The exploration of the first billion years of the history of the
Universe represents one of the great challenges of contemporary
astrophysics. This book contains the worked out lectures given at the
36th Saas-Fee Advanced Course "First Light in the Universe" by three
eminent scientists in the field: Abraham Loeb, Andrea Ferrara, and
Richard Ellis. The formation of the first stars and black holes, the
initial mass function, feedback effects, early dust formation, the
cosmic star formation history, distant galaxies, cosmic reionisation and
the cosmic infrared background are the main topics treated. This book
contains an accessible and up-to-date review of the field and will be
useful to graduate students of astronomy, cosmologists, physicists and
researchers. The topic of this book is particularly timely, as many new
important observational facilities are being built, for which "first
light in the universe" is one of the main science drivers.