updated Mon. May 7, 2018

Cosmos
April 25, 2018
Third, inference to the best explanation is not just a passionless move in some deduction game. Einstein was not led to his theories of special and general relativity through attention to data alone, as if following some experimental breadcrumbs. His theories were the offspring of his imagination as much asÃÂ ...
New Scientist
April 25, 2018
He is perhaps best known for his subsequent work unifying different flavours of string theory, an attempt to move beyond general relativity to a “theory of everything” that unifies all of nature's forces. In a less formal award, a poll of physicists attending a cosmology conference the same year saw him dubbedÃÂ ...
Symmetry magazine
April 25, 2018
This feat—a revolution in physics that would supplant Isaac Newton's law of universal gravitation and result in Einstein's theory of general relativity—would require some new ideas. Fortunately, Einstein's friend and collaborator Marcel Grossmann swooped in like a waiter bearing an exotic, appetizingÃÂ ...
Oswego Daily News
April 24, 2018
OSWEGO — The SUNY Oswego planetarium will examine “General Relativity, Generally” at 7 p.m. every Sunday during May. Using SUNY Oswego's planetarium, host Richard Frieman of the atmospheric and geological sciences department will explore the fundamentals of general relativity as proposed byÃÂ ...
NBCNews.com
April 13, 2018
When the theory of relativity appeared in the early 1900s, it upended centuries of science and gave physicists a new understanding of space and time. Isaac Newton saw space and time as fixed, but in the new picture provided by special relativity and general relativity they were fluid and malleable.
Science News
April 11, 2018
But according to general relativity, gravity is the result of massive objects like the sun and planets warping spacetime. The warping caused by the sun, Einstein realized, would affect the rotation of each planet's orbit slightly and would be most noticeable for Mercury, since it is closest to the sun. But a smallerÃÂ ...
Princeton University
April 10, 2018
His dissertation, “Stability and instability results in general relativity,” provides the first rigorous proof of the instability of Antide Sitter (AdS) spacetime in the presence of matter. “While the instability of AdS spacetime in the absence of matter remains a challenging open problem, the ideas and techniquesÃÂ ...
McGill Tribune
April 4, 2018
Alongside quantum mechanics, a second modern, or post1900, physical principle that Einstein called “general relativity” emerged. This theory provided a unified description of gravity, describing natural phenomena on a much larger scale than quantum mechanics at the level of orbiting planets andÃÂ ...
SkyandTelescope.com
March 19, 2018
“The existence of quantum [fluctuations] due to gravitational fields has been known since the late 1970s,” explains CarballoRubio. But physicists didn't know how to take this effect into account in collapsing stars. CarballoRubio derived equations that combine general relativity and quantum mechanics in aÃÂ ...
Newsweek
March 19, 2018
Since the formulation of Einstein's theory of general relativity in 1915, every theoretical physicist has been dreaming of reconciling our understanding of the infinitely small world of atoms and particles with that of the infinitely large scale of the cosmos. While the latter is effectively described by Einstein'sÃÂ ...
ScienceAlert
March 16, 2018
According to a straightforward interpretation of general relativity, the Big Bang wasn't the start of 'everything'. Taking Einstein's famous equations at face value and making as few assumptions as possible, a team of researchers has rewound the clock on our Universe to find it wouldn't lead to a stoppingÃÂ ...
Astronomy Magazine
March 15, 2018
Now, though, we know that this precession is actually due to the effects of general relativity, as the Sun's mass deforms spacetime around it. Mercury rotates on its axis with nearly no tilt whatsoever, meaning the planet experiences no seasons and there are places at the poles where sunlight never touches,ÃÂ ...
Georgia Tech News Center
March 15, 2018
In addition to general relativity, Hawking was a leader in the search for extraterrestrial life. He served as a board member of the Breakthrough Starshot Initiative, which aims to visit our nearest neighboring star, Alpha Centauri. I was a member of the advisory committee, and now my students characterize theÃÂ ...
Popular Mechanics
March 15, 2018
"He dove into the chasm between quantum theory and general relativity and came back with a pearl," says Adam Riess, Nobel Laureate in Physics for his work providing evidence of accelerated universal expansion and a Bloomberg Distinguished Professor of astronomy and physics at Johns HopkinsÃÂ ...
The Verge
March 15, 2018
Stephen Hawking's biggest accomplishment shone through both his physics work and his outreach to the public, bridging gaps between things that once seemed incompatible. Whether he was demonstrating that black holes did indeed radiate material or that popular culture could embrace the mysteries ofÃÂ ...
Asheboro Courier Tribune
March 14, 2018
Hawking made his reputation with his study of “singularities,” unimaginable objects predicted by Einstein's theory of general relativity. When a star with several times the mass of our sun exhausts its nuclear fuel, it collapses, its matter crushing together with such force that it forms a singularity, an infinitelyÃÂ ...
