Imagine a clock that doesn't have electricity, but its hands and gears spin on their own for all eternity. In a new study, ...

Physicists have created a new type of time crystal that may help confirm some fundamental theories about quantum interactions. A standard time crystal is a new phase of matter that features perpetual ...

The original version of this story appeared in Quanta Magazine. At the turn of the 20th century, the renowned mathematician David Hilbert had a grand ambition to bring a more rigorous, mathematical ...