More than two-thirds of all stars belong to multiple-star systems. Observation of binary stars is considered one of the best methods to test stellar formation models. This book presents the most recent observations of binaries with the aim of disentangling evidence of stellar formation from later physical evolution.

With the discovery in 1995 of the first planet orbiting another star, we now realize that planets are not unique to our own Solar System. For centuries, humanity has wondered whether we are alone in the Universe. We are now finally one step closer to knowing the answer. The quest for exoplanets is an exciting one because it holds the possibility that one day we might find life elsewhere in the Universe, born in the light of another sun. Written from the perspective of one of the pioneers of this scientific adventure, this exciting account describes the development of the modern observing...