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Categories: Environmental: Wildfires, Space: Astronomy

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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.

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

Newly discovered form of salty ice could exist on surface of extraterrestrial moons      (via sciencedaily.com)     Original source 

An international team has found two new crystal structures for salty ice, or solid hydrate made from water and sodium chloride. The newly discovered material's properties match those of the substance seen on the surface of icy moons, like Europa and Ganymede, and may offer clues to their icy oceans.

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

Astrophysics: Scientists observe high-speed star formation      (via sciencedaily.com)     Original source 

New observations have brought to light that stars can form through the dynamic interaction of gas within interstellar gas clouds. This process unfolds faster than previously assumed, research within the FEEDBACK programme on board the flying observatory SOFIA revealed.

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

Tadpole playing around black hole      (via sciencedaily.com)     Original source 

A peculiar cloud of gas, nicknamed the Tadpole due to its shape, appears to be revolving around a space devoid of any bright objects. This suggests that the Tadpole is orbiting a dark object, most likely a black hole 100,000 times more massive than the Sun. Future observations will help determine what is responsible for the shape and motion of the Tadpole.

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

A star is born: Nearby galaxies provide clues about star formation      (via sciencedaily.com) 

Researchers have released their findings on polycyclic aromatic hydrocarbons in the interstellar medium of nearby galaxies.

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

Four classes of planetary systems      (via sciencedaily.com) 

Astronomers have long been aware that planetary systems are not necessarily structured like our solar system. Researchers have now shown that there are in fact four types of planetary systems.

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: Exploration Space: Structures and Features Space: The Solar System
Published

Hubble captures the start of a new spoke season at Saturn      (via sciencedaily.com) 

Since their discovery by NASA's Voyager mission in the 1980s, temporary 'spoke' features across Saturn's rings have fascinated scientists, yet eluded explanation. They have been observed in the years preceding and following the planet's equinox, becoming more prominent as the date approaches. Saturn's upcoming autumnal equinox of the northern hemisphere on May 6, 2025, means that spoke season has come again. NASA's Hubble Space Telescope will be on the job studying the spokes, thanks to time dedicated to Saturn in the mission's ongoing Outer Planet Atmospheres Legacy (OPAL) program. Are the smudgy features related to Saturn's magnetic field and its interaction with the solar wind, as prevailing theory suggests? Confirmation could come in this spoke season, as scientists combine archival data from NASA's Cassini mission with new Hubble observations.

Space: Astronomy Space: Astrophysics Space: Exploration Space: The Solar System
Published

Space dust as Earth's sun shield      (via sciencedaily.com) 

Dust launched from the moon's surface or from a space station positioned between Earth and the sun could reduce enough solar radiation to mitigate the impacts of climate change.

Offbeat: Space Space: Astronomy Space: Exploration Space: The Solar System
Published

A new ring system discovered in our Solar System      (via sciencedaily.com) 

Scientists have discovered a new ring system around a dwarf planet on the edge of the Solar System. The ring system orbits much further out than is typical for other ring systems, calling into question current theories of how ring systems are formed.

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.

Computer Science: General Space: Astronomy Space: Astrophysics Space: Exploration Space: Structures and Features
Published

Researchers focus AI on finding exoplanets      (via sciencedaily.com) 

New research reveals that artificial intelligence can be used to find planets outside of our solar system. The recent study demonstrated that machine learning can be used to find exoplanets, information that could reshape how scientists detect and identify new planets very far from Earth.

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.

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

'Engine' of luminous merging galaxies pinpointed for the first time      (via sciencedaily.com) 

Roughly 500 million light-years away, near the constellation Delphinus, two galaxies are colliding. Known as merging galaxy IIZw096, the luminous phenomenon is obscured by cosmic dust, but researchers first identified a bright, energetic source of light 12 years ago. Now, with a more advanced telescope, the team has pinpointed the precise location of what they have dubbed the 'engine' of the merging galaxy.

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

Hubble directly measures mass of a lone white dwarf      (via sciencedaily.com) 

Astronomers have directly measured the mass of a single, isolated white dwarf -- the surviving core of a burned-out, Sun-like star. Researchers found that the white dwarf is 56 percent the mass of our Sun. This agrees with earlier theoretical predictions of the white dwarf's mass and corroborates current theories of how white dwarfs evolve as the end product of a typical star's evolution. The unique observation yields insights into theories of the structure and composition of white dwarfs.

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

Astronomers uncover a one-in-ten-billion binary star system: Kilonova progenitor system      (via sciencedaily.com) 

Astronomers using data from the SMARTS 1.5-meter Telescope at the Cerro Tololo Inter-American Observatory (CTIO), have made the first confirmed detection of a star system that will one day form a kilonova -- the ultra-powerful, gold-producing explosion created by merging neutron stars. These systems are so phenomenally rare that only about 10 such systems are thought to exist in the entire Milky Way.

Environmental: Wildfires
Published

Western wildfires destroying more homes per square mile burned      (via sciencedaily.com) 

Between 2010 and 2020, human ignitions started 76% of the Western wildfires that destroyed structures, and those fires tended to be in flammable areas where buildings are increasingly common. Three times as many homes and other structures burned in these ten years than in the previous decade.