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Categories: Environmental: Wildfires, Space: Cosmology

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Chemistry: General Chemistry: Inorganic Chemistry Offbeat: General Offbeat: Space Physics: General Space: Astrophysics Space: Cosmology Space: General
Published

Spatial patterns in distribution of galaxies      (via sciencedaily.com) 

In an unlikely pairing, a chemist and an astrophysicist applied the tools of statistical mechanics to find similarities in spatial patterns across length scales.

Environmental: General Environmental: Water Environmental: Wildfires Geoscience: Earth Science Geoscience: Environmental Issues
Published

New model provides improved air-quality predictions in fire-prone areas      (via sciencedaily.com) 

Globally, wildfires are becoming more frequent and destructive, generating a significant amount of smoke that can be transported thousands of miles, driving the need for more accurate air pollution forecasts. Researchers have now developed a deep learning model that provides improved predictions of air quality in wildfire-prone areas and can differentiate between wildfires and non-wildfires.

Environmental: Wildfires Geoscience: Severe Weather
Published

A mechanistic and probabilistic method for predicting wildfires      (via sciencedaily.com) 

In the event of dry weather and high winds, power system-ignited incidents are more likely to develop into wildfires. The risk is greater if vegetation is nearby. A new study provides the methodology for predicting at what point during a high wind storm, powerline ignition is likely.

Environmental: Wildfires Geoscience: Environmental Issues Geoscience: Geochemistry Geoscience: Geography
Published

Smoke particles from wildfires can erode the ozone layer      (via sciencedaily.com) 

A new study finds that smoke particles in the stratosphere can trigger chemical reactions that erode the ozone layer -- and that smoke particles from Australian wildfires widened the ozone hole by 10 percent in 2020.

Ecology: General Ecology: Invasive Species Ecology: Nature Ecology: Research Ecology: Trees Environmental: Ecosystems Environmental: Wildfires Geoscience: Environmental Issues
Published

To help dry forests, fire needs to be just the right intensity, and happen more than once      (via sciencedaily.com) 

Research into the ability of a wildfire to improve the health of a forest uncovered a Goldilocks effect -- unless a blaze falls in a narrow severity range, neither too hot nor too cold, it isn't very good at helping forest landscapes return to their historical, more fire-tolerant conditions.

Environmental: Ecosystems Environmental: Wildfires
Published

Wildfires in 2021 emitted a record-breaking amount of carbon dioxide      (via sciencedaily.com) 

Carbon dioxide emissions from wildfires, which have been gradually increasing since 2000, spiked drastically to a record high in 2021, according to an international team of researchers.

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

Ultracool dwarf binary stars break records      (via sciencedaily.com) 

Astrophysicists have discovered the tightest ultracool dwarf binary system ever observed. The two stars are so close that it takes them less than one Earth day to revolve around each other. In other words, each star's 'year' lasts just 17 hours.

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

AI draws most accurate map of star birthplaces in the Galaxy      (via sciencedaily.com) 

Scientists identified about 140,000 molecular clouds in the Milky Way Galaxy from large-scale data of carbon monoxide molecules, observed in detail by the Nobeyama 45-m radio telescope. Using artificial intelligence, the researchers estimated the distance of each of these molecular clouds to determine their size and mass, successfully mapping the distribution of the molecular clouds in the Galaxy in the most detailed manner to date.

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

Galactic explosion offers astrophysicists new insight into the cosmos      (via sciencedaily.com) 

Using data from the James Webb Space Telescope's first year of interstellar observation, an international team of researchers was able to serendipitously view an exploding supernova in a faraway spiral galaxy.

Environmental: Wildfires Geoscience: Environmental Issues
Published

Experts demand fire safety policy change over health impact of widely used flame retardants      (via sciencedaily.com) 

Leading environmental health experts have called for a comprehensive review of the UK's fire safety regulations, with a focus on the environmental and health risks of current chemical flame retardants.

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

Astronomers discover metal-rich galaxies in early universe      (via sciencedaily.com) 

While analyzing data from the first images of a well-known early galaxy taken by NASA's James Webb Space Telescope (JWST), astronomers discovered a companion galaxy previously hidden behind the light of the foreground galaxy -- one that surprisingly seems to have already hosted multiple generations of stars despite its young age, estimated at 1.4 billion years old.

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

New discovery sheds light on very early supermassive black holes      (via sciencedaily.com) 

Astronomers have discovered a rapidly growing black hole in one of the most extreme galaxies known in the very early Universe. The discovery of the galaxy and the black hole at its center provides new clues on the formation of the very first supermassive black holes.

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

Discovery of massive early galaxies defies prior understanding of the universe      (via sciencedaily.com) 

Six massive galaxies discovered in the early universe are upending what scientists previously understood about the origins of galaxies in the universe.

Ecology: General Ecology: Invasive Species Ecology: Research Ecology: Trees Environmental: Ecosystems Environmental: Wildfires Geoscience: Severe Weather
Published

A fifth of California's Sierra Nevada conifer forests are stranded in habitats that have grown too warm for them      (via sciencedaily.com) 

Researchers created maps showing where warmer weather has left trees in conditions that don't suit them, making them more prone to being replaced by other species. The findings could help inform long-term wildfire and ecosystem management in these 'zombie forests.'

Offbeat: Space Space: Astronomy Space: Astrophysics Space: Cosmology Space: Exploration Space: General Space: The Solar System
Published

James Webb spots super old, massive galaxies that shouldn't exist      (via sciencedaily.com) 

A team of international researchers have identified six candidate galaxies that existed roughly 500 to 700 million years after the Big Bang and are about as big as the modern Milky Way Galaxy -- a feat that scientists didn't think was possible.

Environmental: Ecosystems Environmental: Wildfires Geoscience: Environmental Issues
Published

New technique maps large-scale impacts of fire-induced permafrost thaw in Alaska      (via sciencedaily.com) 

Researchers have developed a machine learning-based ensemble approach to quantify fire-induced thaw settlement across the entire Tanana Flats in Alaska, which encompasses more than 3 million acres. They linked airborne repeat lidar data to time-series Landsat products (satellite images) to delineate thaw settlement patterns across six large fires that have occurred since 2000. The six fires resulted in a loss of nearly 99,000 acres of evergreen forest from 2000 to 2014 among nearly 155,000 acres of fire-influenced forests with varying degrees of burn severity. This novel approach helped to explain about 65 percent of the variance in lidar-detected elevation change.

Space: Astronomy Space: Astrophysics Space: Cosmology Space: Exploration
Published

HETDEX reveals galaxy gold mine in first large survey      (via sciencedaily.com) 

The Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) announced their first publicly released catalog of astronomical objects. Over 200,000 astronomical objects including distant stars and galaxies have been mapped in 3D for the first time. Astronomers will use the data to better determine the Hubble constant, used to gauge the expansion of the universe. Possible 'naked black hole' early highlight of science results from HETDEX survey. TACC systems Corral, Stampede2, and Maverick were used in the data analysis and storage. Data publicly available through JupyterHub notebooks.

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

Footprints of galactic immigration uncovered in Andromeda galaxy      (via sciencedaily.com) 

Astronomers have uncovered striking new evidence for a mass migration of stars into the Andromeda Galaxy. Intricate patterns in the motions of stars reveal an immigration history very similar to that of the Milky Way.

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

Star formation in distant galaxies by the James Webb Space Telescope      (via sciencedaily.com) 

Thanks to the James Webb Space Telescope's first images of galaxy clusters, researchers have, for the very first time, been able to examine very compact structures of star clusters inside galaxies, so-called clumps.