Researchers Propose New Gravitational Wave Detector
John P. Millis, Ph.D. for redOrbit.com – Your Universe Online Exchange of electromagnetic energy is fairly well understood. The force carrier, the photon, is readily detectable and manipulated, making the physics of electromagnetic radiation...
Latest Gravitation Stories
KILAUEA, Hawaii, May 7, 2013 /PRNewswire/ -- A groundbreaking paper published last week sheds new light on the theory of gravity and the potential to significantly impact global issues facing the human race, including alternative energy sources. Nassim Haramein, Director of Research at the Hawaii Institute for Unified Physics (HIUP), has authored a paper titled "Quantum Gravity and the Holographic Mass," which has been validated and published in the peer review journal, Physical...
Lee Rannals for redOrbit.com – Your Universe Online Astronomers have found a way to test Einstein's theory of gravity in ways that were not possible before now, thanks to new observations of a very unique system. A team used telescopes around the world to study the most massive neutron star confirmed so far, orbited by a white dwarf. The scientists wrote in the journal Science that so far the new observations match up with Einstein's predictions for general relativity. Einstein's...
Alan McStravick for redOrbit.com - Your Universe Online In 2011, the Nobel Prize for Physics was awarded to a trio of researchers. Adam Riess, Saul Perlmutter and Brian Schmidt were able to determine that the speed and scope of the expansion of the universe is not so uniform as once believed. This simple discovery threw the whole prospect of dating and measuring time in galaxies far from our own. However, this week saw a multi-national collaboration come together to detail just how we...
University of Montreal University of Montreal researchers found that changes in gravity affect the reproductive process in plants. Gravity modulates traffic on the intracellular "highways" that ensure the growth and functionality of the male reproductive organ in plants, the pollen tube. "Just like during human reproduction, the sperm cells in plants are delivered to the egg by a cylindrical tool. Unlike the delivery tool in animals, the device used during plant sex consists of a single...
Pioneering scientists redefine what influences movement in solar system and invite scientists, theorists and solar system experts to comment on the "More than Gravity" thesis LANCASTER, N.Y., Feb. 26, 2013 /PRNewswire/ -- A new theory on the forces that control planetary orbit refutes the 400-year old assumptions currently held by the scientific community. Scientific and engineering experts Gerhard and Kevin Neumaier have established a relationship between solar winds and a quantized...
April Flowers for redOrbit.com - Your Universe Online A research collaboration between Case Western University and Weizmann Institute of Science has used modified laws of gravity to closely predict a key property measured in faint dwarf galaxies that are satellites of the nearby giant spiral galaxy Andromeda. The study centers around the property of velocity dispersion, which is the average velocity of objects within a galaxy relative to each other. Velocity dispersion is by used by...
John P. Millis, Ph.D. for redOrbit.com – Your Universe Online Click here to stream "Facts About Black Holes – Separating Myth From Reality" (Or right-click on the above link to download the file to your computer) When most people think of a black hole, they tend to envision it as sort of cosmic vacuum cleaner, slowly sucking in and devouring everything in its vicinity. But are black holes really like this? And what would happen if you fell into a black hole? What about a...
John P. Millis, Ph.D. for redOrbit.com – Your Universe Online Click here to stream "How Stars Die And Black Holes Form": Your Universe Today Podcasts (Or right-click on the above link to download the file to your computer) Black holes are among the most exotic, mysterious and perplexing objects in the Universe. They are swallowers of light, destroyers of stars and the engines that drive our galaxies. Some believe they could even hold the key to interstellar travel and may perhaps...
John P. Millis, Ph.D. for redOrbit.com – Your Universe Online Two of the greatest scientific achievements of the last century were the establishment of the theories of Quantum Mechanics and General Relativity, both of which have withstood continual experimental scrutiny. However, a problem remains. The two theories seem to be at odds with each other. Researchers, for decades, have sought a theory that would combine the two realms – the large-scale gravity fields, and the tiny...
NASA's Johnson Space Center in Houston is accepting applications from teams of kindergarten, elementary and secondary school teachers to conduct scientific experiments aboard the agency's reduced gravity aircraft next year. The MicroGravity eXperience (Micro GX) flight program will take place July 12-20, 2013, at Johnson. Educators selected to fly also will participate in an online professional development course centered on microgravity science in the months before and after their...
Latest Gravitation Reference Libraries
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...
Kepler's Laws of Planetary Motion -- The astronomer Johannes Kepler's main contribution to astronomy was his three laws of planetary motion. Kepler found these laws empirically by studying extensive observations recorded by Tycho Brahe. He found the first two laws in 1609 and the third one in 1618. Isaac Newton was later able to derive the laws from his laws of motion and gravity, thereby producing strong evidence in favor of Newton's inverse-square gravitational law. Kepler's First...
Gravitational Lens -- A gravitational lens is formed when the light from a very distant, bright object (such as a quasar) is "bent" around a massive object (such as a massive galaxy) between the bright object and the viewer. The process is known as gravitational lensing, and was one of the predictions made by Einstein's general relativity. Description In a gravitational lens, the gravity from the massive object bends light as a lens might. As a result, the path of the light from a...
General Relativity -- General Relativity is the common name for the theory of gravitation published by Albert Einstein in 1915. According to general relativity the force of gravity is a manifestation of the local geometry of spacetime. Although the modern theory is due to Einstein, its origins go back to the axioms of Euclidean geometry and the many attempts over the centuries to prove Euclid's fifth postulate, that parallel lines remain always equidistant, culminating with the...
Escape Velocity -- An escape velocity is the minimum speed at which an object without propulsion can move away from a source of a gravitational field indefinitely if there is no friction. This definition may need modification for the practical problem of two or more sources in some cases. In any case, the object is assumed to be a point with a mass that is negligible compared with that of the source of the field, usually an excellent approximation. It is commonly described as the speed...
