Tom Byers
The attentive mother tells her little boy,
“There are two things
you need to know about photons, Bobby,
how they can hurt you
and how you can hurt them.
“Never stare directly at the sun,
because you will go blind.
“And never stare at the cosmic
microwave background through an Einstein ring, because you might pop an old wave
like a balloon
and mess up the Big Bang.”