Asteroid 33 Polyhymnia is so dense it may actually contain elements never before seen on Earth, according to a new study

• Scientists think an asteroid could contain previously unknown elements. 
• Asteroid 33 Polyhymnia appears to be denser than the densest element in the Periodic Table. 
• The densest naturally occurring element, Osmium, has 76 protons per atom. The asteroid could have more than double that.

An asteroid in the solar system's asteroid belt is so dense that scientists believe it could contain elements never before seen on Earth, according to a study published in The European Physical Journal Plus in September.