The pioneering Rosetta mission was the first to orbit a comet and deploy a lander onto its surface. This book follows the mission from its arduous beginnings to its remarkable successes, covering the major events, technology, and science behind this historic feat. The book begins with a summary of what we knew about comets before Rosetta, including brief accounts of other comet missions, such as Giotto and various NASA projects. Next, it delves into the design of Rosetta and its lander, their instruments and their flight profiles. The problems caused by the launch delay and the hunt for a suitable new cometary target are discussed, after which readers are taken along for the 10-year journey to the comet itself. The final part of the book addresses the challenges and extraordinary discoveries encountered during the comet rendezvous phase, including the touch-and-go deployment of the Philae lander during its historic touchdown. The epic journey ends with the controlled descent of the orbiter onto the comet's surface (another first!), and a look at the mission's lasting impact on planetary science and space exploration.