Marcus Chown and Govert Schilling, renowned journalists and popularizers of science, invite the reader on a unique tour of the Universe, during which they will answer in a relaxed manner the most fundamental questions related to the world around us. Starting with the simplest ones: “why is the sky dark at night? why do stars twinkle? what are meteorites?”, they will be introduced into the most complex problems of cosmology - how the Universe was born, how supernovae appear, what quasars and black holes are, what happened before the Big Bang, are we alone in the Universe. The most interesting and pressing “macroproblems” of modern natural science are presented by the authors in the condensed form of “microblogs,” exactly like on the social network Twitter, where this fascinating and informative book takes its name.