A strange seismological signal that persisted for nine days in 2023 explained Melting glacial ice set off a cascade of events in Greenland in September, ending in tsunami waves bouncing back and forth in a fjord for nine days, with waves reaching heights of 110 meters. The research describes the ice melt triggering a landslide […]
New dinosaur species’ traits hint at ceratopsian migration Scientists have identified a previously unknown dinosaur species, Sasayamagnomus saegusai, that weighed about 10 kilograms and reached about 0.8 meters in length, based on fossil remains from southwestern Japan. The primitive member of the herbivorous ceratopsian group lacks the frills and horns of triceratops and other later […]
Model shows dark matter’s role in black hole mergers A study in Physical Review Letters proposes that self-interacting dark matter aids the merger of supermassive black holes by resolving the final parsec problem. The study shows mathematical modeling that indicates dark matter particles clustered around black holes allow the holes to close the final distance […]
Jupiter spot’s decline may be due to fewer small storms Decreasing numbers of smaller storms that feed Jupiter’s Great Red Spot, the solar system’s largest windstorm, may be causing the spot to shrink, according to 3D simulations. Numerical simulations feeding the Great Red Spot a diet of smaller storms, as has been known to occur […]
You can think of our atmosphere as a big chemistry set, a global churn of gaseous molecules and particles that constantly bounce off and change each other in complicated ways. While the particles are very small, often less than 1% of the thickness of human hair, they have outsized impacts. For example, particles are the […]
Analysis amends human-Neanderthal genetic exchange Human genes may have been replacing Neanderthal genes as long ago as 250,000 years, accounting for the disappearance of the Neanderthal Y chromosome, according to a paper in Science that closely analyzes the gene flow from humans to Neanderthals instead of the reverse, as past research has done. The study […]
As the world’s largest unfrozen freshwater resource, groundwater is crucial for life on Earth. Now, a team of researchers has investigated how global warming is affecting groundwater temperatures and what that means for humanity and the environment . The study indicates that by 2100, more than 75 million people are likely to be living in […]
Denisovans, humans may have shared Tibetan Plateau A 40,000-year-old rib bone from a cave on the Tibetan Plateau adds to limited fossil evidence of Denisovans and suggests modern humans coexisted with these close cousins in the region at the time. The fossil is the youngest Denisovan bone found to date, and researchers say modern Tibetans […]
Made famous in 1995 by NASA’s Hubble Space Telescope, the Pillars of Creation in the heart of the Eagle Nebula have captured imaginations worldwide with their arresting, ethereal beauty. Now, NASA has released a new 3D visualization of these towering celestial structures using data from NASA’s Hubble and James Webb space telescopes. This is the […]
Black holes account for only small fraction of dark matter Contradicting earlier theories, massive black holes are made of a small percentage of dark matter. A team used gravitational microlensing to monitor nearly 80 million stars over 20 years, finding only 13 microlensing events, which indicates that other factors could explain the gravitational waves found […]