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!