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Read about the recent stunning image of Jupiter’s moon, Io, obtained by NASA’s Juno spacecraft on Dec 30, 2023!

Jupiter’s first Galilean moon, Io, is one of the most fascinating objects in the entire solar system, exhibiting hundreds of volcanoes that send molten lava hundreds of miles into space, some of which come raining back down onto the small moon’s surface. While Io was explored in depth with NASA’s Galileo spacecraft during the late 1990s and early 2000s, Io hasn’t been imaged up close since then. But NASA’s Juno spacecraft recently broke this dry spell when it passed within 930 miles (1,500 kilometers) of Io’s surface on December 30, 2023, capturing stunning images of active volcanic plumes and several lava fields.

Image of Jupiter’s moon Io, obtained by NASA’s Juno spacecraft on Dec 30, 2023, with its night side being illuminated by reflected sunlight bouncing off Jupiter, also called “Jupitershine.” (Credit: NASA/JPL-Caltech/SwRI/MSSS Image processing by Emma Wälimäki © CC BY)

While this encounter was less than 1,000 miles from Io’s surface, Juno previously snapped images of Io in October 2023, though at just over 7,000 miles (11,000 kilometers). The Juno team made another close flyby only days ago, also coming within 930 miles (1,500 kilometers) of Io’s surface, and these images should be released soon.

Continue reading “Exploring Io: Juno’s Closest Flybys in Over 20 Years Unveil Spectacular Views” | >

A protein that has been widely studied owing to its association with neurodegenerative diseases such as amyotrophic lateral sclerosis (ALS) is also linked to medulloblastoma, a type of central nervous system cancer. Medulloblastoma is one of the most common and aggressive brain tumors in children, arising from undifferentiated cells during early neural development.

A study led by a group of Brazilian scientists has shown in vitro and in vivo that the gene VAPB is linked to in these tumors. An article on the study is published in the journal Scientific Reports.

The discovery points to a potential marker of severity and, after more research, a future therapeutic target. Medulloblastoma is currently treated with a combination of surgery to remove the tumor and radiation therapy and/or chemotherapy, both of which are aggressive and can cause long-lasting brain damage.

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Apple today released the first beta of an upcoming visionOS 1.1 update for developers, allowing developers to test new features ahead of the software seeing a public launch. This is the first beta version of ‌visionOS‌ software that Apple has made available since the headset launched last Friday.

The ‌visionOS‌ beta can be downloaded by going to the Settings app on the device and toggling on developer betas. A registered developer account is required, and Apple recommends making a backup before installing new software.

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The University of Rochester’s Laboratory for Laser Energetics (LLE) has just thrown a spark into the fusion energy race. In a series of experiments, scientists at LLE pioneered a revolutionary “spark plug” for direct-drive inertial confinement fusion (ICF) methods. This development could be vital to unlocking the future of clean and abundant energy.

The LLE is home to the large OMEGA laser system. They conducted experiments that fired 28 kilojoules of laser energy at small capsules filled with deuterium and tritium fuel. The result? Capsules implode, creating a plasma hot enough to kickstart fusion reactions between the fuel nuclei.

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A common practice of prescribing anticoagulants to people who have had unexplained strokes should stop, according to a study led by researchers at Columbia, Weill Cornell Medicine, and the University of Washington and published in JAMA.

Anticoagulants were thought to prevent additional strokes in people whose initial stroke has an unknown cause but who have a heart condition, atrial cardiopathy, that resembles atrial fibrillation, a common cause of stroke.

“We know these drugs work for people with atrial fibrillation, so we thought that they would probably work for people with atrial cardiopathy as well,” says Mitchell Elkind, MD, professor of neurology at the Vagelos College of Physicians and Surgeons and one of the study’s leaders. “That was the basis for the trial.”

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The existence and physical properties of topological excitations in ferroelectrics, especially mobile topological boundaries in one dimension, are of profound interest. Notably, topological excitations emerging in association with the neutral–ionic (NI) phase transition are theoretically suggested to carry fractional charges and cause anomalous charge transport. In recent years, we experimentally demonstrated mobile topological excitations in a quasi-one-dimensional (1D) ferroelectric, tetrathiafulvalene-p-chloranil[TTF-CA; TTF (C6H4S4) and CA (C6Cl4O2)], which shows the NI transition, using NMR, NQR, and electrical resistivity measurements. Thermally activated topological excitations carry charges and spins in the NI crossover region and in the ionic phase with a dimer liquid.

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