LifeKepler telescope spots 'Styrofoam' planet In its first six weeks of operation, NASA's Kepler telescope discovered five planets – one with the density of polystyrene 51¶¯Âþ
SpaceWhy we shouldn't release all we know about the cosmos The Planck spacecraft promises a feast of data and profound insights into the origin of the universe – but we mustn't be gluttons, says Stuart ClarkComment