“The hydrogen in your body was made in the big bang.”
Not really. Most Hydrogen on Earth exists as a single proton, with no neutrons and two attracted electrons. It spontaneously forms Hydrogen gas, so two protons can share those two electrons and remain electrically neutral. Occasionally, a Hydrogen atom WILL include a neutron that will remain bounded by the strong force within’that atom.
Stars consist mostly of bare photons and neutrons. It might be reasonable to call a photon an atom of Hydrogen, but whereas stars are made mostly of photons, they are not elemental Hydrogen. That is, they are not formed by the strong force into distinct units. It doesn’t really make sense to call photons “Hydrogen,” unless you’re going to say “Oxygen is made out of eight Hydrogens and 10 neutrons.” Absurd. So let’s use “Hydrogen” to refer to matter in an elemental state (liquid, gas, solid) and refer to protons in a plasma. Using that definition of Hydrogen, it is produced constantly in stars, and not from the Big Bang.
Sorry but your post has several errors and misconceptions. Most hydrogen on earth indeed consists of a single proton and a single electron, not two. Two electrons would make hydrogen atoms negatively charged rather than neutral.
You are also confounding three different concepts: elemental hydrogen, atomic hydrogen, and molecular hydrogen. Most hydrogen on earth is atomic hydrogen, namely the hydrogen bound to other elements. The primary other element on earth is oxygen, and mostly atomic hydrogen on earth is found in water. Some also is bound to carbon or nitrogen, forming ammonia or hydrocarbons.
Hydrogen also binds to itself, forming hydrogen gas. This is molecular hydrogen, which is fairly uncommon on earth since it has molecular speed distributions with most molecules moving faster than escape velocity. Atomic hydrogen is one proton plus one electron, molecular hydrogen is two such atoms bound together.
This article is referring to the elemental hydrogen. This type of hydrogen is the most common component of the current universe. It was also the form of hydrogen synthesized in the Big Bang. This hydrogen consists of a single proton and a single electron, but they are not bound together. The technical term is plasma.
This article is referring primarily to nuclear origins anyway. A hydrogen nucleus IS a proton. If protons were formed in the Big Bang, so were hydrogen nuclei; they are one and the same. BTW, I’m not sure why you were referring to photons; those are light particles and have nothing to do with hydrogen.
Phil Plait, PhD Astronomer and How The Universe Works tv show host described the process of forming of heavy elements...
He suggested that several Earth volumes of just gold alone would be formed in one neutron star explosion, let alone other elements...Hard for my mind to fathom...