Gravity
Quantum gravity's tangled time  SCIENCE DAILY · 1 day
The theories of quantum mechanics and gravity are notorious for being incompatible, despite the efforts of scores of physicists over the past fifty years. However, physicists have now combined the key elements of the two theories describing the flow of... more
Quantum gravity's tangled time  PHYS.ORG · 1 day
The theories of quantum mechanics and gravity are notorious for being incompatible, despite the efforts of scores of physicists over the past fifty years. However, recently an international team of researchers led by physicists from the University of Vienna, the... more
A heavyweight candidate for dark matter  PHYS.ORG · 2 days
Almost a quarter of the universe stands literally in the shadows. According to cosmologists' theories, 25.8% of it is made up of dark matter, whose presence is signaled essentially only by its gravitational pull. What this... more
Black hole holograms  SCIENCE DAILY · 3 days
Researchers show how a holographic tabletop experiment can be used to simulate the physics of a black hole. This work may lead the way to a more complete theory of quantum gravity that harmonizes quantum mechanics and relativity. more
Best of both worlds: Asteroids and massive mergers  SCIENCE DAILY · 1 week
Researchers are using the Catalina Sky Survey's near-Earth object telescopes to locate the optical counterparts to gravitational waves triggered by massive mergers. more
Shedding light on black holes  PHYS.ORG · 1 week
"Black holes" is one of the most highly searched terms about our universe. There's a fascination with the idea of a region of space having a gravitational pull so strong, nothing can escape its deadly grasp, not even... more
Tug of war around gravity  PHYS.ORG · 2 weeks
In the summer of 2009, theoretical physicist Erik Verlinde had a brainwave that developed into a radical new idea about gravity and the universe as an ocean of information. Ten years later, the last word about this has... more
Modeling a core collapse supernova  PHYS.ORG · 2 weeks
Stars greater than eight solar-masses end their lives spectacularly—as supernovae. These single-star supernovae are called core collapse supernovae because when their dense cores (at this stage composed primarily of iron) are no longer able to withstand the inward... more
ALMA Dives into Black Hole’s ‘Sphere of Influence’  ASTRO WATCH · 2 weeks
What happens inside a black hole stays inside a black hole, but what happens inside a black hole's "sphere of... more
Holography and criticality in matchgate tensor networks  Science Magazine · 2 weeks
The AdS/CFT correspondence conjectures a holographic duality between gravity in a bulk space and a critical quantum field theory on its boundary. Tensor networks have come to provide toy models to understand these bulk-boundary... more
A key piece to understanding how quantum gravity affects low-energy physics  PHYS.ORG · 2 weeks
Researchers have, for the first time, identified the sufficient and necessary conditions that the low-energy limit of quantum gravity theories must satisfy to preserve the main... more
Where in the universe can you find a black hole nursery?  PHYS.ORG · 2 weeks
Gravitational wave researchers at the University of Birmingham have developed a new model that could help astronomers track down the origin of heavy black hole systems... more
ALMA dives into black hole's 'sphere of influence'  PHYS.ORG · 2 weeks
What happens inside a black hole stays inside a black hole, but what happens inside a black hole's "sphere of influence"—the innermost region of a galaxy where a black hole's gravity is... more
Looking for warm dark matter  PHYS.ORG · 3 weeks
In the last century, astronomers studying the motions of galaxies and the character of the cosmic microwave background radiation came to realize that most of the matter in the universe was not visible. About 84% of the matter... more
When plant roots learned to follow gravity  SCIENCE DAILY · 3 weeks
Highly developed seed plants evolved deep root systems that are able to sense Earth's gravity. The 'how and when' of this evolutionary step has, until now, remained unknown. Plant biologists have identified crucial components... more
Dark energy vs. modified gravity: Which one will prevail?  PHYS.ORG · 3 weeks
Einstein's theory of general relativity predicts the existence of dark energy—a mysterious form of energy that permeates space and accelerates the expansion of the Universe. But what if Einstein was... more
When plant roots learned to follow gravity  PHYS.ORG · 3 weeks
Highly developed seed plants evolved deep root systems that are able to sense Earth's gravity. The how and when of this evolutionary step has, until now, remained unknown. Plant biologists at the Institute of... more
Distant 'heavy metal' gas planet is shaped like a football  PHYS.ORG · 3 weeks
The scorching hot exoplanet WASP-121b may not be shredding any heavy metal guitar riffs, but it is sending heavy metals such as iron and magnesium into space. The... more
Analyzing gravity waves at the edge of space  PHYS.ORG · 3 weeks
Jeff Forbes is working on a research project slated for the International Space Station (ISS) to help us better understand and forecast conditions on the edge of space. more
Changes in Earth's gravity field: Unique data series will be continued  PHYS.ORG · 4 weeks
The first gravity maps of the GRACE-FO mission are now available. The twin satellites of the GFZ German Research Centre for Geosciences and NASA continuously measure... more
Relativistic redshift of the star S0-2 orbiting the Galactic center supermassive black hole  Science Magazine · 4 weeks
General Relativity predicts that a star passing close to a supermassive black hole should exhibit a relativistic redshift. We test this using... more
Advancing quantum materials, efficient communication networks  SCIENCE DAILY · 1 month
A new project exploring novel applications of superconducting resonators has discovered these systems may be used to simulate quantum materials impossible to otherwise fabricate. Additionally, they may provide insights to open and fundamental questions in quantum... more
Fastest eclipsing binary, a valuable target for gravitational wave studies  SCIENCE DAILY · 1 month
Observations made with a new instrument developed for use at the 2.1-meter telescope at the National Science Foundation's Kitt Peak National Observatory have led to the discovery of... more
Fastest eclipsing binary, a valuable target for gravitational wave studies  PHYS.ORG · 1 month
Observations made with a new instrument developed for use at the 2.1-meter (84-inch) telescope at the National Science Foundation's Kitt Peak National Observatory have led to the discovery... more
Stephen HawkingAlbert EinsteinSpacetimeCERNNASAExoplanetsBlack HolesGalaxiesGravitational WavesString Theory
FRESH SCIENCE