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University Of Vienna

All articles tagged with #university of vienna

science1 month ago•3 min saved

New Map Reveals Irreversible 'Highways' Guiding 600 Million Years of Animal Genome Evolution

Researchers at the University of Vienna have mapped the evolutionary history of animal genomes by comparing over 5,800 chromosome-scale assemblies from 4,454 species. The study, published in Science Advances, reveals that animal genomes do not evolve randomly but follow restricted, irreversible pathways termed 'evolutionary highways.' These paths are driven by 'fusion-with-mixing,' a process where chromosomes merge and their genes intermingle, creating permanent structural records. This new framework, evolutionary genome topology, allows scientists to visualize deep evolutionary relationships, identify unique lineages like mosquitoes and earthworms, and potentially predict future genomic changes to aid biodiversity conservation.

via Science Daily|

#biodiversity-conservation #chromosome-architecture #evolutionary-biology

astronomy2 years ago•5 min saved

"First-Ever Detection of Stellar Winds from Sun-Like Stars"

An international research team led by a University of Vienna scientist has directly detected stellar winds from three sun-like stars for the first time by recording the X-ray emission from their astrospheres, placing constraints on the mass loss rate of the stars via their stellar winds. The study, published in Nature Astronomy, observed the spectral fingerprints of oxygen ions with the XMM-Newton space telescope and estimated the mass loss rates of the stars to be much stronger than the solar wind, potentially due to stronger magnetic activity. This breakthrough paves the way for future direct detection and imaging of stellar winds, with implications for understanding stellar and planetary evolution.

via Phys.org|

#astronomy #astrospheres #stellar-winds

science2 years ago•2 min saved

"Direct Imaging of Noble Gas Nanoclusters at Room Temperature"

Researchers have successfully stabilized and directly imaged small clusters of noble gas atoms at room temperature for the first time by trapping them between two graphene layers, overcoming the challenge of noble gases not forming stable structures at room temperature. This breakthrough opens up possibilities for condensed matter physics and applications in quantum information technology, with potential future studies focusing on the properties and behaviors of clusters with different noble gases at varying temperatures.

via Phys.org|

#graphene-layers #noble-gas-clusters #quantum-information-technology

science2 years ago•0 min saved

Unveiling the Secrets of Stars: From Birth to Independence

A groundbreaking study led by astrophysicist Núria Miret-Roig at the University of Vienna has found that traditional methods for determining the age of stars measure different aspects of their lives. Comparing isochronous measurement with dynamical tracking, the study revealed a consistent difference of approximately 5.5 million years, challenging previous notions about the chronology of stars.

via Interesting Engineering|

#age-determination #astrophysics #research