
In a First, an ‘Atomic Fountain’ Has Measured the Curvature of Spacetime
The atom interferometry technique uses the effects of time dilation to reveal subtle changes in gravity’s strength
The atom interferometry technique uses the effects of time dilation to reveal subtle changes in gravity’s strength
Runaway success and underfunding have led to growing pains for the preprint server
Recent work has shown how “naked singularities” might defy the cosmic censorship conjecture
An answer to why we’ve not been visited from the future?
A curious signal of a potentially revolutionary new particle detected last year turned out to be a fluke
A hundred years on, and the implications of Einstein's general relativity still surprise and delight
General relativity and Noether’s theorem take center stage in two live Web broadcasts this week
This video made me laugh harder than anything I’ve seen in a long time. Okay, except for some Louis CK videos. But for a non-comedian (allegedly)… this is hard to beat.
Everyone needs a little light relief sometimes, including the Nobel winning economist and writer/blogger extraordinaire Paul Krugman. A few months back he reminded the world of a short paper he’d written some years ago on the rather unexpected topic of interstellar finance...
Entanglement, like many quantum effects, violates some of our deepest intuitions about the world. It may also undermine Einstein's special theory of relativity
The black hole has a troublesome sibling, the naked singularity. Physicists have long thought--hoped--it could never exist. But could it?
A Victorian amateur undertook a lifetime pursuit of slow, meticulous observation and thought about the natural world, producing a theory 150 years ago that still drives the contemporary scientific agenda...
A new approach to the decades-old problem of quantum gravity goes back to basics and shows how the building blocks of space and time pull themselves together
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