TimeShips and GalaxyShips

Sinopsis del libro

Embark on another exhilarating journey with the intrepid Clason twins, Tarvin and Harden. Guided by their wise old grandfather Axel, they travel back in time to Earth's enigmatic Carboniferous period aboard Axel's state-of-the-art TimeShip. Their mission? To launch a fleet of six unmanned GalaxyShips into the vast…