UV is bad for molecules because its high energy breaks the bonds between a molecule’s constituent atoms. That’s why UV is bad for you, too: it’s always best to avoid things that decompose the molecules of your flesh.

And extracting one molecule’s signature in spectral analysis from the rest of the signatures is hard work, sort of like picking out the sound of your toddler’s voice in a roomful of screaming children during playtime. It’s hard, but you can do it.

There’s as many atoms in a single molecule of your DNA as there are stars in the typical galaxy. We are, each of us, a little universe.

I know that the molecules in my body are traceable to phenomena in the cosmos. That makes me want to grab people on the street and say: ‘Have you HEARD THIS?