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Categories: Geoscience: Oceanography, Space: Cosmology

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

Another intermediate-mass black hole discovered at the center of our galaxy      (via sciencedaily.com)     Original source 

So far, only about ten intermediate-mass black holes have been discovered in the entire universe. The newly identified black hole causes surrounding stars in a cluster to move in an unexpectedly orderly way.

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

Sea ice's cooling power is waning faster than its area of extent      (via sciencedaily.com)     Original source 

As sea ice disappears and grows less reflective, the Arctic has lost around a quarter of its cooling power since 1980, and the world has lost up to 15%, according to new research.

Biology: Botany Biology: Marine Biology: Microbiology Ecology: General Ecology: Research Ecology: Sea Life Environmental: Ecosystems Geoscience: Geochemistry Geoscience: Geography Geoscience: Oceanography
Published

Reef pest feasts on 'sea sawdust'      (via sciencedaily.com)     Original source 

Researchers have uncovered an under the sea phenomenon where coral-destroying crown-of-thorns starfish larvae have been feasting on blue-green algae bacteria known as 'sea sawdust'.

Biology: General Biology: Marine Biology: Microbiology Ecology: Nature Environmental: General Environmental: Water Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geochemistry Geoscience: Geography Geoscience: Oceanography
Published

Diatom surprise could rewrite the global carbon cycle      (via sciencedaily.com)     Original source 

When it comes to diatoms that live in the ocean, new research suggests that photosynthesis is not the only strategy for accumulating carbon. Instead, these single-celled plankton are also building biomass by feeding directly on organic carbon in wide swaths of the ocean. These new findings could lead to reduced estimates regarding how much carbon dioxide diatoms pull out of the air via photosynthesis, which in turn, could alter our understanding of the global carbon cycle, which is especially relevant given the changing climate.

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

Microplastic pollution increases sea foam height and stability      (via sciencedaily.com)     Original source 

Researchers examine the specific impacts of microplastics on the geophysics of sea foam formation in the critical zone where water meets air in the top layer of the ocean. They devised two simulations for their work -- a column filled with sea water injected with air and a laboratory-scale breaking wave channel to test the impacts of wave height on sea foam in the surface microlayer -- and tested their effects on sea foam formation, stability, and duration.

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

Sun-like stars found orbiting hidden companions      (via sciencedaily.com)     Original source 

Astronomers have uncovered what appear to be 21 neutron stars in orbit around stars like our Sun. The discovery is surprising because it is not clear how a star that exploded winds up next to a star like our Sun.

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

JWST unveils stunning ejecta and CO structures in Cassiopeia A's young supernova      (via sciencedaily.com)     Original source 

Researchers announced the latest findings from the James Webb Space Telescope (JWST) of the supernova remnant, Cassiopeia A (Cas A). These observations of the youngest known core collapse supernova in the Milky Way provide insights into the conditions that lead to the formation and destruction of molecules and dust within supernova ejecta. The study's findings change our understanding of dust formation in the early universe in the galaxies detected by JWST 300 million years after the Big Bang.

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

Cosmic wrestling match      (via sciencedaily.com)     Original source 

Our universe is around 13.8 billion years old. Over the vastness of this time, the tiniest of initial asymmetries have grown into the large-scale structures we can see through our telescopes in the night sky: galaxies like our own Milky Way, clusters of galaxies, and even larger aggregations of matter or filaments of gas and dust. How quickly this growth takes place depends, at least in today's universe, on a sort of wrestling match between natural forces: Can dark matter, which holds everything together through its gravity and attracts additional matter, hold its own against dark energy, which pushes the universe ever further apart?

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

Vivid portrait of interacting galaxies marks Webb's second anniversary      (via sciencedaily.com)     Original source 

Two for two! A duo of interacting galaxies commemorates the second science anniversary of NASA's James Webb Space Telescope, which takes constant observations, including images and highly detailed data known as spectra. Its operations have led to a 'parade' of discoveries by astronomers around the world.

Environmental: General Environmental: Water Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geochemistry Geoscience: Oceanography
Published

High and low tide cause low and high methane fluxes      (via sciencedaily.com)     Original source 

Methane, a strong greenhouse gas that naturally escapes from the bottom of the North Sea, is affected by the pressure of high or low tide. Methane emissions from the seafloor can be just easily three times as much or as little, depending on the tide, according to a new study.

