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 ...

Dark energy,' which is said to exist in outer space, is speculated to exist from observations of stars and galaxies, but what it is and where it comes from is unknown. A new study has found that ...

The fabric of spacetime is roiling with vibrating quantum fields, known as vacuum energy. It's right there, everywhere we look. But could we ever get anything out of it? We can even calculate the ...