Emergent gravity is a bold idea. It claims that the force of gravity is a mere illusion, more akin to friction or heat—a property that emerges from some deeper physical interaction. This emergent ...

Claudia de Rham showed how theories of “massive gravity” could potentially get rid of the need for dark energy. Ever since Albert Einstein’s general theory of relativity recast gravity as curves in ...

Gravity is a pretty awesome fundamental force. If it wasn't for the Earth's comfortable 1 g, which causes objects to fall towards the Earth at a speed of 9.8 m/s², we'd all float off into space. And ...