Our body is made up of various molecules and atoms. But where did these come from? And how were they made? How much of the human body is made up of stardust?
'Since stardust atoms are the heavier elements, the percentage of star mass in our body is much more impressive. Most of the hydrogen in our body floats around in the form of water. The human body is about 60% water and hydrogen only accounts for 11% of that water mass. Even though water consists of two hydrogen atoms for every oxygen, hydrogen has much less mass. We can conclude that 93% of the mass in our body is stardust.' - excerpt from article found at PhysicsCentral.com
image taken from http://disjointedthinking.jeffhughes.ca/