This book is about the history and the current state of the art in cosmology—
the science about the Universe as a whole. It mostly aims to explain the
main ideas of modern cosmology: the expanding Universe, its creation in
a Big Bang, its evolution, characteristics and so on. We tried to answer
some frequently asked questions about cosmology.We also discuss the two
mysteries of the modern science, directly related to cosmology — dark
matter and dark energy.