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Categories: Geoscience: Oceanography, Space: General
Published Hidden supermassive black holes reveal their secrets through radio signals
(via sciencedaily.com) Astronomers have found a striking link between the amount of dust surrounding a supermassive black hole and the strength of the radio emission produced in extremely bright galaxies.
Published New study definitively confirms Gulf Stream weakening, understanding the changes could help predict future trends in extreme events
(via sciencedaily.com) Original source The Gulf Stream transport of water through the Florida Strait has slowed by 4% over the past four decades, with a 99% certainty that this weakening is more than expected from random chance, according to a new study.
Published Ocean acidification makes ecologically important seaweed species fragile
(via sciencedaily.com) Original source Ocean acidification will likely almost triple by the end of the century -- a drastic environmental change that could impact important marine species like fleshy seaweeds, algae that grow vertically and promote biodiversity in more than a third of the world's coastline. To get a better idea of how seaweeds might fare in a rapidly acidifying ocean, a team of marine scientists subjected a common fleshy seaweed species to the acidification levels expected by the end of the century. They report that increased acidification impacted the seaweed's chemical balance, made both its structure and its tissues weaker, and reduced its overall chances of survival.
Published Astronomers discover newborn galaxies with the James Webb Space Telescope
(via sciencedaily.com) With the launch of the James Webb Space Telescope, astronomers are now able to peer so far back in time that we are approaching the epoch where we think that the first galaxies were created. Throughout most of the history of the Universe, galaxies seemingly tend to follow a tight relation between how many stars they have formed, and how many heavy elements they have formed. But for the first time we now see signs that this relation between the amount of stars and elements does not hold for the earliest galaxies. The reason is likely that these galaxies simply are in the process of being created, and have not yet had the time to create the heavy elements.
Published Astronomers find abundance of Milky Way-like Galaxies in early Universe, rewriting cosmic evolution theories
(via sciencedaily.com) Galaxies from the early Universe are more like our own Milky Way than previously thought, flipping the entire narrative of how scientists think about structure formation in the Universe, according to new research.
Published Carbon source found on surface of Jupiter's moon Europa
(via sciencedaily.com) Astronomers using data from NASA's James Webb Space Telescope have identified carbon dioxide in a specific region on the icy surface of Europa.
Published New development model for the world's third-longest river
(via sciencedaily.com) Original source Researchers reveal rapid fluvial incision attributed to the growth of high topography in China's Yangtze River.
Published Shh! Quiet cables set to help reveal rare physics events
(via sciencedaily.com) Newly developed ultra-low radiation cables reduce background noise for neutrino and dark matter detectors.
Published Long-lasting La Nina events more common over past century
(via sciencedaily.com) Original source Multiyear La Niña events have become more common over the last 100 years, according to a new study. Five out of six La Nina events since 1998 have lasted more than one year, including an unprecedented triple-year event.
Published Mussels able to adjust heart rate to cope with marine heatwaves
(via sciencedaily.com) Original source New research shows that mussels are pretty crafty sea creatures: able to withstand marine heatwaves by adjusting their heart rate and other physiological functions, boding well for their survival in future decades as the world heats up.
Published Riddle of varying warm water inflow in the Arctic now solved
(via sciencedaily.com) Original source In the 'weather kitchen,' the interplay between the Azores High and Icelandic Low has a substantial effect on how much warm water the Atlantic transports to the Arctic along the Norwegian coast. But this rhythm can be thrown off for years at a time. Experts finally have an explanation for why: Due to unusual atmospheric pressure conditions over the North Atlantic, low-pressure areas are diverted from their usual track, which disrupts the coupling between the Azores High, the Icelandic Low and the winds off the Norwegian coast. This finding is an important step toward refining climate models and more accurately predicting the fate of Arctic sea ice in the face of progressing climate change.
Published New Mars gravity analysis improves understanding of possible ancient ocean
(via sciencedaily.com) Original source The first use of a novel method of analyzing Mars' gravitational force supports the idea that the planet once had an extensive northern ocean. In doing so, the method defines the scope of what scientists refer to as the northern Martian paleo-ocean in more detail.
Published Tag team of the James Webb Space Telescope and ALMA captures the core of the most distant galaxy protocluster
(via sciencedaily.com) An international research team has used the James Webb Space Telescope and the Atacama Large Millimeter/submillimeter Array to observe the most distant galaxy protocluster to date, 13.14 billion light-years away. The team has successfully captured the 'core region' of the galaxy protocluster, which corresponds to a metropolitan area with a particularly high number density of galaxies. The team has revealed that many galaxies are concentrated in a small area and that the growth of galaxies is accelerated. Furthermore, the team used simulations to predict the future of the metropolitan area and found that the region will merge into one larger galaxy within tens of millions of years. These results are expected to provide important clues regarding the birth and growth of galaxies.
Published A newly identified virus emerges from the deep
(via sciencedaily.com) Original source Marine virologists analyzed sediment from the Mariana Trench, the deepest place on Earth, and identified a new bacteriophage.
Published Black holes eat faster than previously expected
(via sciencedaily.com) While previous researchers have hypothesized that black holes eat slowly, new simulations indicate that black holes scarf food much faster than conventional understanding suggests. Some quasars brighten and disappear within months -- a time scale that aligns with the new findings.
Published New recipes for origin of life may point way to distant, inhabited planets
(via sciencedaily.com) Original source Life on a faraway planet -- if it's out there -- might not look anything like life on Earth. But there are only so many chemical ingredients in the universe's pantry, and only so many ways to mix them. Scientists have now exploited those limitations to write a cookbook of hundreds of chemical recipes with the potential to give rise to life. Their ingredient list could focus the search for life elsewhere in the universe by pointing out the most likely conditions -- planetary versions of mixing techniques, oven temperatures and baking times -- for the recipes to come together.
Published New findings suggest Moon may have less water than previously thought
(via sciencedaily.com) A team recently calculated that most of the Moon's permanently shadowed regions (PSRs) are at most around 3.4 billion years old and can contain relatively young deposits of water ice. Water resources are considered key for sustainable exploration of the Moon and beyond, but these findings suggest that current estimates for cold-trapped ices are too high.
Published Groundbreaking research shows that the limits of nuclear stability change in stellar environments where temperatures reach billions of degrees Celsius
(via sciencedaily.com) Original source New research is challenging the scientific status quo on the limits of the nuclear chart in hot stellar environments where temperatures reach billions of degrees Celsius.
Published Engineered compound shows promise in preventing bone loss in space
(via sciencedaily.com) Original source Mice treated aboard the International Space Station showed significantly reduced bone loss.
Published Brilliant galaxies of early universe
(via sciencedaily.com) Scientists have used data from the James Webb Space Telescope (JWST) as part of the Cosmic Evolution Early Release Science (CEERS) Survey to change the way we think about the universe and its distant galaxies. Astronomers authored a paper confirming very bright galaxies in the early universe, while also disproving the identification of what would have been the most distant galaxy ever found.