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Astronomers from the University of Manchester and the University of the Western Cape have directly detected an extremely faint radio signal from hydrogen gas billions of light-years away, opening a powerful new way to map the large-scale structure of the universe. Using South Africa’s MeerKAT radio telescope, the international team measured radio emissions from neutral hydrogen dating back to a time when the universe was several billion years younger than it is today.
Every second, tens of billions of neutrinos produced by nuclear fusion in the sun pass through every square centimeter of Earth—and through our bodies—almost without interacting. Although they are among the most abundant particles emitted by the sun, their extremely weak interactions make detecting these elusive particles one of the greatest experimental challenges in particle physics. A number of specialized neutrino detectors are in operation around the world, exploiting the unique properties of neutrinos to investigate astrophysical phenomena.
Former officer Clifford Proctor has been indicted again on a murder charge in the death of Brendon Glenn months after a judge dismissed an earlier indictment
Former officer Clifford Proctor has been indicted again on a murder charge in the death of Brendon Glenn months after a judge dismissed an earlier indictment
A new AI model can monitor satellites and spot anomalies in their behavior, reducing the risk of in-orbit collisions, according to new research published in the journal Expert Systems.
A research group in Japan has demonstrated a world-record 10-channel multiplexed quantum photonic interface based on an integrated waveguide array, a key technology for optically interconnecting multiple quantum computers. The study is published in the journal Optica.
For the better part of a century, people have been trying to understand dark matter. This invisible substance makes up roughly 85% of the mass in the universe but has never been directly detected. Determining exactly what it is remains one of the biggest questions about our world.
Physicists at the University of Graz (Austria), in collaboration with colleagues from Marburg University and Forschungszentrum Jülich (Germany), have achieved a scientific breakthrough. For the first time, the generation of electrical energy from light has been filmed and described theoretically.
Officers deployed TASERs in an effort to get the woman to drop the two knives she was holding; she threatened to kill officers before they fired shots
The Florida Department of Transportation is giving law enforcement agencies 30 days to remove license plate readers from all of the state roads it maintains
By combining roughly two decades of observations from NASA’s Swift X-ray Telescope with radio monitoring, astronomers have caught a supermassive black hole at the heart of the Perseus Cluster suddenly flaring in X-rays, and about 300 days later, its powerful radio emission flared too. Their paper describing the connection between this black hole’s accretion disk and the jets it launches was submitted to the arXiv preprint server on Aug. 13 and accepted for publication in the Astrophysical Journal Letters.
The universe has been having fewer and fewer stellar “babies.” Over the past 4.5 billion years, the rate of star birth has crashed to less than half of what it once was. But here’s the twist: the most essential “fuel” for making stars has barely decreased.
One of the central ideas in modern physics is the phase transition—a sudden transformation of the state of a material. We encounter phase transitions throughout everyday life: water freezes into ice, wax melts in the warmth of a flame, and water vapor condenses into droplets on a cold window. In these familiar examples, the atoms themselves rearrange into a new structure, giving the material entirely different properties.
Jupiter hosts more than 100 moons, with most attention focused on the four Galilean moons: Io, Europa, Ganymede and Callisto. This is primarily due to their active geology, including Io being the most volcanically active planetary body in the solar system and Europa having a vast subsurface liquid-water ocean beneath its icy crust. However, Jupiter’s smaller, lesser-known moons could provide astronomers with key insights into the history of the solar system because they have remained largely unchanged, unlike the Galilean moons.
While astronomers have found thousands of exoplanets over the last few decades, the true prize continues to elude them—they have yet to find an Earth-mass, rocky planet orbiting in the habitable zone of a sun-like star. That’s partially due to cosmic geography—around half of all sun-like stars near us aren’t alone. They have one or more companion stars that complicate their orbital dynamics, as well as those of any planets they might host.
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