A hidden companion star may finally explain why deadly-hot dust survives where planets shouldn’t. A mysterious cloud of ultra-hot dust around Kappa Tucanae A may finally have an explanation: a hidden companion star. The star’s extreme orbit carries it straight through the dust zone, strongly suggesting it plays a key role in keeping the dust alive. This finding could help astronomers untangle one of the biggest challenges in imaging Earth-like exoplanets. It also opens the door to discovering similar hidden companions around other stars.

About 70 light-years from Earth, a star known as Kappa Tucanae A has long puzzled astronomers. It is surrounded by dust heated to more than 1,000 degrees Fahrenheit, glowing intensely while orbiting extremely close to the star...

Researchers at Touro University Nevada have discovered that tiny particles in the blood, called extracellular vesicles (EVs), are a major player in how a group of hormones are shuttled through the body. Physical exercise can stimulate this process.

The findings, published in the journal Proceedings of the National Academy of Sciences, open the door to deeper understanding of hormone circulation and access to the brain, how exercise may trigger changes in energy balance, mental health, and immune function, and circulation of certain drugs.

Blood and other body fluids are teeming with EVs—tiny particles that exist outside of cells...

Our universe is filled with galaxies, in all directions as far as our instruments can see. Some researchers estimate that there are as many as 2 trillion galaxies in the observable universe. At first glance, these galaxies might appear to be randomly scattered across space, but they’re not. Careful mapping has shown that they are distributed across the surfaces of giant cosmic “bubbles” up to several hundred million light-years across. Inside these bubbles, few galaxies are found, so those regions are called cosmic voids. NASA’s Nancy Grace Roman Space Telescope will allow us to measure these voids with new precision, which can tell us about the history of the universe’s expansion.

“Roman’s ability to obse...

Scientists have discovered a way to efficiently transfer electrical current through specific materials at room temperature, a finding that could revolutionize superconductivity and reshape energy preservation and generation.

The paper is published in the journal Physical Review Letters.

The much-sought-after breakthrough hinges on applying high pressure to certain materials, forcing their electrons closer together and unlocking extraordinary electronic behaviors.

“Our research explores how electrons interact inside solid materials—interactions that give rise to remarkable phenomena such as high-temperature superconductivity and charge-density waves (CDWs),” said Dr. Mahmoud Abdel-Hafiez, associate professor of physics at the University of Sharjah.

“These effects are impo...