Gamma-ray emission detected from the supernova remnant G272.2-3.2
Using NASA's Fermi Gamma-ray Space Telescope, Chinese astronomers have detected significant GeV gamma-ray emission from a supernova remnant (SNR) known as G272.2-3.2. The finding is detailed in a paper published March 29 on the arXiv pre-print reposi.....»»
Scientists find evidence of geothermal activity within icy dwarf planets
A team co-led by Southwest Research Institute found evidence for hydrothermal or metamorphic activity within the icy dwarf planets Eris and Makemake, located in the Kuiper Belt. Methane detected on their surfaces has the tell-tale signs of warm or ev.....»»
Chemists create an emission molecular thermometer
Future technologies rely on phenomena that were previously considered the exclusive domain of theoretical physics or chemistry. For example, the approach to devices with high-density information storage arose when chemists discovered single-molecule.....»»
Physicists detect elusive "Bragg glass" phase with machine learning tool
Cornell quantum researchers have detected an elusive phase of matter, called the Bragg glass phase, using large volumes of X-ray data and a new machine learning data analysis tool. The discovery settles a long-standing question of whether this almost.....»»
Chinese astronomers find radio pulsar in a supernova remnant
Using the Five-hundred-meter Aperture Spherical radio Telescope (FAST), astronomers from the Nanjing University in China and elsewhere, have detected a radio pulsar in a supernova remnant known as CTB 87. The finding is reported in a paper published.....»»
Researchers discover cosmic dust storms from Type 1a supernova
Cosmic dust—like dust on Earth—comprises groupings of molecules that have condensed and stuck together in a grain. But the exact nature of dust creation in the universe has long been a mystery. Now, however, an international team of astronomers f.....»»
Results from South Pole Telescope"s new camera emerge
For more than five years, scientists at the South Pole Telescope in Antarctica have been observing the sky with an upgraded camera. The extended gaze toward the cosmos is picking up remnant light from the universe's early formation. Now researchers h.....»»
Ghana: Kumasi city"s unplanned boom is destroying two rivers—sewage, heavy metals and chemical pollution detected
Ghana's urban population has more than tripled in the past three decades, from 4 million to nearly 14 million people. Competition for land in cities has increased among various land uses. These trends have led to encroachment in ecologically sensitiv.....»»
Natural gas flare samples collected by aircraft reveal high variation in nitrogen oxides emission estimates
Natural gas flaring, or burning, is commonly used in parts of the United States to dispose of the gas byproduct from oil extraction. The flare's combustion converts hydrocarbons to carbon dioxide and water, which lessens the climate impact and reduce.....»»
Advanced measurements unravel nanoscale phenomena in tungsten diselenide
Semiconductor 2D materials are a few atoms thick, and some of them exhibit localized emission, where light is emitted from such a small part of the layer that only one photon at a time is produced. This localized emission has unique properties and is.....»»
Gamma-ray bursts: Harvesting knowledge from the universe"s most powerful explosions
The most powerful events in the known universe—gamma-ray bursts (GRBs)—are short-lived outbursts of the highest-energy light. They can erupt with a quintillion (a 10 followed by 18 zeros) times the luminosity of our sun. Now thought to announce t.....»»
Extreme eruption on young sun-like star signals savage environment for developing exoplanets
Astronomers have detected an extreme eruption from a young star that became more than a hundred times brighter in only a few hours. This discovery offers new insight into how young sun-like stars behave early in their lives, and their impact on the d.....»»
Machine learning techniques enhance the discovery of excited nuclear levels in sulfur-38
Fixed numbers of protons and neutrons—the building blocks of nuclei—can rearrange themselves within a single nucleus. The products of this reshuffling include electromagnetic (gamma ray) transitions. These transitions connect excited energy level.....»»
Why interstellar objects like ‘Oumuamua and Borisov may hold clues to exoplanets
Two celestial interlopers in Solar System have scientists eagerly anticipating more. Enlarge / The first interstellar interloper detected passing through the Solar System, 1l/‘Oumuamua, came within 24 million miles of the Sun i.....»»
Betelgeuse before, during and after the Great Dimming
When a prominent star in the night sky suddenly dims, it generates a lot of interest. That's what happened with the red supergiant star Betelgeuse between November 2019 and May 2020. Betelgeuse will eventually explode as a supernova. Was the dimming.....»»
Medicinal drugs pollute the St. Lawrence River, presenting possible risk to aquatic organisms: Study
A new study shows troubling levels of pharmaceutical pollution in the St. Lawrence River and its largest tributaries, especially near and downstream of urban areas. Some of the compounds detected even pose a moderate-to-high risk to aquatic organisms.....»»
Researchers investigate the nature of a recently discovered very-high-energy source
Using XMM-Newton, Chandra and NuSTAR space telescopes, an international team of astronomers has explored the nature of a recently-detected very-high-energy source designated 2FHL J1745.1–3035. Results of the study, published Jan. 24 on the pre-prin.....»»
EV sales start to fall in California, an industry bellwether
Consecutive quarters of falling EV sales could derail state's zero-emission vehicle transition target......»»
Ford Pro selling 1,000 EVs to Ecolab for zero-emission Calif. fleet
Ecolab, a company that specializes in water treatment and purification, said it would buy more than 1,000 Mustang Mach-Es and F-150 Lightnings as it works toward electrifying its California fleet by next year......»»
Study predicts best times for Curiosity to sample Mars" methane
Since methane was first detected in Mars' atmosphere 20 years ago, scientists have struggled to uncover its origins and how it is transported around the Red Planet. Measurements from atmospheric samples collected by NASA's Curiosity rover at Gale cra.....»»
The emergence of JN.1 is an evolutionary "step change" in the COVID pandemic: Why this is significant
Since it was detected in August 2023, the JN.1 variant of COVID has spread widely. It has become dominant in Australia and around the world, driving the biggest COVID wave seen in many jurisdictions for at least the past year......»»