The Einstein Nexus: Book 1 A Novella What began as a curiosity for two teenage boys became a physics research project into the time effects of the Einstein-Rosen bridge. At first, the excitement of the project concealed the dangers, even from the experts. But in time danger led to disaster. The Einstein Nexus: Book 1 is the first novella in a series about time travel and teenage boys. See the author's website for more. Hard Science Fiction - Old School.