In the early 1900s, Albert Einstein developed an idea - called Relativity - that changed our understanding of reality. It explained how both space and time were flexible - and how the Universe was made of a four-dimensional fabric called space-time. This single idea gave us a new way to understand the force of gravity, explained how the stars were born and introduced us to the concept of the big bang. And, in the hands of Stephen Hawking, it allowed us to understand the most extreme monsters in the Universe - black holes. This two-part BBC documentary explores how two of the most famous scientists of the 20th Century transformed our understanding of the Universe - thus changing the world.

Astrophysicists show how black holes might hold answers to how the universe evolved, leading to life on Earth and, ultimately, the human race.

With a large scale video environment, Rachel Mason creates a virtual black hole, where her song cycle becomes a score for gravitational waves, and renowned dancer and choreographer Oguri inhabits a dimension beyond earth. Mason was inspired by her interviews with some of the most provocative thinkers about the physics of black holes and the poetics of visualizing such immense phenomena.

Matthew McConaughey narrates a fascinating look at Christopher Nolan's sci-fi film "Interstellar," including scientific foundations, the work of consulting Scientist Kip Thorne, basic film themes, the science behind the search for planets capable of hosting life, space-time and the theory of relativity, the science of wormholes and black holes, crafting the film's visuals based on real scientific observation, the birth of the universe, the Dust Bowl and the evolution of dust as a toxin, the likelihood of future dust storms, the prospects of escaping a dying or doomed planet and the possibilities of colonizing Mars.

Cast and crew of Christopher Nolan's "Interstellar" discuss project origins, the film's imagery, ambitions, incorporating IMAX footage, the human element within the film, arm shooting locations outside of Calgary, the set construction and design, working with real corn, mechanical characters, including backstory, design, the blend of practical and digital effects in bringing them to life, the differences in the characters, the human performances behind the characters, the creative process behind the film's music, Icelandic locations, vehicle interiors, the processes of simulating the absence of gravity, the crucial end-film visuals and influence and inspiration for future generations

Hawking is the extraordinary story of the planet's most famous living scientist, told for the first time in his own words and by those closest to him. Made with unique access to Hawking's private life, this is an intimate and moving journey into Stephen's world, both past and present. An inspirational portrait of an iconic figure, Hawking relates his incredible personal journey from boyhood under-achiever, to PhD genius, to being diagnosed with Motor Neuron Disease and given just two years to live. Despite the constant threat of death, Hawking manages to make many remarkable scientific discoveries and rises to fame and super-stardom. Hawking - a remarkable man, and a remarkable movie.

Physicists Leonard and Sheldon find their nerd-centric social circle with pals Howard and Raj expanding when aspiring actress Penny moves in next door.

This shows physicist Stephen Hawking's life as he deals with the ALS that renders him immobile and unable to speak without the use of a computer. Hawking's friends, family, classmates, and peers are interviewed not only about his theories but the man himself.

This series explores the lives and work of noted modern-day astronomers, taking the viewer into the farthest reaches of outer space in search of black holes, quasars, dark matter, gravity waves, stars and evidence of planets outside our solar system. Intriguing celestial phenomena are examined from the perspectives of the experts: the men and women that are uncovering the secrets of the cosmos. Further, the series focuses not only on professional achievements, but on the scientists' personal lives as well.