The cover design is by
Dany is an experienced and creative illustrator. Check out his work at galgani.com!
The cover elements are alder leaves, a mayfly, and a galaxy image taken by the Hubble Space Telescope - based on these words from Chapter 2:
Our lives, compared to the stars, are tinier than a mayflys life compared to the alder trees. Yet we can describe the birth and death of stars!