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Phys.org / Unusual signal may prove existence of primordial black holes
It may well take years to prove, but a pair of University of Miami astrophysicists could be on the verge of a cosmic breakthrough that will confirm the existence of primordial black holes and the role they play in one of ...
Phys.org / Earth's 40,000-year tilt cycle links Antarctic ice growth to subtropical productivity
Cycles in the growth and decay of Antarctica's ice sheets once shaped marine biological productivity thousands of miles away in the subtropical ocean, according to new research led by scientists at the University of Wisconsin-Madison. ...
Phys.org / Distant galaxy fades 20-fold in just two decades, challenging how supermassive black holes evolve
An international team led by a researcher at the Chiba Institute of Technology has discovered an extremely rare phenomenon: a galaxy about 10 billion light-years away whose brightness dropped to one-twentieth of its original ...
Phys.org / Chandra resolves why black holes hit the brakes on growth
Astronomers have an answer for a long-running mystery in astrophysics: why is the growth of supermassive black holes so much lower today than in the past? A study using NASA's Chandra X-ray Observatory and other X-ray telescopes ...
Phys.org / Scandinavia's largest 'burial mound' may be a monument to catastrophe, not a king
New LiDAR analysis suggests Raknehaugen may have been built in response to a devastating landslide, not to honor a high-status individual. The study by Dr. Lars Gustavsen, published in the European Journal of Archaeology, ...
Phys.org / Novel measurement confirms a 50-year-old prediction: Dark points are faster than light
A research group from the Technion-Israel Institute of Technology reports in Nature an unprecedented achievement in electron microscopy: the direct measurement of "dark points" within light waves. By doing so, the researchers ...
Phys.org / Uncovering the evolutionary limits of the COVID-19 virus
A new paper in Genome Biology and Evolution, indicates that while the COVID-19 virus has developed rapidly since 2019, it has done so within limited genetic channels. These genetic limits have remained unchanged. Despite ...
Phys.org / JWST solves decades-long mystery about why Saturn appears to change its spin
Researchers at Northumbria University have used the most powerful space telescope ever built to answer one of the longest-standing puzzles in planetary science—why does Saturn appear to spin at a different speed depending ...
Phys.org / What's for dinner? Tooth enamel reveals what early Mesopotamians really ate
We can learn a great deal about the lives and social structures of civilizations thousands of years ago by studying what they ate. While actual food remains are few and far between, scientists can reconstruct ancient menus ...
Phys.org / Massive insect body size 300 million years ago may not have been due to high atmospheric oxygen
Three-hundred-million years ago, Earth was very different. The continents had coalesced into Pangea, which was dominated in its equatorial regions by vast coal-swamp forests. With high atmospheric oxygen levels, wildfires ...
Phys.org / Extreme global climate outcomes are possible even at 2°C warming, study warns
Extreme climate impacts on people and the environment are often associated with very high levels of global warming (3 or 4°C). A new study led by the Helmholtz Centre for Environmental Research (UFZ) shows that this assumption ...
Phys.org / AI-driven framework uncovers new carbon structures—one thought to be harder than diamond
Through new improvements to existing AI models, researchers in China have created a framework that can methodically identify useful new forms of solid carbon. With their approach, Zhibin Gao and colleagues at Xi'an Jiaotong ...
