Episode 1
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.
Episode 2
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.
Episode 3
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.
Episode 4
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.
