Two physicists from the University of Queensland in Australia recently laid out a model for studying hypothetical time travel. Their work expands on what’s called the Alcubierre spacetime, first ...
Humans are one (small) step closer to traveling at faster-than-light speeds.
If an Alcubierre Drive achieves a constant velocity, it's not detectable. It generates no gravitational waves and has no ADM mass. ADM stands for Arnowitt–Deser–Misner, named for three physicists. But ...