Physics

Startling New Features of Mysterious Fast Radio Bursts Challenge Current Understanding

Startling New Features of Mysterious Fast Radio Bursts Challenge Current Understanding

Artist’s conception of the Five Hundred Meter Aperture Spherical Radio Telescope (FAST) in China. 1 credit Fast Radio Bursts – A Confusing and Deepening Mystery An international team of scientists reveals an evolving magnetized environment and a surprising source location for fast radio bursts in deep space – observations that challenge current understanding. Fast radio …

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yellow/red ball with streaks emerging

Scientists trace high-energy particles to solar plasma

Scientists may have discovered when and how high-energy particles that bombard Earth and other objects emerge from violent environments such as the sunshine atmosphere. These high-energy particles pose a risk to delicate satellite technology and astronauts, and can even affect planes flying over the North Pole. Although researchers have been studying these particles for decades, …

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Planetary-scale 'heat wave' discovered in Jupiter's atmosphere

Planetary-scale ‘heat wave’ discovered in Jupiter’s atmosphere

Europlanet Media Center A panoramic view of Jupiter’s upper atmospheric temperatures, 1000 kilometers above the cloud tops. Jupiter is shown above a visible image for context. In this snapshot, the auroral region (near the north pole, in yellow/white) appears to have emitted a massive planetary-scale warming wave toward the equator. The feature is over 130,000 …

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Team identifies parent body materials in asteroid Ryugu

Team identifies parent body materials in asteroid Ryugu

A particle from asteroid Ryugu (dubbed C0009) helps identify materials from the space object’s parent body. Credit: A. Yamaguchi/NIPR An international team including a researcher from Lawrence Livermore National Laboratory (LLNL) has determined that a specific particle on asteroid Ryugu can shed light on the original unaltered materials of its parent body. In December 2014, …

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Einstein's theory of general relativity passes another test, with implications for dark matter and dark energy

Einstein’s theory of general relativity passes another test, with implications for dark matter and dark energy

The researchers used a satellite orbiting Earth to perform an ultra-precise test of a central premise of Einstein’s theory of general relativity, which is the modern theory of gravity. The question is whether two different types of mass – gravitational and inertial – are the same. Scientists found that two objects aboard the satellite fell …

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Conductance of giant magnon spin waves in ultra-thin insulators surprises researchers

Conductance of giant magnon spin waves in ultra-thin insulators surprises researchers

The current (I) through the injection electrode generates magnons in the YIG thin film. These flow to the sensor electrode, where they produce an electrical voltage (V). Credit: University of Groningen / Xiangyang Wei When you thin the conductor wires, their electrical resistance increases. It’s Ohm’s Law, and it’s generally true. An important exception is …

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Atomic-scale imaging reveals easy path to crystal formation

Atomic-scale imaging reveals easy path to crystal formation

Aluminum hydroxide, shown here in orange, undergoes fluctuations between structures before forming an ordered crystal. Credit: Nathan Johnson | Pacific Northwest National Laboratory What do clouds, televisions, pharmaceuticals and even the dirt under our feet have in common? They all have or use crystals in some way. Crystals are more than just fancy gemstones. Clouds …

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NASA is preparing to deflect the asteroid, in a key test of planetary defense

NASA is preparing to deflect the asteroid, in a key test of planetary defense

A man sits at his workstation within the Mission Operations Center for the Double Asteroid Redirection Test (DART) spacecraft, which is rapidly approaching its target. I bet the dinosaurs would have liked to think of that. On Monday, NASA will attempt a feat humanity has never accomplished before: deliberately ramming a spacecraft into an asteroid …

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