Cosmological Enigma of Milky Way’s Satellite Galaxies Solved

Simulation.jpeg
One of the new high-resolution simulations of the dark matter enveloping the Milky Way and its neighbour, the Andromeda galaxy. The new study shows that earlier, failed attempts to find counterparts of the plane of satellites which surrounds the Milky Way in dark matter simulations was due to a lack of resolution.
CREDIT
Till Sawala/Sibelius collaboration

Astronomers say they have solved an outstanding problem that challenged our understanding of how the universe evolved—the spatial distribution of faint satellite galaxies orbiting the Milky Way.

These satellite galaxies exhibit a bizarre alignment—they seem to lie on an enormous thin rotating plane—called the “plane of satellites.”

This seemingly unlikely arrangement had puzzled astronomers for over 50 years, leading many to...

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Found: A Protective Probiotic for ALS

Audrey Labarre et Alex Parker
Audrey Labarre and Alex Parker

A probiotic bacterium called Lacticaseibacillus rhamnosus HA-114 prevents neurodegeneration in the C. elegans worm, an animal model used to study amyotrophic lateral sclerosis (ALS). That’s the finding of a new study at Canada’s CHUM Research Centre (CRCHUM) led by Université de Montréal neuroscience professor Alex Parker and published in the journal Communications Biology.

He and his team suggest that the disruption of lipid metabolism contributes to this cerebral degeneration, and show that the neuroprotection provided by HA-114, a non-commercial probiotic, is unique compared to other strains of the same bacterial family tested.

“When we add it to the diet of our animal model, we notice that it suppresses the progression of motor neuron degenera...

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New Software based on Artificial Intelligence helps to Interpret Complex Data

Scientific Reports (2022): Unsupervised realworld knowledge extraction via disentangled variational autoencoders for photon diagnostics
Gregor Hartmann, Gesa Goetzke, Stefan Düsterer, Peter FeuerForson, Fabiano Lever, David Meier, Felix Möller, Luis Vera Ramirez, Markus Guehr, Kai Tiedtke, Jens Viefhaus & Markus Braune
DOI: 10.1038/s41598-022-25249-4

Experimental data is often not only highly dimensional, but also noisy and full of artefacts. This makes it difficult to interpret the data. Now a team at HZB has designed software that uses self-learning neural networks to compress the data in a smart way and reconstruct a low-noise version in the next step. This enables to recognise correlations that would otherwise not be discernible...

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NASA gets unusually close glimpse of Black Hole Snacking on Star

A disk of hot gas swirls around a black hole in this illustration. The stream of gas stretching to the right is what remains of a star that was pulled apart by the black hole. A cloud of hot plasma (gas atoms with their electrons stripped away) above the black hole is known as a corona. Credit: NASA/JPL-Caltech

Recent observations of a black hole devouring a wandering star may help scientists understand more complex black hole feeding behaviors.

Multiple NASA telescopes recently observed a massive black hole tearing apart an unlucky star that wandered too close. Located about 250 million light-years from Earth in the center of another galaxy, it was the fifth-closest example of a black hole destroying a star ever observed.

Once the star had been thoroughly ruptured by the black h...

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