 Plait also dedicates much of the book to debunking the idea of a Moon landing hoax and explains why astrology should not be taken seriously.A part of the book describes the Moon's tidal effects and explains the Coriolis effect, why the sky is blue, the Big Bang and other related topics.Many of the book's topics and arguments also are found on Plait's page at the "Slate" magazine blog site, but Plait explores them in greater depth in the book.