“iridium is one of the three heaviest (densest) elements on the Table—two cubic feet of it weighs as much as a Buick,… — Neil deGrasse Tyson Copy Share Image
“I knew that iridium-193 was one of two stable isotopes of iridium, a very rare, very dense metal, but I didn't know… — Gavin Extence Copy Share Image
“Along with osmium and platinum, iridium is one of the three heaviest (densest) elements on the Table—two cubic feet of it weighs… — Neil deGrasse Tyson Copy Share Image
