The shape of the cosmos depends on a balance of two competing forces: the pull of gravity and the expansion driven by dark ...

That the universe is expanding has been known for almost a hundred years now, but how fast? The exact rate of that expansion ...

A dense network of sensors is looking for the fleeting footprints of neutrinos, the most mysterious in the pantheon of known particles.

This enormous chain of hundreds of galaxies—a cosmic filament—is twisting through space 400 million light-years away ...

“For the last 20 years, people believed that the cosmological constant is positive, and the universe will expand forever,” says Tye, a professor emeritus at Cornell. A positive constant acts like a ...