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

How the 'heart and lungs' of a galaxy extend its life      (via sciencedaily.com)     Original source 

Galaxies avoid an early death because they have a 'heart and lungs' which effectively regulate their 'breathing' and prevent them growing out of control, a new study suggests. If they didn't, the universe would have aged much faster than it has and all we would see today is huge 'zombie' galaxies teeming with dead and dying stars. That's according to a new study that investigates one of the great mysteries of the Universe -- why galaxies are not as large as astronomers would expect.

Environmental: Ecosystems Environmental: General Environmental: Water Geoscience: Environmental Issues Geoscience: Geography Geoscience: Oceanography
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Scientists call for 'major initiative' to study whether geoengineering should be used on glaciers      (via sciencedaily.com)     Original source 

Scientists have released a landmark report on glacial geoengineering -- an emerging field studying whether technology could halt the melting of glaciers and ice sheets as climate change progresses.

Environmental: General Environmental: Water Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geography Geoscience: Oceanography Geoscience: Severe Weather
Published

The Gulf Stream is wind-powered and could weaken from climate change      (via sciencedaily.com)     Original source 

New evidence of changes to the Gulf Stream during the last ice age could indicate additional sensitivity to future climatic changes, finds a new study.

Biology: Marine Ecology: General Ecology: Research Ecology: Sea Life Environmental: Ecosystems Geoscience: Environmental Issues Geoscience: Oceanography Offbeat: Earth and Climate Offbeat: General Offbeat: Plants and Animals
Published

Whale remains tracked to highlight sustainable disposal benefits      (via sciencedaily.com)     Original source 

A new study highlights the sustainable, cultural and ecosystem benefits of offshore removal or decomposition of whale remains. The study tracked the remains of a humpback whale that was intercepted before washing up on the shoreline, then repositioned 30km offshore and fitted with a satellite tag that tracked its position as it drifted with the wind and currents for 6 days before falling to the seabed.

Biology: Biochemistry Biology: Marine Biology: Zoology Ecology: Sea Life Environmental: Ecosystems Environmental: General Geoscience: Geography Geoscience: Oceanography Geoscience: Severe Weather Offbeat: Earth and Climate Offbeat: General Offbeat: Plants and Animals
Published

Groundbreaking study reveals oceanic seabirds chase tropical cyclones      (via sciencedaily.com)     Original source 

A new study reveals that the rare Desertas Petrels (Pterodroma deserta), a wide-ranging seabird in the North Atlantic, exhibit unique foraging behaviors during hurricane season. Contrary to other pelagic seabirds, these petrels do not avoid intense tropical cyclones but instead exploit the dynamic conditions for their benefit, providing new insights into the impact of cyclones on open ocean marine life.

Geoscience: Earth Science Geoscience: Geochemistry Geoscience: Geography Geoscience: Oceanography
Published

Weaker ocean circulation could enhance carbon dioxide buildup in the atmosphere, study finds      (via sciencedaily.com)     Original source 

Scientists may have to rethink the relationship between the ocean's circulation and its long-term capacity to store carbon, new research suggests. As the ocean gets weaker, it could release more carbon from the deep ocean into the atmosphere -- rather than less, as some have predicted.

Environmental: General Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geography Geoscience: Oceanography Paleontology: Climate Paleontology: General
Published

The dawn of the Antarctic ice sheets      (via sciencedaily.com)     Original source 

In recent years global warming has left its mark on the Antarctic ice sheets. The 'eternal' ice in Antarctica is melting faster than previously assumed, particularly in West Antarctica more than East Antarctica. The root for this could lie in its formation, as an international research team has now discovered: sediment samples from drill cores combined with complex climate and ice-sheet modelling show that permanent glaciation of Antarctica began around 34 million years ago -- but did not encompass the entire continent as previously assumed, but rather was confined to the eastern region of the continent (East Antarctica).

Biology: Biochemistry Biology: Cell Biology Biology: Microbiology Ecology: Nature Environmental: Ecosystems Environmental: General Geoscience: Earth Science Geoscience: Environmental Issues Geoscience: Geochemistry Geoscience: Oceanography
Published

Retreating glaciers: Fungi enhance carbon storage in young Arctic soils      (via sciencedaily.com)     Original source 

Melting Arctic glaciers are in rapid recession, and microscopic pioneers colonize the new exposed landscapes. Researchers revealed that yeasts play an important role in soil formation in the Arctic.