The Science of AstrobiologySince the publication of The New Science of Astrobiology in the year 2001the first edition of the present booktwo significant events have taken place raising the subject from the beginning of the present century to its present maturity. Firstly, in 2001 the Galileo Mission still had two years to complete its task, which turned out to be an outstanding survey of the Jovian system, especially of its intriguing satellite Europa. Secondly, the Cassini