How to See a Black Hole: The Universe's Greatest Mystery

National Geographic and NASA are sending you into space - live! For the first time ever, board the International Space Station and take a complete orbit of Earth in real time.

Standing almost alone in the great Southern Ocean, South Georgia island plays host to some of the largest concentrations of animals anywhere on Earth during the spring and summer months. This is the story of these vast animal cities, and of the order that lies beneath their seeming chaos.

BBC The Natural World. In 2004, a team from the Planet Earth series captured the first ever film of a wild snow leopard in the mountains of Pakistan. For Nisar Malik, who led the expedition, these images sparked a passion that compelled him to return. With cameraman Mark Smith, he spent two years documenting the snow leopard's daily life, finally lifting the veil on the most elusive of all cats.

A documentary of insect life in meadows and ponds, using incredible close-ups, slow motion, and time-lapse photography. It includes bees collecting nectar, ladybugs eating mites, snails mating, spiders wrapping their catch, a scarab beetle relentlessly pushing its ball of dung uphill, endless lines of caterpillars, an underwater spider creating an air bubble to live in, and a mosquito hatching.

Groundbreaking documentary which follows a Japanese-led team of scientists as they attempt to shed light on the mysterious world of deep sea sharks. Only 50 specimens of the newly discovered 'megamouth' have ever been sighted. Over four years, scientists and film crews voyaged in midget submarines into the depths of Suruga Bay and Sagami Bay to film them. Prehistoric 'living fossil' sharks such as bluntnose sixgill sharks, goblin sharks and frilled sharks also lurk in the depths. As part of the investigation, a sperm whale carcass was placed at the bottom of the sea to attract these sharks, which were then studied and observed from the submersible vessels. Revealing in detail the previously unknown behaviour of deep sea sharks, the film unravels another of the intriguing mysteries of our planet's biodiversity.

The highest mountain range in the world, the Himalayan range is far reaching, spanning thousands of miles, and holds within it an exceptionally diverse ecology. Coniferous and subtropical forests, wetlands, and montane grasslands are as much a part of this world as the inhospitable, frozen mountaintops that tower above. The word Himalaya is Sanskrit for abode of snow, fitting for a stretch of land that houses the world’s largest non polar ice masses. Extensive glacial networks feed Asia's major rivers including the Ganges, Indus, and Brahmaputra. More than a billion people rely on these glacier-fed water sources for drinking water and agriculture. The Himalayas are not only a remarkable expanse of natural beauty. They're also crucial for our survival.

Follows life of Malika, a lioness in South Africa’s Kruger National Park as she battles to survive.

Described as being a film about determination, danger and the ocean’s greatest depths, James Cameron's "Deepsea Challenge 3D" tells the story of Cameron’s journey to fulfill his boyhood dream of becoming an explorer. The movie offers a unique insight into Cameron's world as he makes that dream reality – and makes history – by becoming the first person to travel solo to the deepest point on the planet.

In one single, epic camera move we journey from Earth's surface to the outermost reaches of the universe on a grand tour of the cosmos, to explore newborn stars, distant planets, black holes and beyond.

The Pantanal's Rebel Lake

A feature-length documentary about the film Galaxy Quest and its legacy, celebrating its milestone 20th anniversary.

The Alps – wild mountains, extreme lives, but also a magical world. This majestic mountain range connects eight countries and reaches heights of up to 4,000 metres above sea level. At a length of 1,200 kilometres, the Alps form both a connecting bridge between western and eastern Europe and a high barrier between southern and central Europe. The mountains act as a mighty water reservoir and continental watershed, feeding innumerable rivers that flow into three different oceans. Their highest peak, Mont Blanc, is surrounded by long, soaring mountains with ice-covered slopes. These great summits are just one reason the so-called “Roof of Europe” continues to fascinate – across the continent and around the world. The incredible diversity of landscapes, flora and fauna makes the Alps a unique natural treasure at the heart of Europe.

Every year, on the steppes of the Serengeti, the most spectacular migration of animals on our planet: Around two million wildebeest, Burchell's zebra and Thomson's gazelles begin their tour of nearly 2,000 miles across the almost treeless savannah. For the first time, a documentary captures stunning footage in the midst of this demanding journey. The documentary starts at the beginning of the year, when more than two million animals gather in the shadow of the volcanoes on the southern edge of the Serengeti in order to birth their offspring. In just two weeks, the animal herd's population has increased by one third, and after only two days, the calves can already run as fast as the adults The young wildebeest in this phase of their life are the most vulnerable to attacks by lions, cheetahs, leopards or hyenas. The film then follows the survivors of these attacks through the next three months on their incredible journey, a trip so long that 200,000 wildebeest will not reach the end.

The culture of Japan is incredible, from bloom festivals to ultra-modern cities. But there are also more than 130 mammals and 600 bird species dwelling in Japan’s 6,852 islands. This island chain is long enough to span climate zones, providing a huge range of habitat.

A close examination of the Whakaari / White Island volcanic eruption of 2019 in which 22 lives were lost, the film viscerally recounts a day when ordinary people were called upon to do extraordinary things, placing this tragic event within the larger context of nature, resilience, and the power of our shared humanity.

Join the Mars rovers Spirit and Opportunity for an awe-inspiring journey to the surface of the mysterious red planet.

Some 220 miles above Earth lies the International Space Station, a one-of-a-kind outer space laboratory that 16 nations came together to build. Get a behind-the-scenes look at the making of this extraordinary structure in this spectacular IMAX film. Viewers will blast off from Florida's Kennedy Space Center and the Baikonur Cosmodrome in Russia for this incredible journey -- IMAX's first-ever space film. Tom Cruise narrates.

From space, our planet appears as a tiny blue dot in the vastness of space. Blue, because 99% of all living space on Earth occurs in the Ocean. But the seas are under threat. The industrialization that has occurred in the oceans over the last century mirrors the events that triggered mass extinctions on land. As we learn of the ecological crimes occurring worldwide, we also uncover the shocking truths happening on our own shorelines.

Some of the world's most majestic birds display delightfully captivating mating rituals, from flashy dancing to flaunting their colorful feathers.

Archival material from the original NASA film footage – much of it seen for the first time – plus interviews with the surviving astronauts, including Jim Lovell, Dave Scott, John Young, Gene Cernan, Mike Collins, Buzz Aldrin, Alan Bean, Edgar Mitchell, Charlie Duke and Harrison Schmitt.