Planet the Drake equation, which estimates the number of intelligent, communicating civilizations that exist in the Milky Way. There are exoplanets that are much closer to their parent star than any planet in the Solar System is to the Sun, and there are also exoplanets that are much farther from their star. Mercury, the closest planet to the Sun at 0.4 AU, takes 88 days for an orbit, but the shortest known orbits for exoplanets take only a few hours, e.g. Kepler-70b. The Kepler-11 system has five of its planets in shorter orbits than Mercury's, all of them much more massive
Don't Bite the Sun Don't Bite the Sun Don't Bite the Sun is a 1976 science fiction novel by Tanith Lee set in a utopian world which the main character comes to reject. The main character and her friends are wild, crazy "Jang" teenagers whose lifestyle is full of reckless behaviour, promiscuous sex, repeated suicide (on dying they are reborn), and a constant search for thrills. Over the course of the story, the nameless narrator fails to relate to her seven Jang friends but finds herself, feels emotion, and learns love. On a desert planet in the distant future, humanity inhabits three domed utopian