volcanic satellite of planet Jupiter; restrictions that seem to bind terrestrial planets, however, do not restrict ice giant planets like Neptune or Uranus. As strong tidal forces often result in the destruction of larger natural satellites in planets orbiting close to a star, it is unlikely that HD 40307 b hosts any satellites. HD 40307 b, c, and d are presumed to have migrated into their present orbits. Trivia The planet was named "Good Planet" in the Xkcd strip "Exoplanet Names" in August, 2013. See also List of exoplanets References External links HD 40307 Pictor (constellation) Super-Earths Exoplanets discovered in 2008 Exoplanets detected by radial velocity