Some of the universe’s densest objects can twist, stretch, and resonate in ways that challenge even the most seasoned ...

Theoretical physicists have spent decades wrestling with a disorienting possibility: that the flow of time is not woven into the basic laws of physics but instead emerges from gravity’s effect on heat ...

If you’re superstitious, a black cat in your path is bad luck, even if you keep your distance. Likewise, in quantum physics, particles can feel the influence of magnetic fields that they never come ...

Neutron stars harbor some of the most extreme environments in the universe: their densities soar to several times those of ...

Gravity is a ubiquitous part of our daily lives — whether we’re being tragically brought to our knees after tripping on the rug or gleefully jumping from a swing’s apex. But despite how common the ...

Black holes may defy the famous “no-hair” theorem by leaking residual gravitational ripples that could one day be observed by gravitational-wave detectors. Such an observation would provide evidence ...

Fine balance The researchers measured the gravitational field between two gold masses of 1mm radius each that are brought close to each other. (Courtesy: Tobias Westphal, University of Vienna) ...