The Ultimate Time Traveler 2017 — V. Bertolaccini

An action-packed novel with two SF thrillers of explorers encountering deadly mind-bending ultimate time travelers in outer universes! Explorers detect and uncover an ultimate time traveler/black sphere voyager of transcendent origins and explorers encounter an ultimate supernatural time being of inconceivable magnitude hidden away in a mind-bending universe!

In the first, THE TRANSCENDENT TIME MACHINE, explorers detect and uncover a perfectly symmetric black sphere voyager of transcendent origins, and only find its true origins and it being an ultimate time machine/voyager when they activate it and it explores the whole of space and time as an ultimate time traveler, searching for something.
In the second, BEYOND THE UNIVERSE, a voyager explores a new form of universe with mind-bending phenomena everywhere and traces a strange energy source to something with mind-blowing powers hidden on a mysterious world since the dawn of time, and the crew get more than they bargain for when they find it is a deadly ultimate time being of supernatural origins.