We talked about how in the universe the most abundant elements by far are hydrogen and helium. (We’re thinking about what Carl Sagan means by “We’re made of star stuff.”)
Consider this: we all know what the periodic table looks like. However, in the moments right after the Big Bang, the periodic table looked much different. In fact it looked very simple. Easy to memorize! (Can we all go back and have chemistry class one minute after the Big Bang please?)
PS at the very instant of the Big Bang, there were no elements.
