NASA may have just gotten one step closer to the answering the question: are we alone? The Spitzer Telescope has made a groundbreaking discovery of exoplanets that could be similar to our own. And as Kepler also continues its search, our understanding of the universe continues to be redefined.

A new age of space exploration, and exploitation, is dawning. But surprisingly, some of the boldest efforts at putting humans into space are now those of private companies started by a handful of maverick billionaire businessmen. Beyond mass space travel, and even space mining and manufacturing, the dream of Elon Musk and others is true space exploration. His company, SpaceX, already delivers supplies to the International Space Station, and their next step is delivering astronauts too. But their true ambition is to ensure the survival of the human race by crossing our solar system and colonizing Mars in the next decade. Could commercial spaceflight companies eventually make us a space-faring civilization?

An idea born in unsettled times becomes a feat of engineering excellence. The most complex machine ever built to bring humans to and from space and eventually construct the next stop on the road to space exploration.

Let us take you to one of the most thrilling journeys mankind ever made. Be close witness to the complete mission of both of the Voyager Twins and explore regions mankind never saw before. Even at date the only available material of Uranus and Neptune are the innumerable recordings taken by these probes. All scientific findings made by the Voyager Twins exercised an influence on all following probe missions and actually made them possible.

With unique access to Nasa, Brian Cox follows Perseverance rover’s search for life on Mars during a critical seven-day period as it undertakes an epic journey across the red planet.

BUILT FOR MARS: THE PERSEVERANCE ROVER goes behind the scenes at NASA’s Jet Propulsion Laboratory to follow the birth of the Perseverance rover.

The film features amazing scenes of places never before seen gathered by key space missions that culminated with groundbreaking discoveries in 2015. It features a spectacular flight though the great cliffs on comet 67P, a close look at the fascinating bright "lights" on Ceres, and the first ever close ups of dwarf binary planet Pluto/Charon and its moons.

Did Mars ever have life on it? To answer this question, Europe and Russia have launched a unique and ambitious 2-stage project: ExoMars 2016-2018. This documentary is a thrilling look behind the scenes of a magnificent human and scientific adventure. We will uncover the most fascinating aspects of this mission and the search for signs of life on Mars.

In an age when misinformation, alternative facts, and conspiracy theories have become mainstream, UFOs have risen to become one of the most-talked about pop culture phenomena. With all of this noise, how can we expect anyone to know how much of this is true? What is in our skies? What do we know, and how do we know it? And most importantly: Are we being visited?

An epic journey around Mars — built from real satellite and rover data — revealing the red planet as you’ve never seen it before.

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.

Travel into the world of aviation and explore the dreams of flight with the Smithsonian as they step into the unknown.

Go higher, faster and farther with the Smithsonian as they explore the dreams of flight.

The New Horizons team examines the latest findings and imagery from Pluto and the fringes of our solar system revealing a world unlike any other we've seen before.

Before the joint NASA/ESA Cassini-Huygens mission, humanity only knew what had been learned, decades earlier, with the previous limited, rapid "fly-by" Pioneer and Voyager missions. Cassini-Huygens spent more than 13 years in wildly varied orbits around Saturn, allowing the spacecraft to pass near many of its moons, as well as execute a soft-landing of its Huygens lander on the moon Titan. By mission end, it accumulated a mountain of imagery and scientific data that will continue to be studied for years to come. This film is a testament to the amazing efforts of the scientists who planned and executed the mission. It combines breathtaking images, movies, and a variety of animations to take the viewer into Saturn's complex system of rings and moons, as well as stepping viewers through some of the more exciting scientific discoveries made over the course of the elaborately complex mission.

Apollo 16 mission from NASA footage.

The first effort to send human beings to the Moon coincides during Christmastime on Earth.

Computer animation and footage from NASA space missions explain how our solar system evolved and the place Earth has within the system.