A strange form of matter called a time crystal has fascinated physicists for about a decade. These systems move in repeating ...

A team at New York University has discovered a new form of time crystal that hovers using sound waves. Unlike ordinary matter, these crystals seem to behave in ways that don’t align with Newton’s ...

Helium is inert, which makes it useful in a lot of different industries. But helium’s colorless and odorless non-reactivity ...