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Astronomers from the South African Astronomical Observatory (SAAO) and elsewhere have conducted photometric and spectroscopic observations of a cataclysmic variable system designated SRGA J115215.0−510656. Results of the new observations, published April 29 on the arXiv pre-print server, indicate that the investigated system is an unusual long-period dwarf nova.
Four humans recently looped around the moon. Their vessel, an Artemis capsule, was a thin metal shell whose life-support system kept them alive: it provided a carefully balanced atmosphere, a closed water loop, a finite supply of food, and a means for disposing of human waste. The life support was not optional. It was a necessity.
Astronomers using the NASA/ESA/CSA James Webb Space Telescope together with the NASA/ESA Hubble Space Telescope have looked deeply at thousands of young star clusters in four nearby galaxies, studying clusters at different stages of evolution. Their findings show that more massive star clusters emerge more quickly from the clouds they are born in, clearing away gas and filling the galaxy with ultraviolet light. The result gives us a better understanding of star formation in galaxies, as well as how and where planets can form.
The trooper was responding to reports of a wrong-way driver on Route 1 when the suspect vehicle struck his cruiser head-on
Surveillance and body camera video show the Oak Creek officer being forced onto the hood of his squad car as the suspect rapidly reversed from the scene
A new type of hologram technology has been developed that uses the motion of light as a key, revealing information only under specific conditions. This is gaining attention as a novel approach that can simultaneously overcome the limitations of existing optical communication and security technologies.
The administrative leave follows separate congressional and federal investigations into claims that D.C. crime reports were misclassified to lower reported crime rates
Officers made two calls for an ambulance before transporting the 22-year-old themselves during a medical emergency
Scientists have discovered the cause of a persistent glitch that continues to disrupt superconducting quantum computers, even when they have built-in defenses. For all their advanced hardware, superconducting quantum computers are vulnerable to errors caused by ionizing radiation from space or the environment. Radiation particles interfere with the chip substrate (the silicon base the processor is built on), which leads to the creation of rogue particles (quasiparticles) that disrupt the qubits, the basic units of quantum computers.
When solar storms strike Earth, they can disrupt power grids, rail systems, satellites, and even marine life. These effects arise because solar wind and geomagnetic activity disturb the magnetosphere–ionosphere system, generating electric and magnetic field variations that can resemble fainter signals from natural hazards. This risk is not theoretical.
Solar emissions exert ‘drag’ on space junk orbiting Earth. From historical measurements across a period of 36 years, researchers have now shown that space junk begins to fall down much faster once the sun’s activity across the solar cycle reaches approximately 67% of its peak. This result, which is expected to hold for station-keeping satellites too, is important for better planning of space missions that avoid collisions.
The new focus on manned missions to the moon and Mars presents countless pressing challenges, including keeping humans alive in hostile environments. What happens when an astronaut or space tourist has a cardiac emergency millions of miles from the nearest hospital?
A half century after NASA’s Apollo 17 lunar module lifted off the moon’s northeastern near side quadrant, planetary scientists still don’t completely understand when or how our moon first formed. They do agree that it involved a major impactor—an object dubbed Theia by lunar scientists—that likely struck Earth some 4.51 billion years ago. But the estimated size of Theia now ranges from a proto-Mercury-sized object all the way up to an object that was about half the size of present-day Earth.
A new model to predict how language changes over time has been developed by a statistical physicist at the University of Portsmouth. The model is a step towards understanding the “statistical physics of language,” a scientific theory which borrows ideas from the physics of interacting particles to explain how words, accents, and dialects spread, shift, and disappear across regions and generations, and how they might change in future. The research is published in the journal Physical Review E.
Customs and Border Protection stated that Sean M. McDonough, 48, was participating in water training with the marine unit when he suffered a medical episode
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