Vox
March 14, 2018
And that means that black holes eventually evaporate and even explode. The finding was so important because, first off, it provided a clue that one day, quantum mechanics and general relativity could be united into one grand theory. In other words, if quantum mechanics and relativity could come togetherÃÂ ...
New York Times
March 14, 2018
In 1965, when Dr. Hawking was 23, the British mathematician Roger Penrose proved that if Einstein's theory of gravity, general relativity, was correct there is a point of infinite density — a singularity — at the center of a black hole. In 1970, building on work in Dr. Hawking's doctoral dissertation, he and Dr.
Quanta Magazine
March 14, 2018
General relativity was meant to supplant Newtonian gravity. This meant it had to explain all the same physical phenomena Newton's equations could, plus other phenomena that Newton's equations couldn't. Yet in mid1913, Einstein convinced himself, incorrectly, that his new theory couldn't account forÃÂ ...
ScienceAlert
March 1, 2018
According to general relativity, light affected by a strong gravitational field will get stretched out, or redshifted. The orbit will also shift, ever so slightly changing trajectory. As S02 moves in for its closest approach at 17 lighthours away from the centre of the galaxy (about four times the distance between theÃÂ ...
Astronomy Magazine
February 28, 2018
Astronomers are so eager for this close approach because it will serve as yet another stringent test of Einstein's Theory of General Relativity. But, until last week, there was a slight sense of unease in the air as astronomers suspected S02 was a binary star system like many other Sstars. This would haveÃÂ ...
Symmetry magazine
February 27, 2018
“General relativity has been the staple of gravitational understanding for 100 years,” says Katie Chamberlain, a physics student at Montana State University. “We have to rule out the potential for other existing theories to come in and replace [it].” Many alternative theories of gravity are out there, designed toÃÂ ...
Quanta Magazine
December 31, 1999
Over the last year, however, mathematicians have brought the mathematics of general relativity into sharper focus. Two groups have come up with proofs related to an important problem in general relativity called the black hole stability conjecture. Their work proves that Einstein's equations match a physicalÃÂ ...
physicsworld.com
February 3, 2018
... an alternative explanation of the anomaly. In three preprints uploaded to the arXiv server, the duo calculate that effects due the curvature of spacetime could result in an increase in the measured value of the magnetic moment. This effect of general relativity is related to the gravitational field of the Earth.
ScienceAlert
January 22, 2018
To date, Einstein's theory of general relativity may have stood up to test after test, but that doesn't mean it's infallible  or that scientists should stop trying to test it. Every time the theory holds, we learn something valuable about the Universe.
ScienceAlert
January 19, 2018
An idea for an experiment that could unite the stubborn fields of quantum mechanics and general relativity has been given new life by two groups of physicists from the UK. The fact that quantum theory doesn't play well with gravity is a massive stumbling block in physics, one that has long eluded some ofÃÂ ...
Gizmodo
January 19, 2018
He created his theory of general relativity to account for this: gravity is a manifestation of the warping of spacetime caused by massive bodies like the sun. Mercury's orbit shows this warping most clearly—and, indeed, before Einstein's work, scientists were long puzzled by its strangeness, even attributing itÃÂ ...
Science Trends
January 19, 2018
General Relativity is, currently, the best theory to explain gravitational phenomena. Published by Albert Einstein in 1915, the theory found agreement with known astronomical observations, and it stated novel predictions that have been confirmed with great accuracy. Such predictions are actuallyÃÂ ...
Physics
January 17, 2018
However, new research by Vitor Cardoso from the University of Lisbon, Portugal, and colleagues [1] suggests that this predictability of the laws of physics can fail in general relativity. The researchers find that it might be possible for a star that undergoes gravitational collapse to form a black hole containing aÃÂ ...
Futurism
January 16, 2018
Patsyk stated that “Einstein's equations of general relativity determine, among other issues, the evolution of electromagnetic waves in curved space. It turns out that the evolution of electromagnetic waves in curved space according to Einstein's equations is equivalent to the propagation of electromagneticÃÂ ...
Big Think (blog)
January 16, 2018
We all know how successful Einstein was as a scientist, with his ideas reshaping our understanding of the universe and becoming a part of our everyday thinking and culture. But for all his accomplishments, like transforming our conception of space and time with his theory of general relativity, the NobelÃÂ ...
Science Trends
January 16, 2018
Despite huge research efforts, the relation between the two big theories of the 20th century – General Relativity and Quantum Mechanics is still not clearly understood. The idea that all interactions are fundamentally quantum, albeit extremely successful with all nongravitational interactions, seems to fail inÃÂ ...
Tulsa World
January 9, 2018
Editor's note: Both Albert Einstein's Theory of General Relativity and Isaac Newton's Law of Universal Gravitation explain gravity through science. In the language of science, the word "law" describes an analytic statement. It gives us a formula that tells us what things will do. While laws rarely change,ÃÂ ...
