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Drug Restores Liver Function in Aging Rats And Halves Levels of an Alzheimer’s-Linked Protein

The liver clears substances from our blood, but parts of this system become less efficient as we age.

Scientists have now restored some of that lost function in older rats with an experimental drug, halving blood levels of a protein fragment linked to Alzheimer’s disease.

The treatment also lowered cholesterol. After that second finding, the researchers discovered that the drug restored communication between neighboring liver cells.

Rubin Observatory discovers two hidden companions of the Milky Way. Hundreds more may be waiting

The powerful new Vera C. Rubin Observatory in Chile has already uncovered two previously unknown companions of the Milky Way, offering an early glimpse of what could become a much larger wave of discoveries. Astronomers believe hundreds of faint galaxies may still be hiding around our galaxy, and the observatory could finally bring many of them into view.

Located on Cerro Pachón in the Chilean Andes, the recently completed NSF-DOE Vera C. Rubin Observatory is designed to explore the sky in extraordinary detail. Its initial observations have now revealed two elusive objects that had escaped detection, demonstrating the telescope’s ability to find some of the faintest members of our galactic neighborhood.

A Mysterious Asteroid Is Accelerating in Space, And We’re Running Out of Explanations

Most asteroids are pretty predictable.

They just do what they’re told, pushed and tugged by external forces such as gravity or radiation pressure from the Sun.

Not 1998 KY26.

KY26 is hooning about like a ne’er-do-well – that is, accelerating in a way that defies expectations for how a well-brought-up asteroid ought to behave.

Scientists build an electric motor from a single molecule; an ancient Archimedes screw inspires a machine that can reverse its rotation

Scientists have developed an electrically powered motor using a single molecule, drawing inspiration from the ancient Archimedes screw. The molecular machine can rotate when an electric voltage is applied, and researchers can reverse its direction by changing the voltage polarity.