One way of creating a time crystal is to knock some of the carbon atoms out of the crystal lattice of diamond, creating what ...

But if you want the ultimate in accuracy, you’ll want a quantum atomic interferometer. What that is, and how it will be possible to make one small enough to be useful, is half of the story.

Under this model, the black hole transitions into a white hole, with the hole's singularity and horizons defined as regions of extreme quantum fluctuations where time doesn't end or fade into forever, ...