Lopsided Galaxies Shed Light on the Speed of Dark Matter

Lopsided galaxies shed light on the speed of dark matter
Fig. 1. Dynamical friction. The panels depict sparse areas of the universe with dark color and dense areas with light color. The upper panels show the density around a galaxy if the galaxy’s gravity bends (left) or does not bend (right) the trajectories of dark matter particles. The lower panel shows the difference between them, or how the galaxy affects the distribution of dark matter. The arrows represent the acceleration caused by the overdensity behind the galaxy, from which the friction on the center of the galaxy is deducted. Since the arrows have different directions and strengths in different areas, the tidal forces are able to change the shape of a galaxy. Credit: Rain Kipper

In new research published in Astronomy & Astrophysics, researchers have figured out how to precisely c...

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Playing an Instrument linked to better Brain Health in Older Adults

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Playing an instrument linked to better brain health in older adults

Engaging in music throughout your life is associated with better brain health in older age, according to a new study published by experts at the University of Exeter.

Scientists working on PROTECT, an online study open to people aged 40 and over, reviewed data from more than a thousand adults over the age of 40 to see the effect of playing a musical instrument—or singing in a choir—on brain health. Over 25,000 people have signed up for the PROTECT study, which has been running for 10 years.

The team reviewed participants’ musical experience and lifetime exposure to music, alongside results of cognitive testing, to determine whether musicality helps to keep the brain sharp in later life.

The paper, “The...

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3D-Printed Electronic Skin provides promise for Human-Machine Interaction

3D printed electronic skin provides promise for human-machine interaction
Credit: INMYWORK Studio

With more than 1,000 nerve endings, human skin is the brain’s largest sensory connection to the outside world, providing a wealth of feedback through touch, temperature and pressure. While these complex features make skin a vital organ, they also make it a challenge to replicate.

By utilizing nanoengineered hydrogels that exhibit tunable electronic and thermal biosensing capabilities, researchers at Texas A&M University have developed a 3D-printed electronic skin (E-skin) that can flex, stretch and sense like human skin.

“The ability to replicate the sense of touch and integrate it into various technologies opens up new possibilities for human-machine interaction and advanced sensory experiences,” said Dr...

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‘Old Smokers’ and ‘Squalling Newborns’ among Hidden Stars Spotted for First Time

Artist impressions of a so-called 'Old Smoker' red giant star and 'Squalling Newborn' protostar, both observed as part of new research.
Discovery: Pictured main is an artist’s impression of a cloud of gas and dust being thrown out by a new type of red giant star dubbed an ‘old smoker’. It was spotted along with dozens of so-called ‘squalling newborn’ protostars (inset) at the heart of the Milky Way by an international team of astronomers.
Credit
Philip Lucas/University of Hertfordshire
Licence type Attribution (CC BY 4.0)

‘Hidden’ stars including a new type of elderly giant nicknamed an ‘old smoker’ have been spotted for the first time by astronomers.

The mystery objects exist at the heart of our Milky Way galaxy and can sit quietly for decades – fading almost to invisibility – before suddenly puffing out clouds of smoke, according to a new study published today in the Monthly Notices of the Royal Astronomical Societ...

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