This series consists of four collector coins. The obverse features an astronaut looking at Earth with stars reflected in his helmet. The Moon, mankind's first destination outside Earth, can also be seen. The reverse side shows the Earth, the Moon, Mars, Jupiter and Saturn, linked together by the outline of a rocket in full exploration mode. This series is completed by commemorative coins featuring the main planets of our solar system, colourised in the open palm of an astronaut's hand, accompanied by the diameter of the planet and its rotation period.