Zeptoverse is an informal nickname for the subatomic scale of reality where distances are measured in zeptometers .  Theoretical research to determine if the subatomic scale of reality affects spacetime and everything within the Spacetime/s. Zeptoverse is apart of Spacetime.    

Smallest Size of Planck length in inches = 6.29 inches

Smallest Size of Elementary particles = 3.94 X 10 -35 inches