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Categories: Environmental: Water, Space: Astronomy

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Space: Astronomy Space: Astrophysics Space: General Space: Structures and Features
Published

Origin of intense light in supermassive black holes and tidal disruption events revealed      (via sciencedaily.com)     Original source 

A new study is a significant breakthrough in understanding Tidal Disruption Events (TDEs) involving supermassive black holes. The new simulations accurately replicate the entire sequence of a TDE from stellar disruption to the peak luminosity of the resulting flare.

Offbeat: General Offbeat: Space Space: Astronomy Space: Astrophysics Space: Cosmology Space: Exploration Space: General Space: Structures and Features
Published

Astronomers detect oldest black hole ever observed      (via sciencedaily.com)     Original source 

Researchers have discovered the oldest black hole ever observed, dating from the dawn of the universe, and found that it is 'eating' its host galaxy to death.

Environmental: Ecosystems Environmental: General Environmental: Water Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Severe Weather
Published

Climate change isn't producing expected increase in atmospheric moisture over dry regions      (via sciencedaily.com)     Original source 

The warming climate has not lead to an expected increase in atmospheric moisture over arid and semi-arid regions of the world. The finding, which has surprised scientists, indicates that some regions may be even more vulnerable to future wildfires and extreme heat than projected.

Engineering: Nanotechnology Offbeat: General Offbeat: Space Physics: Optics Space: Astronomy Space: Exploration Space: General Space: Structures and Features
Published

The metalens meets the stars      (via sciencedaily.com)     Original source 

Researchers have developed a 10-centimeter-diameter glass metalens that can image the sun, the moon and distant nebulae with high resolution. It is the first all-glass, large-scale metalens in the visible wavelength that can be mass produced using conventional CMOS fabrication technology.

Environmental: Ecosystems Environmental: General Environmental: Water Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geochemistry Geoscience: Geography Mathematics: Modeling
Published

New AI makes better permafrost maps      (via sciencedaily.com)     Original source 

New insights from artificial intelligence about permafrost coverage in the Arctic may soon give policy makers and land managers the high-resolution view they need to predict climate-change-driven threats to infrastructure such as oil pipelines, roads and national security facilities.

Space: Astronomy Space: Astrophysics Space: Cosmology Space: Exploration Space: General Space: Structures and Features
Published

Study delivers detailed photos of galaxies' inner structures      (via sciencedaily.com)     Original source 

High-resolution images captured by the James Webb Space Telescope are offering powerful insights into the complex dust patterns of nearby star-forming galaxies.

Archaeology: General Environmental: Ecosystems Environmental: Water Geoscience: Earth Science Geoscience: Environmental Issues Paleontology: Climate
Published

Stalagmites as climate archive      (via sciencedaily.com)     Original source 

When combined with data from tree-ring records, stalagmites can open up a unique archive to study natural climate fluctuations, a research team has demonstrated. The researchers analyzed the isotopic composition of oxygen in a stalagmite formed from calcareous water in a cave in southern Germany. In conjunction with the data acquired from tree rings, they were able to reconstruct short-term climate fluctuations over centuries and correlate them with historically documented environmental events.

Biology: Biochemistry Environmental: Ecosystems Environmental: Water Geoscience: Environmental Issues
Published

A new, rigorous assessment of OpenET accuracy for supporting satellite-based water management      (via sciencedaily.com)     Original source 

Sustainable water management is an increasing concern in arid regions around the world, and scientists and regulators are turning to remote sensing tools like OpenET to help track and manage water resources. OpenET uses publicly available data produced by NASA and USGS Landsat and other satellite systems to calculate evapotranspiration (ET), or the amount of water lost to the atmosphere through soil evaporation and plant transpiration, at the level of individual fields. This tool has the potential to revolutionize water management, allowing for field-scale operational monitoring of water use, and a new study provides a thorough analysis of the accuracy of OpenET data for various crops and natural land cover types.

Space: Astronomy Space: Astrophysics Space: Cosmology Space: Exploration Space: General Space: Structures and Features
Published

Astronomers produce most sensitive radio image ever of ancient star cluster      (via sciencedaily.com)     Original source 

Astronomers have created the most sensitive radio image ever of a globular cluster, an ancient ball of tightly-packed stars.

Environmental: Ecosystems Environmental: General Environmental: Water Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geography Geoscience: Oceanography
Published

Chasing the light: Study finds new clues about warming in the Arctic      (via sciencedaily.com)     Original source 

The Arctic, Earth's icy crown, is experiencing a climate crisis like no other. It's heating up at a furious pace -- four times faster than the rest of our planet. Researchers are pulling back the curtain on the reduction of sunlight reflectivity, or albedo, which is supercharging the Arctic's warming.

