Whether space-time exists should neither be controversial nor even conceptually challenging, given the definitions of “space-time,” “events” and “instants.” The id ...

Back in the prehistoric days of theoretical astrophysics (1985), in a mystical and exotic corner of planet Earth (Fresno, California), a man sat in the back of a car and tried to break the spacetime ...

Meanwhile, your entire existence (and the existence of any object) can be plotted on what’s called a world line, a curving ...

Scientists have claimed that time travel is real and that some intrepid individuals have already achieved it. For decades, the possibility that people could move through space and time has preoccupied ...