"Where Did Helium Come From?" or "Jupiter & Saturn, Helium Hoarders"

All matter in the Universe is made up of three-quarters hydrogen and one-quarter helium (by weight), with relatively insignificant amounts of all the other elements (not including dark matter, whatever that is).  This crazy abundance of hydrogen and helium has been around in nearly the same ratio from minutes after the big bang over 13 billion years ago.  Wowza!

Hydrogen

Helium.  (see story of Larry Walters)

we are the byproducts of exploding stars

Today I am going to tell you where the atoms in your body came from.

Below you will find the periodic table of the elements. Stick with me, cuz this will melt your mind. Each of these elements has a different size nucleus. The nucleus is the very tiny very heavy part of the atom. Nuclei are made of these things called protons and neutrons, and the more protons that the atom's nucleus has, the higher the atomic number (atomic # increases left to right, top to bottom, just like reading)(different atoms of a given element can have different number of neutrons). Those are the basics, now on to the really good stuff.