... Tonight's Sky . ... Star Atlas . ... Armchair astronomers find planet in four-star system . ... A joint effort of citizen scientists and professional astronomers has led to the first reported case of a planet orbiting twin suns that in turn is orbited by a second distant pair of stars. Aided by volunteers using the Planethunters.org website, a Yale-led international team of astronomers identified and confirmed discovery of the phenomenon т?? called a circumbinary planet in a four-star system. ...