Relativity
Astronomers Discover Class of Strange Objects Near Our Galaxy’s Enormous Black Hole  ASTRO WATCH · 3 hours
Astronomers from UCLA’s Galactic Center Orbits Initiative have discovered a new class of bizarre objects at the center of our galaxy, not far from... more
Gravity: We might have been getting it wrong this whole time  PHYS.ORG · 2 days
Symmetry has been one of the guiding principles in physicists' search for fundamental laws of nature. What does it mean that laws of nature have symmetry?... more
Simulations reveal galaxy clusters details  PHYS.ORG · 2 days
Inspired by the science fiction of the spacefaring Romulans of Star Trek, astrophysicists have used XSEDE-allocated supercomputers to develop cosmological computer simulations called RomulusC, where the 'C' stands for galaxy cluster. With a focus on black hole physics,... more
Findings highlight multisensory interactions in the human brain  NEWS MEDICAL · 2 days
Gravity is the unseen force that dominates our entire lives. It's what makes walking uphill so difficult and what makes parts of our body eventually point downhill. It is unyielding, everywhere, and... more
General relativity used to find optimal airplane boarding speed  PHYS.ORG · 4 days
A team of researchers from Western Norway University of Applied Sciences, Riga Technical University and Ben-Gurion University has created a mathematical model that can be used to predict boarding times... more
Astronomers Map Surroundings of Supermassive Black Hole  SCI-NEWS.COM · 4 days
As material spirals towards a black hole, it is heated up and emits X-rays that, in turn, echo and reverberate as they... more
Solar Orbiter Earth flyby  ESA · 4 days
Image: Artist's impression of Solar Orbiter making a flyby at Earth.Solar Orbiter will make one gravity assist flyby of Earth and numerous flybys of Venus over the course... more
Wandering Massive Black Holes Detected in Nearby Dwarf Galaxies  SCI-NEWS.COM · 5 days
Astronomers using NSF’s Karl G. Jansky Very Large Array (VLA) at the National Radio Astronomy Observatory have observed... more
Astrophysicists find massive black holes wandering around dwarf galaxies  PHYS.ORG · 5 days
A new search led by Montana State University has revealed more than a dozen massive black holes in dwarf galaxies that were previously considered too small to host them, and... more
Astronomers use 'cosmic echolocation' to map black hole surroundings  PHYS.ORG · 5 days
Material falling into a black hole casts X-rays out into space—and now astronomers have used the echoes of this radiation to map the dynamic behavior and surroundings of a black... more
Wisdom of the crowd? Building better forecasts from suboptimal predictors  SCIENCE DAILY · 6 days
Scientists have shown how to combine the forecasts of a collection of suboptimal 'delay embedding' predictors for time series data. This work may help improve the forecasting of... more
XMM-Newton maps black hole surroundings  ESA · 6 days
Material falling into a black hole casts X-rays out into space – and now, for the first time, ESA’s XMM-Newton X-ray observatory has used the reverberating... more
The dynamic behaviour of a black hole corona  ESA · 6 days
Image: These illustrations show the surroundings of a black hole feeding on ambient gas as mapped using ESA’s XMM-Newton X-ray... more
Spider-Man-style robotic graspers defy gravity  SCIENCE DAILY · 1 week
Traditional methods of vacuum suction and previous vacuum suction devices cannot maintain suction on rough surfaces due to vacuum leakage, which leads to suction failure. Researchers have developed a zero-pressure difference method to enhance the development of vacuum... more
Spider-Man-style robotic graspers defy gravity  PHYS.ORG · 1 week
Specially designed vacuum suction units allow humans to climb walls. Scientists have developed a suction unit that can be used on rough surfaces, no matter how textured, and that has applications in the development of climbing robots and... more
Spider-Man-style robotic graspers defy gravity  nanowerk · 1 week
Scientists have developed a suction unit that can be used on rough surfaces, no matter how textured, and that has applications in the development of climbing robots and robotic arms with grasping capabilities. more
Astrophysicists are Taking Dark Matter’s Temperature  SCI-NEWS.COM · 1 week
Astrophysicists have very little idea of what dark matter is and they have yet to detect a dark matter particle. But they do know... more
A high-resolution summary of Cambrian to Early Triassic marine invertebrate biodiversity  Science Magazine · 1 week
One great challenge in understanding the history of life is resolving the influence of environmental change on biodiversity. Simulated annealing and genetic algorithms were used to... more
Taking the temperature of dark matter  SCIENCE DAILY · 2 weeks
Warm, cold, just right? Physicists are using gravitational lensing to take the temperature of dark matter, the mysterious substance that makes up about a quarter of our universe. more
Astronomers discover class of strange objects near our galaxy's enormous black hole  SCIENCE DAILY · 2 weeks
