For more than two decades, since the first exoplanet was discovered—one lying beyond the Solar System—astronomers have been searching for a “second Earth,” where conditions for life resemble those on Earth. Anthearth is also a twin of Earth, but it shouldn’t be searched for in distant star worlds—rather, right nearby. Supposedly, it revolved on the same orbit as Earth, moving in sync with it, and therefore was always hidden behind the solar disk. This audiobook tells the story of the search for Anthearth, as well as alien beings, astrology, and many other scientific theories and facts—Astronomy.