Scientists observe a visible time crystal for the first time, revealing a phase of matter that repeats patterns through time.

One of the great mysteries of modern science is dark matter. We know dark matter exists thanks to its effects on other objects in the cosmos, but we have never been able to directly see it. And it’s ...

Hydrogen is set to become a key energy source, fueling everything from aircraft and heavy-duty vehicles to cars and homes. However, hydrogen comes with problems in weakening metals, causing unexpected ...

Scientists have spent decades trying to understand how gravity operates at its most basic scale. However, no theory has come close to fully explaining it. Now, though, a new theory could finally give ...

There is a glaring gap in our knowledge of the physical world: none of our well-established theories describe gravity’s quantum nature. Yet physicists expect that this quantum nature is essential for ...