Humanity's conquest of Mars became a reality with the Viking missions of the 1970s, and some experts believe that evidence gathered from these incredible explorations proves that there was once life on the Red Planet.

Jupiter is a giant ball of liquid metal covered in violent storms, but there could be evidence of alien life; using the latest technology, experts uncover new discoveries from NASA's missions to reveal the truth.

When a team of scientists have launched a space probe to the heart of our solar system in brand-new mission to our Sun, it makes fresh discoveries reveal how it works; along the way, experts uncover a surprise find on Mercury.

From the raging inferno of the Sun to the icy beauty of Pluto, experts investigate the secrets that have lingered in the Solar System for billions of years in cutting-edge missions to infinity and beyond.

Venus is a hellish alien world believed to be impossible to extraterrestrial life; but new discoveries reveal shocking evidence within its deadly atmosphere and on its strange surface, all pointing to a possible future for planet Earth.

Saturn is the crown jewel of the solar system, and using the latest discoveries, some of the world's top experts seek to unravel the mystery of why its extensive ring system exists and if any of its many moons could harbor alien life.