Zero gravity

Abstract In the mid-1980's, Abhay Ashtekar discovered a reformulation of general relativity in terms of what are now called the "new variables". This led to a rap...

How do we live well? The first sentence of Grace and Gravity raises the fundamental question that constantly occupies our minds—and of all those who lived before us. Paradoxically,...

Abstract Entropy is as important a concept as energy, but less well known. The two concepts were first distinguished in the middle of the 19th century. By 1900 entro...

Shape Dynamics (SD) is a field theory that describes gravity in a different way than General Relativity (GR): it assumes a preferred notion of simultaneity, and the dynamical conte...

Abstract The Grateful Dead were one of the most fascinating rock bands and cultural phenomena of the twentieth century. Although they had few mainstream or Top 40 hi...

How do stars and planets break the bonds of gravity, and how do we know they do? Most stars form with hundreds, if not thousands, of nearby neighbors, and yet the Sun is all alone;...