Although collisions form the main thread running through the book, it's actually wider in scope than that, covering both the history of the Solar System, and the history of our understanding of it. That includes our understanding of our own planet, and one of the eye-opening facts is how long it took the academic world to recognise the role played by collisions in geological history. Basically, the topic got lost for decades in the gap between the geology and astronomy departments. [...] Marchi's first-hand accounts of work he was personally involved in - such as NASAs Dawn mission to the asteroid belt - make especially fascinating reading. For anyone wanting an up-to-date account of the Solar System and the processes that shape it, this is the perfect place to start. * Brian Clegg, Popular Science * Colliding Worlds is a fascinating and fresh look at the history of our solar system through the lens of the cataclysmic events that have profoundly shaped it. Marchi's engaging and clearly written book helps us understand the nature and significance of impacts for Earth's geologic history and the emergence of life, as well as their implications for our sibling terrestrial planets and exoplanetary systems. * Carol A. Raymond, Jet Propulsion Laboratory, California Institute of Technology * A fascinating story of how our Solar System was formed, and how we have arrived at the current understanding of it, from the unique perspective of cosmic collisions. Information from a few hundred years of planetary and astronomical research to the latest space exploration is marvellously weaved together. The very success of being able to connect diverse subjects in such a coherent and engaging manner attests to the fundamental importance of cosmic collisions, or creative destruction as the author puts it, in our search for the grand theory of planetary formation in the coming years. * Jun Korenaga, Yale University *