r/todayilearned•14 yr. agotravis_talaveraTIL that the planet PSRJ1719-1438B used to be a star, and is now made up entirely of diamond.Misleadingcracked.com/article_19479_the-6-most-mind-blo...cracked.comPosted Jun 24, 2012, 2:25 AM UTC1.4K570Share