Jan. 23 (UPI) --The Hubble constant is the rate at which the universe is expanding. Through the decades, astronomers have developed more reliable ways to estimate the value of the Hubble constant, but ...

There are quite a few fundamental constants. These are things like the speed of light (c) the charge on an electron (e), and the Planck constant (h). These constants are determined with some type of ...

Analyzing ripples in the fabric of space and time created by pairs of dead stars may soon solve a cosmic mystery surrounding how quickly the universe is expanding — if scientists are lucky. That's the ...