Earth’s gravitational force, g, has been known for centuries. But the exact value of G, the universal gravitational constant, ...

After a 10-year effort, physicists got a value for “Big G” that does not settle the debate over one of nature’s hardest ...

A precise measurement of the Hubble constant, the value that describes how fast the universe is expanding, has eluded scientists for decades. Pinning this number down would put a long-simmering debate ...

The cosmological constant is the mathematical description of the energy that drives the ever-accelerating expansion of the ...

DESI has made the largest 3D map of our universe to date. Earth is at the center of this thin slice of the full map. The magnified section visualizes the underlying structure of matter in our universe ...

A crucial number that rules the universe goes big in a strange quantum material. The fine-structure constant is about 10 times its normal value in a type of material called quantum spin ice, ...