoming Norwegian pop stars. When 'Take On Me' reached number 1 on Billboard in the US in 1985, the dream came true. Or did it?
Almost 35 years after their breakthrough, a-ha still creates magic on stage with their melancholic and timeless music. They tour the world but drive in separate cars and stay in separate hotel rooms. They only meet on stage, doing the one thing they love. The film closely portrays the challenging creative and personal dynamics of a group of three strong individuals who have grown up together, but in different directions. What does success do to friendship? Why are they not capable of creating new music together anymore? This is a story of great music, big ambitions, broken friendship--and maybe forgiveness.

Sultan Mehmed II's siege of Constantinople enters its third week. Mehmed's artillery teams continue their relentless bombardment of Constantinople's walls. After his navy suffers a devastating defeat, Mehmed moves his ships overland to the Golden Horn in a daring, visionary feat. In the shadow of betrayal, Giustiniani attacks the Ottoman fleet.