Out of Time — Cliff Ball

This book is about a cloned scientist who invents time travel and uses a spaceship to go back in time. The ship ends up stolen, and he and a team of other time travelers have to figure out where in time the hijackers went. After the retrieval of the ship, the time travelers visit the Titanic, Anne Frank, President Kennedy, and various NASA spacecraft. When they come back to their present, something has changed …