Northwestern University NewsCenter
January 9, 2018
... show the jets' streams gradually change direction in the sky, or precess, as a result of spacetime being dragged into the rotation of the black hole. This behavior aligns with Albert Einstein's predictions about extreme gravity near rotating black holes, published in his famous theory of general relativity.
Outer Places
January 9, 2018
"Previous attempts considered statements of general relativity and quantum mechanics to be applicable to the same world. My approach separates the two—quantum mechanics allows for a quantum state to be a 'superposition' of many classical worlds; statements of quantum mechanics apply to theÃÂ ...
Futurism
January 6, 2018
A pair of researchers have uncovered a potential bridge between general relativity and quantum mechanics — the two preeminent physics theories — and it could force physicists to rethink the very nature of space and time. Albert Einstein's theory of general relativity describes gravity as a geometricÃÂ ...
Science Daily
December 14, 2017
Shortly after Albert Einstein wrote his equations for General Relativity, which describe gravity, he included an "antigravity" factor called the "cosmological constant" to balance gravitational attraction and produce a static universe. But Einstein later called the cosmological constant his greatest mistake.
UC Davis
December 13, 2017
Shortly after Albert Einstein wrote his equations for General Relativity, which describe gravity, he included an “antigravity” factor called the “cosmological constant” to balance gravitational attraction and produce a static universe. But Einstein later called the cosmological constant his greatest mistake.
Big Think (blog)
December 31, 1999
Although the laws of general relativity and quantum mechanics work exceptionally well in their own spheres, some of the rules that govern one area don't work in the other, and viceversa. For instance, Relativity explains the gravitational force as it relates to bodies on Earth or in space. But it falls apart onÃÂ ...
physicsworld.com
December 31, 1999
His “strong cosmic censorship” conjecture states that there is some mechanism within general relativity – a censor – that prohibits the appearance of Cauchy horizons. In the case of a charged black hole, he calculated that even the slightest perturbation in the initial conditions of the imploding star destroysÃÂ ...
physicsworld.com
December 31, 1999
Two separate groups in the UK; Chiara Marletto and Vlatko Vedral at the University of Oxford, and a team led by Sougato Bose from University College London, have proposed experiments that may for the first time reveal a link between the theories of quantum mechanics and general relativity. Within theirÃÂ ...
Science News
December 31, 1999
According to general relativity, an object's composition has no impact on how gravity pulls on it: Earth's gravity accelerates a sphere of iron at the same rate as a sphere of lead. That's what's known as the weak equivalence principle. A slew of experiments have confirmed that principle — beginning withÃÂ ...
Cosmos
December 31, 1999
Einstein's theory of general relativity therefore describes gravity as not just a force, but geometry – it is a consequence of how matter warps spacetime. Unlike Newton's theory, general relativity correctly describes the changing orbit of Mercury by taking into account the disturbances of spacetime caused byÃÂ ...
Futurism
December 31, 1999
Now, a team of researchers at the California Institute of Technology led by Sean Carroll has suggested that this interpretation can explain away inconsistencies pertaining to black holes. They say that general relativity is upheld within each single possible world, while information is preserved across theÃÂ ...
Science Magazine
December 31, 1999
Einstein's theory of gravity, known as general relativity, marks a fundamental break in our conception of the universe. Whereas Newton envisaged gravity as a force of attr action between two objects in empty space, relativity instead tells us that gravity is a distortion of space (and time) itself. The theory wasÃÂ ...
Aviation Week
December 12, 2017
LYON, France—Partial results of the experiment conducted aboard Europe's Microscope minisatellite have confirmed with unprecedented precision a key principle in the theory of general relativity postulated by Albert Einstein, French space agency CNES announced earlier this .
Techworm
December 12, 2017
Einstein's theory of relativity usually covers two interrelated theories: special relativity and general relativity. This theory was proposed in 1905 and depicts the relationship between space and time. Special relativity brought in ideas like the speed of light being a universal speed limit and the passage of timeÃÂ ...
Edgy Labs (blog)
December 10, 2017
While the theory of general relativity has succeeded in describing the force of gravity over cosmological distances, it has not been tested in the microscopic realm. This is the subject of quantum gravity theory, which suggests the existence of gravitons, massless particles that remain theoretical at the momentÃÂ ...
Discover Magazine (blog)
December 9, 2017
That question requires a quick dive into Albert Einstein's general relativity, or theory of gravity — the same theory that predicted gravitational waves a century ago. Einstein overthrew Isaac Newton's idea of “absolute time.” Newton thought time marched onward everywhere at an identical pace — regardlessÃÂ ...
Science News
December 4, 2017
Scientists still don't know how to combine general relativity with quantum mechanics, the physics of the very small. “The two theories seems to be very different, and people would like to merge these two theories,” Rodrigues says. But some attempts to do that predict violations of the equivalence principle onÃÂ ...