IN A NUTSHELL 🌌 Black holes traditionally feature singularities, points of infinite density that challenge existing physics. 🔭 New models propose regular black holes and mimickers that eliminate the need for singularities. 🌀 Regular black holes replace singularities with a finite-density core, maintaining a consistent spacetime geometry. 🚀 These innovative models open new avenues for
Researchers at the National Synchrotron Light Source II (NSLS-II), a U.S. Department of Energy (DOE) Office of Science user facility at DOE’s Brookhaven National Laboratory, depend on the facility’s bright, stable electron beam to carry out groundbreaking experiments. Behind the scenes, a dedicated team of physicists, engineers, designers, and technicians in the facility’s accelerator complex are not only maintaining this system for reliable operation but also looking into ways to improve performance and unlock new areas of synchrotron science for the light source’s research community.
In an inventive new design that has been years in the making, the team has unveiled a proof-of-principle prototype for a new “complex bend” lattice design. This unique magnet array has sparked discussion about some intriguing possibilities for the future of NSLS-II’s accelerator, and the design is lighting the way for necessary next steps.
Science students and academics wrote papers about the mathematics and physics of Ringworld after it was published. Larry Niven discusses whether this would happen if Ringworld was published today.
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Researchers from Tokyo Metropolitan University have solved a long-standing mystery behind the drainage of liquid from foams. Standard physics models wildly overestimate the height of foams required for liquid to drain out the bottom. Through careful observation, the team found that the limits are set by the pressure required to rearrange bubbles, not simply push liquid through a static set of obstacles.
Their approach highlights the importance of dynamics to understanding soft materials. The study is published in the Journal of Colloid and Interface Science.
When you spray foam on a wall, you will often see droplets of liquid trailing out the bottom. That is because foams are a dense collection of bubbles connected by walls of liquid, forming a complex labyrinth of interconnected paths. It is possible for liquid to travel along these paths, either leaving the foam or sucking in liquid which is brought into contact with the foam.
Analyzing massive datasets from nuclear physics experiments can take hours or days to process, but researchers are working to radically reduce that time to mere seconds using special software being developed at the Department of Energy’s Lawrence Berkeley and Oak Ridge national laboratories.
DELERIA—short for Distributed Event-Level Experiment Readout and Integrated Analysis—is a novel software platform designed specifically to support the GRETA spectrometer, a cutting-edge instrument for nuclear physics experiments. The Gamma Ray Energy Tracking Array (GRETA), is currently under construction at Berkeley Lab and is scheduled to be installed in 2026 at the Facility for Rare Isotope Beams (FRIB), at Michigan State University.
The software will enable GRETA to stream data directly to the nation’s leading computing centers with the goal of analyzing large datasets in seconds. The data will be sent via the Energy Sciences Network, or ESnet. This real-time analysis will allow researchers to make critical adjustments to the experiment as it is taking place, leading to increased scientific productivity with significantly faster, more accurate results.
Launched on March 11, NASA’s SPHEREx space observatory has spent the last six weeks undergoing checkouts, calibrations, and other activities to ensure it is working as it should. Now it’s mapping the entire sky—not just a large part of it—to chart the positions of hundreds of millions of galaxies in 3D to answer some big questions about the universe.
On May 1, the spacecraft began regular science operations, which consist of taking about 3,600 images per day for the next two years to provide new insights about the origins of the universe, galaxies, and the ingredients for life in the Milky Way.
“Thanks to the hard work of teams across NASA, industry, and academia that built this mission, SPHEREx is operating just as we’d expected and will produce maps of the full sky unlike any we’ve had before,” said Shawn Domagal-Goldman, acting director of the Astrophysics Division at NASA Headquarters in Washington.
A team of physicists, biologists and engineers at Cornell University, in the U.S., has discovered some of the factors that lead to more or less spray when cutting onions and found a couple of ways to reduce the amount of eye irritation. The group has published a paper describing their study on the arXiv preprint server.
Prior research has shown that eye irritation when cutting onions is caused by the release of syn-propanethial-S-oxide into the air along with other juices in the onion. For this new study, the team in New York wanted to know what factors led to more or less of the juices being spewed into the air during slicing.
To find out, the research team outfitted a special guillotine that could be fitted with different types of blades. They also coated onion chunks with paint to allow for better viewing of the cutting process. They used the guillotine to cut samples, each of which was recorded. Trials varied knife size, sharpness and cutting speed. They even used an electron microscope to accurately measure the knives before use.
Multiple space agencies will send missions to the Moon this decade and the next, with plans to establish infrastructure that will allow for many returns. This includes NASA’s Lunar Gateway and Artemis Base Camp, the Chinese-Roscosmos International Lunar Research Station (ILRS), and the ESA’s Moon Village. With so many space agencies and commercial space companies focused on lunar exploration, there are also multiple plans for establishing research facilities and scientific experiments.
In particular, NASA, China, and the ESA have proposed creating radio astronomy experiments that would operate on the far side of the Moon. In a recent paper, an international team of European astronomers proposed an ultra-long wavelength radio interferometer that could examine the cosmological periods known as the Cosmic Dark Ages and Cosmic Dawn. Known as the Dark Ages Explorer (DEX), this telescope could provide fresh insights into one of the least understood periods in the history of the Universe.
The study was led by Christiaan Brinkerink, a Scientific Engineer with the Radboud Radio Lab (RRL) at Radboud University Nijmegen. He was joined by researchers from the Netherlands Institute for Radio Astronomy (ASTRON), the Eindhoven University of Technology, the Delft University of Technology (TU Delft), the Laboratory for Instrumentation and Research in Astrophysics (LIRA), the Kapteyn Astronomical Institute, the Leiden Observatory, the Cambrige Institute of Astronomy, the Kavli Institute for Cosmology, the European Research Infrastructure Consortium (ERIC), and the ESA’s European Space Research and Technology Center (ESTEC).
In the new study, however, these shapes appeared in calculations describing the energy radiated as gravitational waves when two black holes cruised past one another. This marks the first time they’ve appeared in a context that could, in principle, be tested through real-world experiments.
Mogull likens their emergence to switching from a magnifying glass to a microscope, revealing features and patterns previously undetectable. “The appearance of such structures sheds new light on the sorts of mathematical objects that nature is built from,” he said.
These findings are expected to significantly enhance future theoretical models that aim to predict gravitational wave signatures. Such improvements will be crucial as next-generation gravitational wave detectors — including the planned Laser Interferometer Space Antenna (LISA) and the Einstein Telescope in Europe — come online in the years ahead.
❤️ Check out Lambda here and sign up for their GPU Cloud: https://lambda.ai/papers.
Guide for using DeepSeek on Lambda:
https://docs.lambdalabs.com/education/large-language-models/…dium=video.
📝 AlphaEvolve: https://deepmind.google/discover/blog/alphaevolve-a-gemini-p…lgorithms/
📝 My genetic algorithm for the Mona Lisa: https://users.cg.tuwien.ac.at/zsolnai/gfx/mona_lisa_parallel_genetic_algorithm/
📝 My paper on simulations that look almost like reality is available for free here:
https://rdcu.be/cWPfD
Or this is the orig. Nature Physics link with clickable citations:
https://www.nature.com/articles/s41567-022-01788-5
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