Latest updates for General Relativity

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Recent items include:

  • A star orbiting our galaxy's supermassive black hole tests the limits of relativity
  • This Star Is Racing Around the Milky Way’s Black Hole at 8% the Speed of Light
  • Frame-dragging observations validate Einstein yet again

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phys.org /1 month ago

A star orbiting our galaxy's supermassive black hole tests the limits of relativity

Although general relativity (GR) is an elegant theory of gravity, we don't often need to use it. For most gravitational interactions, Newton's theory of universal gravitation works...

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scitechdaily.com /3 weeks ago

This Star Is Racing Around the Milky Way’s Black Hole at 8% the Speed of Light

A fast-moving star near the Milky Way’s central black hole could test gravity under unusually extreme conditions. General relativity provides a remarkably precise description of gr...

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phys.org /1 month ago

Frame-dragging observations validate Einstein yet again

More than a century after Albert Einstein first transformed our understanding of gravity, his general theory of relativity continues to withstand ever more demanding experimental t...

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thequantuminsider.com /1 month ago

Scientists Develop Framework to Distinguish Quantum Gravity Signatures

Insider Brief PRESS RELEASE — Everything around us, from atoms and molecules to planets and galaxies, is governed by two extraordinarily successful theories of physics: Quantum mec...

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scientificamerican.com /1 month ago

Einstein’s greatest theory triumphs again in landmark frame-dragging measurement

A best-yet measurement of one of general relativity’s most mind-boggling effects is “another feather in Einstein’s cap”

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physicsworld.com /1 week ago

Frame-dragging measurement around the Earth sets new precision record

Laser-ranging technique proves Einstein right again The post Frame-dragging measurement around the Earth sets new precision record appeared first on Physics World.

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scitechdaily.com /1 month ago

Einstein’s “Greatest Blunder” May Be Breaking Cosmology

Dark energy revived Einstein’s discarded cosmological constant and reshaped the leading model of the universe. In 1917, Albert Einstein had recently completed his general theory of...

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arstechnica.com /1 month ago

An orbiting disco ball gave Einstein’s theory its most precise test yet

The Earth may not be that massive, but it still distorts space-time.

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scitechdaily.com /1 month ago

Quantum Gravity May Be Far Less Quantum Than Physicists Expected

A new study reveals that some proposed signatures of quantum gravity may have an unexpected classical explanation. Imagine placing an object in two locations at once. Quantum mecha...

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scitechdaily.com /4 weeks ago

Mathematician Offers New Solution to a Fundamental Cosmic Paradox

New research examines how gravity can be reconciled with thermodynamics through the Gravity from Entropy theory. Galaxies, stars, planets, and life emerged as the Universe expanded...

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universetoday.com /1 month ago

A Star Orbiting Our Galaxy's Supermassive Black Hole Tests the Limits of Relativity

A Sun-like star orbits the supermassive black hole in our Milky Way so closely that it comes within the distance of Neptune's orbit of the Sun. It has a top speed of more than 8% o...

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universetoday.com /4 days ago

The Fastest Star in the Milky Way Will Test Relativity

Astronomers have discovered another S star, the population of stars that orbits the Milky Way's SMBH. This one is the fastest of them all, and also comes closest to the SMBH. It wi...

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medium.com /1 month ago

What a Tensor Really Is

Why Gravity and Your GPU Run on the Same ObjectContinue reading on Medium »

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backreaction.blogspot.com /1 month ago

Physicists Say They Know the Origin of Gravity

Recently, a pair of researchers made a massive breakthrough in the foundations of physics. In their paper, they describe how gravity is an emergent property. More specifically, the...

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sciencealert.com /3 weeks ago

Black Hole Singularity May Be a 3D Surface Where General Relativity Goes to Die

We can explain.ScienceAlert stories are written, fact-checked, and edited by humans, never generated by AI. Don't miss a story, subscribe here.

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universetoday.com /1 month ago

What's It Like to Travel Near the Speed of Light? Part 3: The Limited View

Constant acceleration builds a horizon out of nothing but motion, walling off part of the universe forever. Meet Wolfgang Rindler, the coffee date you'll never reach, and the light...

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habr.com /1 month ago

Теория относительности — это синус. Мнимого угла

То, что свет нельзя обогнать, сложение скоростей, замедление времени — всё это стоит на обычном школьном синусе, которому угол сделали мнимым. Не метафора и не «похоже» — буквально...

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scienceandculture.com /1 week ago

New Light on Dark Energy Points to Our Privileged Space

Modern astronomy relies not only on bigger telescopes and more sophisticated instruments, but upon computational power. Source

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scienceandculture.com /1 week ago

The Delicate Balance of Dark Energy

The nature of dark energy brings to light one of the most powerful pieces of evidence for just how special our universe is to support life. Source

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newscientist.com /1 month ago

Random wobbles in time could finally solve gravity’s greatest mystery

The question of how gravity interacts with the quantum world has long perplexed physicists, but a non-quantum theory of space-time could present an answer

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phys.org /1 month ago

Listening to 'ringing' black holes unlocks future gravitational-wave astronomy

Listening to the "ringing" produced by black holes after they collide and merge could allow scientists to test Einstein's theory of general relativity under the most extreme condit...

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phys.org /1 month ago

Quantum-gravitational mechanism could explain the universe's homogeneity

Our universe is known to be remarkably homogeneous and isotropic. This essentially means that matter is distributed evenly throughout the universe and that it looks almost the same...

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habr.com /1 week ago

Постоянство Хаббла. Странные признаки изменчивости тёмной энергии

Если вы когда‑либо слышали о «величайшей ошибке Эйнштейна» — скорее всего, речь шла о космологической постоянной. Это был поправочный коэффициент, который Эйнштейн ввёл в свои урав...

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scientificamerican.com /1 week ago

107 years ago, the Eddington total eclipse experiment helped prove Einstein’s theory of relativity

The Eddington experiment used a solar eclipse to prove Albert Einstein’s general theory of relativity

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