Mysteries of the Universe: Our Solar System

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

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.