The book "When the Sun Went Out" by Leslie Francis Stone is an exciting science fiction novel that tells about the future of humanity when the sun suddenly begins to fade. The main character, a young scientist, has an important task - to find a way to save the Earth from destruction and to find a new source of energy to save life on the planet. The author not only somewhat raises the fundamental questions of physics and space, but also unfolds before the reader a fascinating story about faith in science and the human mind in the most difficult situations. "When the Sun Went Out" is a book that will leave you thinking for a moment about the future of our planet and the possibilities of the human mind to save the world.