Ionic Liquids' Good Vibrations Change Laser Colors with Ease
Scientists have found a variety of ways to convert one color of laser light into another. In a study just published in the journal Physical Review Applied, scientists at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory demonstrate a new color-shifting strategy that's simple, efficient, and highly customizable.
Stellar initial mass function varies with metallicity and age of stars
In the vast and diverse Universe, the initial mass distribution at the birth of a new population of stars determines the fate of galaxies.
Can you trust your quantum simulator?
At the scale of individual atoms, physics gets weird. Researchers are working to reveal, harness, and control these strange quantum effects using quantum analog simulators -- laboratory experiments that involve super-cooling tens to hundreds of atoms and probing them with finely tuned lasers and magnets.
Researchers uncover secrets on how Alaska's Denali Fault formed
When the rigid plates that make up the Earth's lithosphere brush against one another, they often form visible boundaries, known as faults, on the planet's surface. Strike-slip faults, such as the San Andreas Fault in California or the Denali Fault in Alaska, are among the most well-known and capable of seriously powerful seismic activity.
Billions of Celestial Objects Revealed in Gargantuan Survey of the Milky Way
Astronomers have released a gargantuan survey of the galactic plane of the Milky Way. The new dataset contains a staggering 3.32 billion celestial objects -- arguably the largest such catalog so far. The data for this unprecedented survey were taken with the Dark Energy Camera, built by the US Department of Energy, at the NSF's Cerro Tololo Inter-American Observatory in Chile, a Program of NOIRLab.
Argonne announces 2022 Postdoctoral Performance Awards
Nine postdoctoral appointees were recognized with Postdoctoral Performance Awards.
Breakthrough PPPL confirmation of key theory behind the formation of planets, stars and supermassive black holes
The first laboratory realization of the long-standing but never-before confirmed theory of the puzzling formation of planets, stars and supermassive black holes by swirling surrounding matter has been produced at the Princeton Plasma Physics Laboratory.
Baseline 14-- Central Development Laboratory: The Magic Behind the Wonder
Radio telescopes are powerful tools that allow astronomers to study the Universe. We often read about the discoveries they make, but we rarely get a glimpse of the engineers and technicians that design and build these telescopes. Join our host Summer Ash as she talks about NRAO's Central Development Laboratory (CDL) and how CDL helps make modern radio astronomy a reality.
Revealing the Thermal Heat Dance of Magnetic Domains
A collaboration led by scientists from the U.S. Department of Energy's Brookhaven National Laboratory, Helmholtz-Zentrum Berlin (HZB), the Massachusetts Institute of Technology (MIT), and the Max Born Institute (MBI) published a study in Nature in which they used a novel analysis technique--called coherent correlation imaging (CCI)--to image the evolution of magnetic domains in time and space without any previous knowledge. The scientists could not see the "dance of the domains" during the measurement but only afterward, when they used the recorded data to "rewind the tape."
Data Reveal a Surprising Preference in Particle Spin Alignment
Given the choice of three different "spin" orientations, certain particles emerging from collisions at the Relativistic Heavy Ion Collider (RHIC), an atom smasher at Brookhaven National Laboratory, appear to have a preference. Recent results reveal a preference in global spin alignment of particles called phi mesons.
The Mechanism Of Cosmic Magnetic Fields Explored in the Laboratory
Recent research shows that magnetic fields can spontaneously emerge in a plasma if the plasma has a temperature anisotropy. This mechanism is known as the Weibel instability. This new research is the first to unambiguously observe the Weibel instability in the laboratory. It offers a possible solution to the problem of the origin of the microgauss-level magnetic fields that permeate the galaxies.
Leonardo da Vinci's paradox cracked
Prof. Miguel Angel Herrada, from the University of Seville, and Prof. Jens G. Eggers, from the University of Bristol, have discovered a mechanism to explain the unstable movement of bubbles rising in water.
How to Shelter from a Nuclear Explosion
In Physics of Fluids, researchers simulate an atomic bomb explosion from a typical intercontinental ballistic missile and the resulting blast wave to see how it would affect people sheltering indoors.
Martian meteorite contains large diversity of organic compounds
The Martian meteorite Tissint contains a huge diversity of organic compounds, found an international team of researchers led by Technical University of Munich and Helmholtz Munich's Philippe Schmitt-Kopplin and including Carnegie's Andrew Steele.
Hubble Finds Hungry Black Hole Twisting Captured Star Into Donut Shape
Astronomers using Hubble have recorded a star getting swallowed by a giant black hole. Hubble didn't observe the mayhem directly, but captured spectral fingerprints that provide clues as to how a star gets shredded as it is devoured.
Tokamak Experiments Provide Unique Data for Validating Spacecraft Heat Shield Ablation Models
When a spacecraft enters a thick atmosphere at a high velocity, it rapidly compresses the gas in front of it, creating a hot, dense plasma. To protect against damage, spacecraft are typically covered by a heat shield material. Scientists for the first time used a tokamak to study what happens to these materials in a hot plasma. The research creates a path to improving heat shield materials for future planetary exploration.
Scientists explain why card games are so addictive
A jerk is a physical quantity that represents a sudden change of acceleration. It is widely used as a parameter in engineering, manufacturing, sports science, and other industries.
How did the Butterfly Nebula get its wings? It's complicated
Something is amiss in the Butterfly Nebula. When astronomers compared images from 2009 & 2020, they saw dramatic changes in its "wings." Powerful winds are driving complex alterations of nebular material. It's unknown how such activity is possible in what should be a "largely moribund star with no remaining fuel."
Cells using finger-like structures within existing tissues
Integration is not only a problem of social significance among humans, but also an issue for the cells that form us as humans.
The Latest From The American Astronomical Society Meeting And Other Space News
Below are some of the latest articles that have been added to the Space and Astronomy channel on Newswise, a free source for journalists.
Old and new stars paint very different pictures of the Triangulum Galaxy
Scientists have discovered something unexpected about the Triangulum galaxy: In this satellite galaxy, a close companion of the much larger Andromeda galaxy, old and new stars occur in separate parts of the its structure, something not seen in galaxies like our own and so far not reporter for other satellite galaxies.
NASA's Webb Uncovers Star Formation in Cluster's Dusty Ribbons
By peering into a well-known star cluster within the Small Magellanic Cloud, Webb's NIRCam instrument has revealed many new pockets of star formation that have never been seen. Further, new structures appear in this image that provide a window into the stars feeding within.
Cosmic Superbubble's Magnetic Field Charted in 3D for the First Time
A new strategy for tracing magnetized structures in 3D will help address key questions about the influence of magnetic fields in the cosmos.
The optical fiber that keeps data safe even after being twisted or bent
Optical fibres are the backbone of our modern information networks. From long-range communication over the internet to high-speed information transfer within data centres and stock exchanges, optical fibre remains critical in our globalised world.
The seven-year photobomb: Distant star's dimming was likely a 'dusty' companion getting in the way, astronomers say
Astronomers discovered that the star Gaia17bpp gradually brightened over a 2 1/2-year period. But follow-up analyses revealed that the star itself wasn't changing. Instead, it's likely part of a rare type of binary system. Its apparent brightening was the end of a years-long eclipse by an unusual, "dusty" stellar companion.