Nasa is to wake up its New Horizons spacecraft next month following a five month hibernation, ahead of a journey deeper into one of the most mysterious regions of the Solar System. New Horizons, which captured incredible images of Pluto in July 2015, was powered down in April to conserve energy as it travelled through the Kuiper Belt, a vast region of icy debris which encircles the Sun and planets, also known as The Third Zone. On September 11, the spacecraft will awaken for its 16 month journey to MU69, an ancient object which is thought to be one of the early building blocks of the Solar System. The space rock had not even been discovered when the craft launched in 2006 and the flyby will be the most distant in the history of space exploration, a billion miles beyond Pluto, and four billion miles from Earth. Recent observations of MU69 from the Hubble Space Telescope show it is probably two 'binary' objects or a pair of space rocks 'stuck-together' bodies which are each around 12