... Star Atlas . ... Planets found around twin stars . Astronomers using NASA's Spitzer Space Telescope have found thriving planetary systems orbiting twin stars. ... Standard planet-hunting techniques generally don't work well with these stars, but, in 2005, a NASA-funded astronomer found evidence for a planet candidate in one such multiple-star system. ... Their presence indicates that the process of building planets has occurred around a star, or stars, possibly resulting in intact, mature planets. ...