Vety: NASA, Hui Yang University of Illinois ODNursery of New Stars (tekijänoikeus vapaa) | Hiili: Rob Lavinsky, iRocks.com (CC-BY-SA-3.0) | Kupari: Native_Copper_Macro_Digon3.jpg: “Jonathan Zander (Digon3)" (CC 2.5) | Natriumi: Original uploader was Dnn87 at en.wikipedia (CC-BY-SA-3.0.) | Alumiini: Wikimedia (CC 1.0) | Rikki: Ben Mills (tekijänoikeus vapaa)