Casimir cavities are mysterious spaces between microscopic metal plates in a vacuum. Areas of diminished energy between the plates cause them to push toward each other, as if trying to fill the ...

The idea of warp drive—the ability to travel faster than the speed of light—has fascinated humanity for decades. It began as a fictional concept in Star Trek and Star Wars, fueling imaginations and ...

For decades, the starship Enterprise has been shorthand for impossible speed, a sleek symbol of television fantasy rather than engineering reality. Now a growing body of warp drive research is forcing ...