Environmental: Water Geoscience: Environmental Issues
Published

Study quantifies how aquifer depletion threatens crop yields      (via sciencedaily.com)     Original source 

Three decades of data have informed a new Nebraska-led study that shows how the depletion of groundwater -- the same that many farmers rely on for irrigation -- can threaten food production amid drought and drier climes. The study found that, due in part to the challenges of extracting groundwater, an aquifer's depletion can curb crop yields even when it appears saturated enough to continue meeting the demands of irrigation.

Space: Astronomy Space: Astrophysics Space: Exploration Space: General Space: Structures and Features Space: The Solar System
Published

Earth-sized planet discovered in 'our solar backyard'      (via sciencedaily.com)     Original source 

Astronomers have discovered a planet closer and younger than any other Earth-sized world yet identified. It's a remarkably hot world whose proximity to our own planet and to a star like our sun mark it as a unique opportunity to study how planets evolve.

Offbeat: General Offbeat: Space Space: Astronomy Space: Astrophysics Space: Exploration Space: General Space: Structures and Features
Published

NASA scientists discover a novel galactic 'fossil'      (via sciencedaily.com)     Original source 

Researchers at NASA's Goddard Space Flight Center have discovered X-ray activity that sheds light on the evolution of galaxies.

Chemistry: General Chemistry: Inorganic Chemistry Chemistry: Organic Chemistry Environmental: General Environmental: Water Geoscience: Environmental Issues Geoscience: Geochemistry Physics: Optics
Published

Capturing greenhouse gases with the help of light      (via sciencedaily.com)     Original source 

Researchers use light-reactive molecules to influence the acidity of a liquid and thereby capture of carbon dioxide. They have developed a special mixture of different solvents to ensure that the light-reactive molecules remain stable over a long period of time. Conventional carbon capture technologies are driven by temperature or pressure differences and require a lot of energy. This is no longer necessary with the new light-based process.

Biology: Biochemistry Biology: Cell Biology Biology: Genetics Biology: Molecular Environmental: General Environmental: Water Geoscience: Earth Science Geoscience: Geochemistry Geoscience: Geology
Published

Study uncovers potential origins of life in ancient hot springs      (via sciencedaily.com)     Original source 

A research team investigated how the emergence of the first living systems from inert geological materials happened on the Earth, more than 3.5 billion years ago. Scientists found that by mixing hydrogen, bicarbonate, and iron-rich magnetite under conditions mimicking relatively mild hydrothermal vent results in the formation of a spectrum of organic molecules, most notably including fatty acids stretching up to 18 carbon atoms in length.

Environmental: Biodiversity Environmental: Ecosystems Environmental: Water Geoscience: Geography Geoscience: Oceanography
Published

Beaches and dunes globally squeezed by roads and buildings      (via sciencedaily.com)     Original source 

Beaches and dunes globally squeezed by roads and buildings. Beaches and dunes are becoming increasingly trapped between rising sea levels and infrastructure. Researchers found that today, when dropped on a random beach anywhere in the world, you only need to walk 390 meters (on average) to find the nearest road or building. And while that short walking distance may seem convenient if you want a day at the beach, it's bad news for our protection against rising sea levels, drinking water supplies and biodiversity.

Space: Astronomy Space: Astrophysics Space: General Space: Structures and Features
Published

Close encounters of the supermassive black hole kind      (via sciencedaily.com)     Original source 

Astrophysicists have confirmed the accuracy of an analytical model that can unlock key information about supermassive black holes and the stars they engulf.

Space: Astronomy Space: Astrophysics Space: Exploration Space: General Space: Structures and Features Space: The Solar System
Published

Our surprising magnetic galaxy      (via sciencedaily.com)     Original source 

A team of astronomers has created the first-ever map of magnetic field structures within a spiral arm of our Milky Way galaxy. Previous studies on galactic magnetic fields only gave a very general picture, but the new study reveals that magnetic fields in the spiral arms of our galaxy break away from this general picture significantly and are tilted away from the galactic average by a high degree. The findings suggest magnetic fields strongly impact star-forming regions which means they played a part in the creation of our own solar system.

Offbeat: General Offbeat: Space Space: Astronomy Space: Astrophysics Space: Cosmology Space: Exploration Space: General Space: Structures and Features
Published

Surprise gamma-ray feature beyond our galaxy      (via sciencedaily.com)     Original source 

Astronomers analyzing 13 years of data from NASA's Fermi Gamma-ray Space Telescope have found an unexpected and as yet unexplained feature outside of our galaxy.