Astronomers have discovered a new class of bizarre objects at the center of our galaxy, not far from the supermassive black hole called Sagittarius... more
Astronomers discover class of strange objects near our galaxy's enormous black hole  PHYS.ORG · 2 weeks
Astronomers from UCLA's Galactic Center Orbits Initiative have discovered a new class of bizarre objects at the center of our galaxy, not far from... more
High-gravity water waves  PHYS.ORG · 2 weeks
What might look like jelly being stirred is actually water subjected to 20 times normal Earth gravity within ESA's Large Diameter Centrifuge—as part of an experiment giving new insight into the behavior of wave turbulence. more
Astronomers reveal interstellar thread of one of life's building blocks  SCIENCE DAILY · 2 weeks
Phosphorus is an essential element for life as we know it. But how it arrived on the early Earth is something of a mystery. Astronomers have now traced... more
High-gravity water waves  ESA · 2 weeks
Image: What might look like jelly being stirred is actually water subjected to 20 times normal Earth gravity within ESA’s Large Diameter Centrifuge – as part of an experiment giving... more
X-rays and gravitational waves will combine to illuminate massive black hole collisions  SCIENCE DAILY · 2 weeks
A new study has found that collisions of supermassive black holes may be simultaneously observable in both gravitational waves and X-rays at the beginning... more
Solving complex problems at the speed of light  PHYS.ORG · 2 weeks
Many of the most challenging optimization problems encountered in various disciplines of science and engineering, from biology and drug discovery to routing and scheduling can be reduced to NP-complete problems. Intuitively speaking,... more
X-rays and gravitational waves combine to illuminate massive black hole collision  PHYS.ORG · 2 weeks
A new study by a group of researchers at the University of Birmingham has found that collisions of supermassive black holes may be simultaneously observable in... more
AstroSat observations unveil properties of black hole binary MAXI J1820+070  PHYS.ORG · 2 weeks
Simultaneous spectral and temporal observations of the newly detected black hole X-ray binary (BHXB) MAXI J1820+070 using the AstroSat spacecraft, have delivered more insights into the properties of... more
X-rays and gravitational waves will combine to illuminate massive black hole collision  nanowerk · 2 weeks
A new study has found that collisions of supermassive black holes may be simultaneously observable in both gravitational waves and X-rays at the beginning... more
Study shows how insects adjust their physiological responses to gravity  NEWS MEDICAL · 2 weeks
If you jump out of bed too quickly, you might feel a bit light-headed. That's because when you're lying down, gravity causes your blood to pool in the... more
Mysteries of grasshopper response to gravity unlocked  SCIENCE DAILY · 2 weeks
How do insects control the effects of gravity when they climb a tree or hang upside-down waiting for prey? They don't have closed circulatory systems that restrict fluid flow to certain parts of the... more
How do X-ray images helped reveal insects' physiological responses to gravity?  PHYS.ORG · 2 weeks
Imagine you are flipped upside down and standing on your head. After a few seconds, you would feel pressure in your head due to an increased... more
Hubble Uses Quadruple-Image Gravitational Lenses to Capture Small-Scale Clumps of Dark Matter  SCI-NEWS.COM · 2 weeks
According to the widely-accepted ‘cold dark matter’ theory, all galaxies are embedded within clouds of dark matter. Dark matter itself consists of slow-moving particles... more
A stripped helium star solves the massive black hole mystery  SCIENCE DAILY · 2 weeks
Recently, a Chinese team of astronomers claimed to have discovered a black hole as massive as 70 solar masses, which, if confirmed, would severely challenge the current view... more
Stellar black holes: When David poses as Goliath  PHYS.ORG · 2 weeks
Stellar black holes form when massive stars end their life in a dramatic collapse. Observations have shown that stellar black holes typically have masses of about ten times that of the Sun,... more
On the hunt for primordial black holes  PHYS.ORG · 2 weeks
The theory that dark matter could be made of primordial black holes a fraction of a millimeter in size has been ruled out by a team of researchers led by the Kavli Institute for... more
Satellite constellations harvest energy for near-total global coverage  PHYS.ORG · 2 weeks
Think of it as a celestial parlor game: What is the minimum number of satellites needed to see every point on Earth? And how might those satellites stay in orbit and maintain... more
Water could disappear from Mars faster than expected  PHYS.ORG · 2 weeks
Mars is losing water more quickly than theory and observations would suggest. The gradual disappearance of water (H2O) occurs in the upper atmosphere of Mars as sunlight and chemistry disassociate water molecules... more
On the hunt for primordial black holes  nanowerk · 2 weeks
The theory that dark matter could be made of primordial black holes a fraction of a millimetre in size has been ruled out by a team of researchers. more
