The forerunner of this book was an introductory course in astronomy for the Humanities, given by Neil Degrasse Tyson, Michael Strauss, and Richard Gott at Princeton. More than 100 problems are considered here, and this number, according to the authors, should just be enough to learn to think like an astrophysicist.In a playful manner, the authors demonstrate that we can have a deeper understanding of the properties of the infinitely large and the infinitely small, a more meaningful dialogue with the cosmos, and for this, enough University knowledge of algebra. The authors suggest solving the physical problems of micro-organisms on Europa, colliding black holes, expanding space, and even the two-dimensional TARDIS time machine. Do not worry about whether you will be smart enough, because the authors have already taken care of it: they provided each problem with a detailed explanation and a solution for it. A time-tested space science course for beginners!Scientific editor of the publication - - - Alexander Mikhailovich Krasilshchikov, Ph. D., member of the Ioffe Institute of physics and technology of the Russian Academy of Sciences.