L'expansion de l'Univers est elle infinie ?

In this two-hour special, NOVA examines how a simple instrument, the telescope, has fundamentally changed our understanding of our place in the universe. What began as a curiosity - two spectacle lenses held a foot apart - ultimately revolutionized human thought across science, philosophy, and religion. "Hunting the Edge of Space" takes viewers on a global adventure of discovery, dramatizing the innovations in technology and the achievements in science that have marked the rich history of the telescope.

Traveling to the far corners of the world, we discover the extraordinary ways animals are adapting to our rapidly changing planet. We witness nature’s remarkable resilience, as our perception of evolution and its potential is forever transformed.

In honor of his 95th birthday, a look at Sir David Attenborough’s life and contributions to broadcasting and the natural world. Presented by BBC.

Consistently stunning documentaries transport viewers to far-flung locations ranging from the torrid African plains to the chilly splendours of icy Antarctica. The show's primary focus is on animals and ecosystems around the world. A comic book based on the show, meant to be used an as educational tool for kids, was briefly distributed to museums and schools at no cost in the mid-2000s.

A documentary telling the remarkable human story of Stephen Hawking. For the first time, the personal archives and the testimonies of his closest family reveal both the scale of Hawking's triumphs and the real cost of his disability and success.

PBS' premier science series helps viewers of all ages explore the science behind the headlines. Along the way, NOVA demystifies science and technology, and highlights the people involved in scientific pursuits.

Before man ruled the world, Earth was a land of giants, from birds with plane-length wingspans to Boeing 737- sized dinosaurs. Count down the biggest beasts in this spectacular special.

From strange abductions, to mutated species, to bizarre occurrences, there are some phenomena that science cannot - or will not - explain. This summer Science Channel unveils some of these shocking and mind-boggling cases from around the world in the world premiere series THE UNEXPLAINED FILES. From mysterious disappearances and UFO encounters, to unidentified fanged predators and reported curses, THE UNEXPLAINED FILES investigates actual, inexplicable occurrences that have confounded scientists and inspired legends. Science Channel invites viewers on a mystifying journey that will challenge disbelief with THE UNEXPLAINED FILES.

An intimate portrait of Sir David Attenborough's life, from his boyhood days as a fossil hunter, through his early days as a BBC host, to his revered status as the foremost natural history presenter.