News tagged with gravity theory

Mapping the road to quantum gravity

The road uniting quantum field theory and general relativity – the two great theories of modern physics – has been impassable for 80 years. Could a tool from condensed matter physics finally help map ...

Apr 23, 2014
4.4 / 5 (18) 11

Alan Guth on new insights into the 'Big Bang'

Earlier this week, scientists announced that a telescope observing faint echoes of the so-called "Big Bang" had found evidence of the universe's nearly instantaneous expansion from a mere dot into a dense ...

Mar 20, 2014
3.8 / 5 (100) 83

Why Einstein will never be wrong

One of the benefits of being an astrophysicist is your weekly email from someone who claims to have "proven Einstein wrong". These either contain no mathematical equations and use phrases such as "it is obvious ...

Jan 14, 2014
4.6 / 5 (215) 690 | with audio podcast

Quantum steps towards the Big Bang

(Phys.org) —Present-day physics cannot describe what happened in the Big Bang. Quantum theory and the theory of relativity fail in this almost infinitely dense and hot primal state of the universe. Only ...

Sep 03, 2013
4.4 / 5 (75) 109 | with audio podcast

Spacetime: A smoother brew than we knew

Spacetime may be less like foamy quantum beer and more like smooth Einsteinian whiskey, according to research led by physicist Robert Nemiroff of Michigan Technological University being presented today at the 221st American ...

Jan 09, 2013
4.4 / 5 (10) 7