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Latest Gravitation Stories

Astronomers Discover The Earliest Echoes Of The Big Bang
2014-03-17 13:23:58

Lee Rannals for redOrbit.com - Your Universe Online Astronomers publishing a paper in the journal Nature say they have found the first direct evidence that gravitational waves rippled through the early Universe during the inflation period. Scientists using the NASA-developed detector technology on the BICEP2 telescope at the South Pole found the strongest confirmation yet of cosmic inflation theories, which say the universe expanded by 100 trillion trillion times in less than the blink...

2014-03-06 08:20:37

DENVER, March 6, 2014 /PRNewswire-USNewswire/ -- Imagine a world where gravity modification engines on semiconductor chips, float and propel rockets, aircrafts, and helicopters by the year 2020. This revenue opportunity is estimated to be $30 billion. Imagine, interstellar journeys that take minutes if not seconds, a world with commercial traffic between the stars, across our Milky Way, and within our lifetimes by 2040. Xodus One Foundation [501(c) application filed] is the foremost...

2014-02-18 08:20:54

ARLINGTON, Va., Feb. 18, 2014 /PRNewswire/ -- Kate Upton and Sports Illustrated (SI) have taken swimsuit modeling where it's never gone before. Flying with Zero Gravity Corporation (ZERO-G), Upton flipped, floated and modeled in true weightlessness - as if in outer space - for SI's 50(th) anniversary Swimsuit issue. Visit Swimsuit.Si.com for behind-the-scenes video and photos of Kate Upton's zero gravity shoot. Tweet It:.@KateUpton in space? Close - watch as she defies gravity...

Students from Kings College London, UK, wearing the 'Skinsuit' as subjects for a functional evaluation study
2014-01-11 03:58:46

Brett Smith for redOrbit.com - Your Universe Online Far from being a fashion statement, the European Space Agency (ESA) has unveiled the Skinsuit, which is scientifically designed to mitigate some of the negative effects weightlessness has on the body. In the weightlessness of space, bone and muscle wither as microgravity puts very little strain on these tissues. Some astronauts have been known to grow nearly 3 inches as their spines lengthen in this environment. Many astronauts also...

Gravity Clues From Stellar Triple System
2014-01-06 03:39:45

redOrbit Staff & Wire Reports - Your Universe Online The discovery of a superdense neutron star in a stellar triple system has made it possible for researchers to collect the best measurements to date of the complex gravitational interactions present in these types of systems, according to a new study in Nature. Using the National Science Foundation's Green Bank Telescope (GBT), the study authors were able to locate the pulsar along with two white dwarf stars in a compact area...

Rare Binary White Dwarf Systems
2013-12-20 08:30:50

John P. Millis, PhD for redOrbit.com - Your Universe Online Nearly a half-century ago, astronomers discovered a strange star in the Canes Venatici constellation. It was later determined that the unusual properties of the object arose because it was not an isolated star at all, but rather a very tight binary system. With an orbital period of 18 minutes – for comparison the orbit of Mercury around the Sun takes about 88 Earth days – the individual members of the system are incredibly...

2013-12-18 15:17:25

A new study on electric discharge behavior under intense gravitational forces shows that its dynamic changes as gravity increases Arc discharges are common in everyday conditions like welding or in lightning storms. But in altered gravity, not as much is known about the behavior of electric discharges. For the first time, Jiří Šperka from Masaryk University, Czech Republic, and his Dutch colleagues studied the behavior of a special type of arc discharge, so-called glide arc, in varying...

Astronomers Puzzled By Discovery Of Giant Planet Orbiting Distant Star
2013-12-05 12:56:55

[ Watch the Video: What Planet Has Astronomers Puzzled? ] Lee Rannals for redOrbit.com - Your Universe Online Astronomers have found the most distant orbiting planet to date, and the puzzling discovery is effectively throwing a wrench in planet formation theories. Scientists reported in The Astrophysical Journal Letters that exoplanet HD 106906 b is orbiting its star at 650 times the average Earth-Sun distance. "This system is especially fascinating because no model of either...

NASA And Others Build On Past Microgravity Fire Research
2013-11-27 08:36:24

NASA Researchers build on the work of those who have gone before. New experiments intersect with published research; current investigations expand the scope of earlier work; new tests verify and challenge old results. And so it goes with all research, including microgravity flame studies. NASA engineers, academic researchers and scientists of all stripes have built on past experiments and findings to understand the fundamentals of combustion, fire sensing and fire suppression both on...

2013-11-27 08:21:05

WASHINGTON, Nov. 27, 2013 /PRNewswire-USNewswire/ -- NASA is offering undergraduate students from minority serving institutions the opportunity to test an experiment in microgravity as part of the agency's Reduced Gravity Education Flight Program, in association with the Minority University Research and Education Program. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) The deadline for proposals is Dec. 4. The actual flight will take place in June 2014. All applicants...


Latest Gravitation Reference Libraries

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...

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2004-10-19 04:45:44

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...

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2004-10-19 04:45:41

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...

6_60c162484c1943aae138f09b8da030e95
2004-10-19 04:45:41

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...

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2004-10-19 04:45:41

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...

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