The crew of the Challenger were in an agonising situation: they had been born on their starship and had never set foot on a planet and yet the Earth was their spiritual home. For years they had studied holograms and videos of Earth in the challengers library and had dreamed of a time that their ship could return so that they could walk under Earth\'s blue skies, feel summer breezes on their faces and cool green grass on their feet.And now Earth had vanished. from the solar system. From clues discovered from abandoned colonies on other planets they had learned that the people of Earth had take their planet in search of a new sun- a sun that was not liable to become a Nova. The crew decided to go in search of their lost planet even though though the trail was half a million years cold.Very good condition, some wear on the edges of the spine