Twenty years ago, the search for planets - and life - beyond the solar system was the province of science fiction writers. Today this is one of the most dynamically developing areas of astronomical science, and the number of discovered exoplanets already numbers in the thousands. The discovery of these worlds became possible only in the last decade. 2016 was a particularly fruitful year, which was greatly facilitated by the active work of the Kepler space telescope. These new worlds are not at all like the fantasies of writers - planets larger than Jupiter, where the year lasts only one week, planets orbiting the remains of dead stars, planets with two suns in the sky and planets without any sun. Somewhere out there, far away, there are worlds the size of Earth, on one half of which it is always day and on the other - eternal night, water worlds, the entire surface of which is hidden under the thickness of the oceans, and lava worlds, spewing seas of magma. “Planet Factory” is a story about exoplanets, that is, planets orbiting stars outside our solar system.