Lecture on promising places for life beyond Earth and habitable stations: caves on planets, moons, asteroids, comets. Reasons: protection from cosmic radiation, minimal temperature fluctuations, high humidity. Caves discovered on Mars and others, unexplored due to lack of caving robots - development underway. Need unconventional ideas for space underground study. Speaker: Vladimir Surdin, PhD in physical and mathematical sciences, senior researcher at P.K. Sternberg State Astronomical Institute, associate professor at MSU Physics Faculty. Winner of Belyaev Prize and Enlightener Prize.