U Haiku #atozchallenge

~ from atoms to stars ~
~ all of it in just one word ~
~ everything there is ~

The letter of the day in the A to Z Blog Challenge is U, so that’s what today’s haiku puzzle is about. Can you guess the word that starts with U that fits with the poem? Tell us in the comments. (Here’s a hint: I’m currently reading Neil deGrasse Tyson’s book, Astrophysics for People in a Hurry, which I thoroughly enjoy – and you could say today’s word describes what that book is about.)