Latest General relativity Stories

ESA Missions Will Seek To Understand The Evolution Of The Universe
2013-11-29 07:25:17

April Flowers for redOrbit.com - Your Universe Online The European Space Agency (ESA) announced today that the hot and energetic Universe and the search for elusive gravitational waves will be the focus of their next two large science missions. Bridging fundamental astrophysics and cosmology themes, both topics will closely study the processes that are crucial to the large-scale evolution of the Universe and its underlying physics. L2, the second large-class mission in ESA's Cosmic...

Revealing New Information On Strength Of Black Hole Mergers
2013-11-08 07:13:10

Lee Rannals for redOrbit.com - Your Universe Online The Commonwealth Scientific and Industrial Research Organization (CSIRO) in eastern Australia has helped reveal new information about the strength of black hole mergers. Giant black holes throughout the universe sometimes pair up and merge, sending out gravitational waves that ripple across space and time. Albert Einstein predicted that these waves exist, but scientists have yet to directly detect one. Astronomers were able to...

Two Black Holes Form, Fuse Together After Star Collapses
2013-11-07 07:17:18

[ Watch the video: Supermassive Star Collapses, Forms Two Black Holes ] April Flowers for redOrbit.com - Your Universe Online Black holes are massive objects in space that have gravitational forces so strong that not even light can escape them. These objects, swirling at the centers of galaxies, also come in a variety of sizes. On the small end of the spectrum are stellar-mass black holes, which are formed during the deaths of stars. On the largest end are supermassive black holes....

Colliding Galaxies Create Supermassive Black Holes
2013-10-23 16:17:25

John P. Millis, PhD for redOrbit.com - Your Universe Online Normal black holes – a bit of a misnomer in and of itself as there is little that is “normal” about black holes of any type – are typically on the order of a few times the mass of our Sun or less. These objects are believed to result from the collapse of a massive star, an incredibly energetic event we call a Type II Supernova. But there exists at the center of virtually every galaxy we have studied a black hole of such...

Modified Gravity Theory Predicts Galaxy Dynamics
2013-08-29 10:22:45

John P. Millis, PhD for redOrbit.com - Your Universe Online For decades astronomers have studied the motions of galaxies – their rotations about their axes, as well as their interactions with each other – and been puzzled by what they have observed. The data suggests one of two possibilities: either these galaxies, and the space between them, contain significantly more mass than what is seen, or our physical understanding of gravity is flawed. The oft-discussed solution is that...

New Pulsars Discovered In Archival Data
2013-08-29 08:25:39

AlphaGalileo Foundation Einstein@Home discovers 24 new pulsars in archival data. The combined computing power of 200,000 private PCs helps astronomers take an inventory of the Milky Way. The Einstein@Home project connects home and office PCs of volunteers from around the world to a global supercomputer. Using this computer cloud, an international team lead by scientists from the Max Planck Institutes for Gravitational Physics and for Radio Astronomy analyzed archival data from the CSIRO...

2013-07-29 16:23:33

Physicists use dysprosium to put bounds on maximum speed of electrons Albert Einstein's assertion that there's an ultimate speed limit – the speed of light – has withstood countless tests over the past 100 years, but that didn't stop University of California, Berkeley, postdoc Michael Hohensee and graduate student Nathan Leefer from checking whether some particles break this law. The team's first attempt to test this fundamental tenet of the special...

I Love Q Formula Insights Into Universe
2013-07-26 11:51:21

April Flowers for redOrbit.com - Your Universe Online Without understanding the internal structure in detail, it is still possible for scientists to learn a tremendous amount about neutron stars and quark stars, according to a new study from researchers at Montana State University. "The stars could be the softest or the hardest in their kind, and it wouldn't matter," said Nico Yunes, assistant professor in MSU's Department of Physics. Yunes and his colleague, postdoctoral scholar Kent...

Monstrous Stellar Collisions Not Expected To Occur Anytime Soon
2013-07-11 14:32:31

Lee Rannals for redOrbit.com - Your Universe Online Astrophysicists from the Astronomical Observatory of the Faculty of Physics at the University of Warsaw say the next collision of monstrous stars will not occur until billions of years from now. Three years ago, scientists discovered that the Magellanic Clouds host gigantic stars with between 200 and 300 times the solar mass  of our own Sun. Before then, astronomers believed that the biggest stars in the Universe did not...

Nature's Constants Not Constant
2013-07-05 08:29:31

Lee Rannals for redOrbit.com - Your Universe Online An international team of astronomers wrote in the journal Physical Review Letters they were able to test a controversial theory about the constants of nature. The team studied a distant white dwarf star using the Hubble Space Telescope to measure the strength of the electromagnetic force, or alpha, one of the four fundamental forces that shape the universe as we know it. The researchers hoped to determine whether the laws of physics...

Latest General relativity Reference Libraries

Nature Physics
2012-05-18 15:50:42

Nature Physics is a peer-reviewed scientific journal established in 2005 and published monthly by the Nature Publishing Group. The editor-in-chief is Alison Wright, who is a full-time professional editor employed by the journal. The journal publishes original research, letters, full-length articles, review articles, news, views, physics research highlights, commentaries, book reviews, and correspondence. The main focus is pure and applied physics research, encompassing core physics...

General Relativity and Gravitation
2012-04-29 19:54:56

General Relativity and Gravitation is a peer-reviewed scientific journal published monthly since its establishment in 1970. It is published by Springer on behalf of the International Society on General Relativity and Gravitation. G.F.R. Ellis and H. Nicolai are the editors-in-chief. The journal covers modern gravitational physics, encompassing all theoretical and experimental aspects of general relativity and gravitation. The journal’s main goals include public outreach through teaching...

Foundations of Physics
2012-04-29 19:30:54

Foundations of Physics is a monthly-published journal devoted to the conceptual bases and fundamental theories of modern physics and cosmology, emphasizing the logical, methodological, and philosophical premises of modern physical theories and procedures. The journal publishes results and observations based on fundamental questions from all major fields of physics: quantum mechanics, quantum field theory, special relativity, general relativity, string theory, M-theory, cosmology,...

2004-10-19 04:45:44

String Theory -- A string theory is a physical model whose fundamental building blocks are extended objects (strings, membranes and higher-dimensional objects) rather than points. String theories are able to avoid problems, such as infinite energy density, associated with the presence of mathematical points in a physical theory. The term 'string theory' properly refers to both the 26 dimensional bosonic string theories and to the 10 dimensional superstring theories discovered by...

2004-10-19 04:45:42

Spacetime -- In special relativity and general relativity, time and three-dimensional space are treated together as a single four-dimensional manifold called spacetime (alternatively, space-time; see below). A point in spacetime may be referred to as an event. Each event has four coordinates (t, x, y, z). Just as the x, y, z coordinates of a point depend on the axes one is using, so distances and time intervals, invariant in Newtonian physics, may depend on the reference frame of an...

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