It is the first Friday of the New Year, and given a lot of predictions in the general press that have been not just gloomy but downright apocalyptic, it seems like the perfect time to start off this ...

The cosmological constant has plagued physicists for more than a century. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. There is a fundamental ...

The General Theory of Relativity is supported by an impressive body of astronomical observation. Relativity explains the orbital eccentricities of Mercury, the “stretching” of light from heavy stars, ...