Hubble detects smallest known dark matter clumps  PHYS.ORG · 2 weeks
When searching for dark matter, astronomers must go on a sort of "ghost hunt." That's because dark matter is an invisible substance that cannot be seen directly. Yet it makes up the bulk of... more
A new tool for 'weighing' unseen planets  PHYS.ORG · 2 weeks
A new instrument funded by NASA and the National Science Foundation called NEID (pronounced "NOO-id"; sounds like "fluid") will help scientists measure the masses of planets outside our solar system—exoplanets—by observing the gravitational pull... more
Researchers take exploration of key 'building block' particles into space  PHYS.ORG · 2 weeks
As part of SpaceX's CRS-19 resupply mission to the International Space Station (ISS) launched Dec. 5, researchers from NASA, New Jersey Institute of Technology (NJIT) and New York... more
Hubble Telescope Surveys Gigantic Galaxy  ASTRO WATCH · 3 weeks
To kickstart the 30th anniversary year of the NASA/ESA Hubble Space Telescope, Hubble has imaged a majestic spiral galaxy. Galaxy UGC 2885 may be the largest... more
Researchers take exploration of key 'building block' particles into space  nanowerk · 3 weeks
As part of SpaceX's CRS-19 resupply mission to the International Space Station (ISS), researchers are set to begin a new scientific investigation to explore how a group of... more
SOFIA Maps Most Energetic Portion of Milky Way  SCI-NEWS.COM · 3 weeks
Astronomers using the Faint Object Infrared Camera for the SOFIA Telescope (FORCAST) instrument onboard NASA’s Stratospheric Observatory for Infrared Astronomy... more
Black hole transient GRS 1716−249 investigated in hard and intermediate states  PHYS.ORG · 3 weeks
Astronomers have investigated a black hole transient known as GRS 1716−249 with NASA's Nuclear Spectroscopic Telescope Array (NuSTAR). The new study provides crucial insights into properties... more
LIGO-Virgo gravitational wave network catches another neutron star collision  PHYS.ORG · 3 weeks
On April 25, 2019, the LIGO Livingston Observatory picked up what appeared to be gravitational ripples from a collision of two neutron stars. LIGO Livingston is part of a gravitational-wave... more
Famous black hole has jet pushing cosmic speed limit  PHYS.ORG · 3 weeks
The Event Horizon Telescope Collaboration released the first image of a black hole with observations of the massive, dark object at the center of Messier 87, or M87, last April.... more
Astronomers find wandering massive black holes in dwarf galaxies  nanowerk · 3 weeks
Astronomers seeking to learn about the mechanisms that formed massive black holes in the early history of the Universe have gained important new clues with the discovery of 13 such... more
Gravitational-Wave Discovery Reveals Spectacular Crash of Neutron Stars, the 2nd Known  LIVE SCIENCE · 3 weeks
For the second time ever, the Laser Interferometer Gravitational-Wave Observatory (LIGO) has spotted two ultradense stellar remnants known as neutron stars violently crashing together. more
Astronomers find wandering massive black holes in dwarf galaxies  SCIENCE DAILY · 3 weeks
Studies with the VLA indicate that roughly half of the massive black holes in dwarf galaxies are not in the centers of those galaxies. This gives astronomers new insights into... more
The turbulent life of two supermassive black holes caught in a galaxy crash  PHYS.ORG · 3 weeks
An international team of astronomers used the Atacama Large Millimeter/submillimeter Array (ALMA) to create the most detailed image yet of the gas... more
Astronomers find wandering massive black holes in dwarf galaxies  PHYS.ORG · 3 weeks
Astronomers seeking to learn about the mechanisms that formed massive black holes in the early history of the Universe have gained important new clues with the discovery of 13 such... more
Researchers build a particle accelerator that fits on a chip  PHYS.ORG · 3 weeks
On a hillside above Stanford University, the SLAC National Accelerator Laboratory operates a scientific instrument nearly 2 miles long. In this giant accelerator, a stream of electrons flows... more
Astronomers Capture Galactic Fireworks in Nearby Spiral Galaxy  SCI-NEWS.COM · 4 weeks
This impressive fireworks display, which involves a supermassive black hole, enormous shock waves and vast reservoirs of gas, is taking... more
Blazar variability  PHYS.ORG · 4 weeks
Active galactic nuclei (AGN) are supermassive black holes at the centers of galaxies that are accreting material. These AGN emit jets of charged particles that move at speeds close to that of light, transporting huge amounts of energy away from... more
Theory of Everything
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Astronomers discover class of strange objects near our galaxy's enormous black hole
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A new tool for 'weighing' unseen planets
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Famous black hole has jet pushing cosmic speed limit
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LIGO-Virgo gravitational wave network catches another neutron star collision
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