Cryogenic test probes Einstein's equivalence principle, general relativity, and spacetime 'foam'
Jan 05, 2017 feature
(Phys.org)—Physicists have performed a test designed to investigate the effects of the expansion of the universe—hoping to answer questions such as "does the expansion of the universe affect laboratory experiments?", ...
Still no violation of Lorentz symmetry, despite strongest test yet
Dec 23, 2016 feature
(Phys.org)—Physicists have found the strongest evidence yet for no violation of Lorentz symmetry, one of the fundamental symmetries of relativity. Lorentz symmetry states that the outcome of an experiment does not depend ...
Much ado about nothing: Astronomers use empty space to study the universe
Aug 11, 2016
Researchers who are looking for new ways to probe the nature of gravity and dark energy in the universe have adopted a new strategy: looking at what's not there.
Black hole makes material wobble around it
Jul 12, 2016
The European Space Agency's orbiting X-ray observatory, XMM-Newton, has proved the existence of a "gravitational vortex" around a black hole. The discovery, aided by NASA's Nuclear Spectroscopic Telescope Array (NuSTAR) mission, ...
Gravitational physics poised for new era of discovery
Jun 28, 2016
The recent detection of gravitational waves from the collision of two black holes signals a new era in gravitational wave astrophysics that will allow probing of the Universe in never before known ways, writes a Montana State ...
Scientists' breakthrough in modelling universe
Jun 24, 2016
Research teams in Europe and the USA – including a cosmologist from the University of Portsmouth – have begun modelling the universe for the first time using Einstein's full general theory of relativity.
Desert telescope stakes out supermassive black hole
Jun 16, 2016
First postulated more than 230 years ago, black holes have been extensively researched, frequently depicted, even featured in sci-fi films.
Black holes might not be dead-ends after all
Jun 08, 2016
A physical body might be able to cross a wormhole in spite of the extreme tidal forces, suggests a new study by Rubiera-Garcia, of Instituto de Astrofísica e Ciências do Espaço (IA), and his team. This result, published ...
New calculations show Earth's core is much younger than thought
May 26, 2016 report
A trio of researchers in Denmark has calculated the relative ages of the surface of the Earth versus its core and has found that the core is 2.5 years younger than the crust. In a paper published in the European Journal of ...
New test by deepest galaxy map finds Einstein's theory stands true
May 11, 2016
By using Fiber Multi-Object Spectrograph on the Subaru Telescope, an international team led by Japanese researchers has made a 3D map of 3000 galaxies 13 billion light years from Earth (Figure 1). Based on this comprehensive ...