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כתבות אחרונות מאתר 'Phys'
Phys

A rare 'triple-double' radio galaxy discovered using MeerKAT‎

Astronomers have discovered an exceptionally rare radio galaxy that has three distinct pairs of radio lobes. This system falls into a subpopulation of radio galaxies known as "triple-double" radio galaxies (TDRGs). Located nearly 7.5 billion light-years away, this unique system, cataloged as J022248−060934, is only the seventh known example of its kind. A paper outlining this discovery was published in the Monthly Notices of the Royal Astronomical Society on February 25.

17:45
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Phys

Ancient predator species discovered in South Africa challenges what we know about gorgonopsians‎

In a study published in The Anatomical Record, researchers have identified a new species of large-bodied gorgonopsian from the middle Permian. The discovery pushed back the known origins of when these apex predators began evolving large bodies and their unique later skull morphologies.

17:23
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Phys

Tropical volcanic eruptions trigger atmospheric changes that drive droughts in Asia‎

Volcanoes are both captivating and disastrous. Most are likely familiar with the common short-term dangers associated with them: explosive forces, lava, and even atmospheric particles disrupting air traffic. But researchers also explore longer-term impacts of eruptions, as their contributions to broader climate patterns are important, but not well understood. For example, it's known that ejected material can reach high into the atmosphere and cause local or even global cooling to some degree.

17:05
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Phys

Report provides introductory guide on green roofs and walls‎

Green roofs and green walls are no longer niche design features but proven, scalable nature-based solutions that can significantly enhance biodiversity, climate resilience, energy efficiency and human well-being in European cities. This is a central finding of a new knowledge synthesis report prepared by the Science Service for Biodiversity that is being developed by BioAgora in response to a relevant knowledge request submitted by DG Environment to the EC Knowledge Centre for Biodiversity (KCBD).

16:51
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Phys

High-rise living: How weaver ants build leaf nests using living 'zippers' and 'weights'‎

The rainforests of northern Australia are home to extraordinary ant colonies. Instead of dwelling in underground burrows, these ants inhabit canopies of trees, dozens of meters above the ground, inside hollow spheres they construct from tree leaves. During the building process, the ants link their bodies together to form living tools, eventually weaving the leaves into nests using silk threads produced by their larvae—hence their name: weaver ants.

16:51
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Phys

Apollo's impatient old-timers are rooting for NASA's return to the moon with Artemis II launch‎

The people who toiled night and day to put astronauts on the moon during Apollo are thrilled that NASA is finally going back. They just wish these Artemis moonshots had happened sooner while more of Apollo's workforce was still alive.

16:38
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Phys

'Toad-proofing' farms could help stop the march of invasive pest‎

Curtin University research has found farmers making small changes to how they give water to cattle in semi-arid regions could halt the spread of one of Australia's most damaging invasive species—all without disrupting farming operations. Published in Global Ecology and Conservation, the paper reveals straightforward, low-cost changes to cattle troughs and fencing could prevent invasive cane toads from accessing the water they need to survive during hot and dry conditions.

16:26
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Phys

Tracing the evolutionary history of chemical warfare between plants and insects‎

A new study published in Nature Ecology & Evolution connects plant and insect physiology, chemical ecology, molecular function, and evolutionary analysis to offer a new perspective on plant–insect coevolution. The research team was led by Yu-Hsien Lin, Assistant Professor in the Global Agricultural Technology and Genomic Science Program (Global ATGS), International College, National Taiwan University, in collaboration with international research partners and Assistant Professor Ching-Wen Tan at National Chung Hsing University.

16:26
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Phys

Ripples in spacetime and the universe's most controversial number‎

Douglas Adams told us the answer to life, the universe and everything is 42. If only cosmology were so straightforward. Astronomers have been arguing for years about a number every bit as fundamental, and they still can't agree on it.

14:09
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Phys

Thawing permafrost becomes 25 to 100 times more permeable, experiments find‎

Experiments by University of Leeds researchers, published in Earth's Future, have shown that thawing of permafrost makes it between 25 and 100 times more permeable, allowing more climate change forcing gases to escape.

13:54
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