Frank Einstein and the Space-Time Zipper (Frank Einstein series #6)

In the sixth and final book of the New York Times bestselling Frank Einstein series, Frank Einstein (kid-genius, scientist, and inventor) and his best friend, Watson, along with Klink (a self-assembled artificial-intelligence entity) and Klank (a mostly self-assembled and artificial almost intelligence entity), once again find themselves in competition with T. Edison, their classmate and archrival, this time studying the science and mysteries of the universe!