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Categories: Biology: Marine, Space: Structures and Features

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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.

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

Does ice in the Universe contain the molecules making up the building blocks of life in planetary systems?      (via sciencedaily.com)     Original source 

If you want to build a habitable planet, ice is a key ingredient. The ice can be found in enormous clouds in the Universe and it is the main carrier of the necessary elements such as carbon, hydrogen, oxygen, nitrogen and sulphur. These elements are part of the atmosphere around planets and part of molecules like sugar, alcohols and simple amino acids as well. The new James Webb Space Telescope (JWST) has contributed to the discovery of different ices in a molecular cloud, 'Chameleon 1' -- one of the coldest and darkest regions to have ever been explored. Astronomers assume that these types of molecules were also present in the cold cloud of gas and dust forming our own solar system.

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.

Biology: Marine Ecology: Sea Life Offbeat: Plants and Animals
Published

How the fastest fish hunts its prey      (via sciencedaily.com) 

Scientists have designed a novel electronic tag package incorporating high-tech sensors and a video camera in order to document a detailed view of exactly how sailfish behave and hunt once they are on their own and out of view of the surface.

Biology: Marine Ecology: Sea Life Geoscience: Oceanography
Published

Whale warning as clock ticks towards deep-sea mining      (via sciencedaily.com) 

Seabed mining could soon begin in the deep ocean -- but the potential impact on animals including whales is unknown, researchers have warned.

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.

Biology: Marine Ecology: Extinction Ecology: General Ecology: Research Ecology: Sea Life Environmental: Ecosystems Geoscience: Oceanography
Published

Coral reefs in the Eastern Pacific could survive into the 2060s      (via sciencedaily.com) 

Scientists found that some reefs in the tropical Pacific Ocean could maintain high coral cover into the second half of this century by shuffling the symbiotic algae they host. The findings offer a ray of hope in an often-dire picture of the future of coral reefs worldwide.

Biology: Evolutionary Biology: Marine Ecology: Sea Life Environmental: Biodiversity
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Biodiversity engine for fishes: Shifting water depth      (via sciencedaily.com) 

Fish, the most biodiverse vertebrates in the animal kingdom, present evolutionary biologists a conundrum: The greatest species richness is found in the world's tropical waters, yet the fish groups that generate new species most rapidly inhabit colder climates at higher latitudes. A new study helps to explain this paradox. The researchers discovered that the ability of fish in temperate and polar ecosystems to transition back and forth from shallow to deep water triggers species diversification. Their findings suggest that as climate change warms the oceans at higher latitudes, it will impede the evolution of fish species.

Biology: Marine Ecology: Sea Life Geoscience: Oceanography
Published

Due to their feed, chicken and farmed salmon have remarkably similar environmental footprints      (via sciencedaily.com) 

We love our chicken. We love our salmon. Thanks to how we farm these two popular proteins, their environmental footprints are surprisingly similar.

Biology: Marine Ecology: Extinction Ecology: Research Ecology: Sea Life Paleontology: Fossils Paleontology: General
Published

Fossil discovery reveals complex ecosystems existed on Earth much earlier than previously thought      (via sciencedaily.com)     Original source 

About 250 million years ago, the Permian-Triassic mass extinction killed over 80 per cent of the planet's species. In the aftermath, scientists believe that life on earth was dominated by simple species for up to 10 million years before more complex ecosystems could evolve. Now this longstanding theory is being challenged by a team of international researchers.

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.

Biology: Marine Ecology: Sea Life Geoscience: Oceanography
Published

The cod population off the coast of Sweden is not extinct      (via sciencedaily.com)     Original source 

Through DNA analyses, researchers have identified that there are still juvenile coastal cod off the west coast of Sweden. However, it is still difficult to find any mature adult cod in the area.

Biology: Marine Ecology: General Ecology: Research Ecology: Sea Life Environmental: Biodiversity Geoscience: Oceanography
Published

Marine reserves unlikely to restore marine ecosystems      (via sciencedaily.com) 

Protected marine areas are one of the essential tools for the conservation of natural resources affected by human impact -- mainly fishing --, but, are they enough to recover the functioning of these systems? A study now highlights the limitations of marine reserves in restoring food webs to their pristine state prior to the impact of intensive fishing.

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.

Archaeology: General Biology: Marine Offbeat: Paleontology and Archeology Offbeat: Plants and Animals
Published

Caribou have been using same Arctic calving grounds for 3,000 years      (via sciencedaily.com) 

Caribou have been using the same Arctic calving grounds for more than 3,000 years. Female caribou shed their antlers within days of giving birth, leaving behind a record of their annual travels across Alaska and Canada's Yukon that persists on the cold tundra for hundreds or even thousands of years. Researchers recovered antlers that have sat undisturbed on the arctic tundra since the Bronze Age.

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.

Biology: Marine Biology: Microbiology
Published

Why microbes in the deep ocean live without sunlight      (via sciencedaily.com)     Original source 

A new study reverses the idea that the bulk of life in the ocean is fueled by photosynthesis via sunshine, revealing that many ocean microbes in fact get their energy from hydrogen and carbon monoxide. It has always been a mystery as to how microbes growing in deepest parts of the sea survive, with no sunlight. A new study shows that a distinct process called chemosynthesis -- growth using inorganic compounds -- fuels microbes in these darkest depths.

Biology: Marine
Published

Shark bites tied for 10-year low in 2022 but spiked in regional hotspots      (via sciencedaily.com)     Original source 

The number of unprovoked shark attacks worldwide decreased last year, tying with 2020 for the fewest number of reported incidents in the last 10 years. There were a total of 57 unprovoked bites in 2022, most of which occurred in the United States and Australia. Of these, five attacks were fatal, down from nine deaths in 2021 and 10 the year prior.

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.