A tour of the stunning volcanoes and canyons of Mars.

Documentary series tracing mankind's exploration of the solar system.

"Naked Science" strips away the layers of a scientific investigation into one of the big mysteries of our time, revealing through expert analysis realistic scenarios that either confirm or deny long-held assumptions and misconceptions.

A new breed of explorer has taken space travel beyond the moon to unlock and reveal first-ever views of alien worlds and cosmic bodies far beyond anyone's imagination. "Space's Deepest Secrets" shares stories of the men and women who pushed their ingenuity and curiosity to uncover some of the most groundbreaking findings in the history of space exploration. Hourlong episodes cover NASA's New Horizons mission to Pluto, the Hubble Telescope, the twin Voyager explorations, and other past, current and future missions and projects.

This co-production of the BBC and the Science Channel is hosted by physicist Brian Cox ("Wonders of the Universe"), who is fascinated by the wonders of our planet and the laws of nature that created them. In this five-part series he travels the globe to examine some of the most compelling phenomena, demonstrating the power of the sun as he watches a total solar eclipse in India and the Aurora Borealis in Norway. In addition to the breathtaking footage, viewers can learn about the power of the forces of nature and their impact on the planet in this Peabody Award-winning documentary series.

From the award-winning team of filmmaker Darren Aronofsky ("Black Swan") and producer Jane Root ("America the Story of Us"), this 10-part cinematic event series explores the fragility and wonder of planet Earth -- one of the most peculiar, unique places in the universe. Host Will Smith guides viewers on an unprecedented exploration, bolstered by an elite group of eight astronauts who provide unique perspectives and relate personal memoirs of the planet seen from a distance. Hourlong episodes delve into monumental events such as genesis, cosmic violence, human intelligence and alien life, oxygen, and survival vs. destruction.

The planet is teeming with myriad life forms, both plant and animal, all interlocked in a struggle for survival. As time goes on, some living things are forced to adapt and change to survive. This series chronicles some of the most unusual, if not downright bizarre, behaviors that living organisms have devised to keep their species alive. The 11-episode series was four years in the making, taking camera crews to every continent and habitat.

The Florida Everglades' Big Cypress Swamp, under the governance of people of the Seminole tribe, is home to more than 1,600 animals that run wild on thousands of acres. The Billie Swamp Safari offers visitors a chance to come face to face with the animals, ranging from ostriches and bison to venomous snakes and raccoons. The goal -- in line with Native Americans' love of harmony with nature -- is to immerse the visitors in the wild. But these close encounters sometimes lead to danger ... for both the people and the wildlife. The park's director, Ed Woods, and his tough team of self-described "swamp men" patrol the land to move animals out of dangerous situations and rescue animals in need.

Dazzling, state-of-the-art high-definition imagery highlights this breathtaking documentary series featuring footage of some of the world's most awe-inspiring natural wonders -- from the oceans to the deserts to the polar ice caps. Actress Sigourney Weaver narrates this American version of the original BBC production.