Mimas’ surprise: Tiny Moon holds Young Ocean beneath Icy Shell

Mimas' surprise: Tiny moon holds young ocean beneath icy shell
Mimas measurements and ocean models. The amplitude of libration in longitude ϕs and periapsis drift variation Δϖ for different internal structure models with an ocean. The colors represent the thickness of the ice crust hs. The gray areas correspond to the measured libration amplitude and perihelion longitude variation. The dispersion represents sensitivity to the crustal polar and equatorial flattenings (see additional tests in Methods). Credit: Nature (2024). DOI: 10.1038/s41586-023-06975-9

Hidden beneath the heavily cratered surface of Mimas, one of Saturn’s smallest moons lies a secret: a global ocean of liquid water. This astonishing discovery, led by Dr...

Read More

Chemists Decipher Reaction Process that could Improve Lithium-Sulfur Batteries

Electric battery
Research by UCLA chemists on the sulfur reduction reaction in lithium-sulfur batteries could lead to crucial advancements in battery capacity, speed and life span.

A combination of battery technology and catalysis opens new avenues for cheap, high-capacity batteries. Lithium-sulfur batteries can potentially store five to 10 times more energy than current state-of-the-art lithium-ion batteries at much lower cost. Current lithium-ion batteries use cobalt oxide as the cathode, an expensive mineral mined in ways that harm people and the environment. Lithium-sulfur batteries replace cobalt oxide with sulfur, which is abundant and cheap, costing less than one-hundredth the price of cobalt.

But there’s a catch: Chemical reactions, particularly the sulfur reduction reaction, are very comple...

Read More

Understanding the Moon’s History with Chang’e-5 Sample

Fresh Crater on Oceanus Procellarum
Fresh Crater on Oceanus Procellarum. Credit: NASA/GSFC/Arizona State University

The lunar sample returned by China’s 2020 lunar mission contained minerals that provide clues to their origin. China’s Chang’e-5, the first lunar sample return mission since the Soviet Union’s Luna 24 in 1976, delivered 1.73 kilograms of regolith from the Oceanus Procellarum, a plane named for its vast size. The sample landed with CE-5 in late 2020 and included a new mineral, Changesite-(Y), as well as a perplexing combination of silica minerals. Researchers now compare CE-5’s material composition to other lunar and Martian regolith samples and examine potential causes and origins for the lunar sample’s unique makeup.

Earth’s moon achieved its Swiss cheese appearance from celestial objects crashing into ...

Read More

Scientist shows Focused Ultrasound can Reach Deep into the Brain to Relieve Pain

Research reveals potential of using low-intensity focused ultrasound for pain management. Scientists have found soundwaves from low-intensity focused ultrasound aimed at a place deep in the brain called the insula can reduce both the perception of pain and other effects of pain, such as heart rate changes.

You feel a pain, so you pop a couple of ibuprofen or acetaminophen. If the pain is severe or chronic, you might be prescribed something stronger — an opioid pain killer that can be addictive under some circumstances.

But what if you could ease pain by non-invasively manipulating a spot inside your brain where pain is registered?

A new study by Wynn Legon, assistant professor at the Fralin Biomedical Research Institute at VTC, and his team points to that possibility.

The ...

Read More