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A new study debunks a recent claim that astronomers may have detected a lunar-mass primordial black hole. In a reanalysis of observations from the Dark Energy Camera (DECam), researchers found that the star nicknamed “Phoebe” was simply doing something ordinary that many stars do: changing its brightness naturally over time. The new findings have been reported in a paper posted to the arXiv preprint server on June 17.
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One year ago, on July 1, 2025, astronomers discovered a fascinating new object moving through the solar system. Detected by the Asteroid Terrestrial-impact Last Alert System (ATLAS), the object was quickly recognized as something special.
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NASA is racing to save an aging telescope from falling back to Earth with a daring rescue mission.
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Astronomers have uncovered new details about the black hole that ripped apart a star in a tidal disruption event named AT2024tvd. Findings suggest it is a wandering supermassive black hole—the kind that is not located at the center of a visible galaxy. The paper outlining this research was published in The Astrophysical Journal Letters on June 12.
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“Being around the Police Department as a little kid, I always looked at these guys like they were superheroes,” Casey Kloepfer said. “I always just wanted to be one one day.”
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Patrick found his 1-year-old brother, Liam, unresponsive in the pool, pulled him out, and alerted his mother and neighbors for help, according to the Johnson County Sheriff’s Office
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The world’s most powerful particle accelerator will shutter operations Monday for four years of renovations to dramatically boost its collision capacity and the potential for unlocking one of the greatest mysteries of the universe: dark matter.
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Using the Murchison Widefield Array (MWA), astronomers have discovered a new millisecond pulsar as part of the ongoing Southern-sky MWA Rapid Two-metre (SMART) survey. The discovery is reported in a research paper published June 17 on the arXiv preprint server. The work has also been accepted for publication in The Astrophysical Journal Letters.
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In quantum mechanics, the geometry of quantum states has emerged as a powerful framework for understanding phenomena ranging from electrical conductivity to superconductivity. One research direction aims to extend these geometric concepts to non-Hermitian quantum mechanics—where systems can exchange energy with their environment—including the generalization of the Berry phase, a key geometric quantity, to the non-Hermitian case.
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Over six hours, the man fired his gun no less than 24 times; one gunshot struck a cruiser where deputies were taking cover, and one struck an armored vehicle where a deputy was seated
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Scientists at Delft University of Technology, in collaboration with Waymo, have developed a new model that predicts with high accuracy how human drivers respond to dangerous traffic situations. For the first time, different types of collision avoidance behavior are combined into a single model. The results will be published on 10 June in Nature Communications. Waymo is already using the model to compare the performance of its autonomous vehicles with that of human drivers.
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The change to the police department legal fund, plus a trim to the fire department’s vehicle budget, will cover the estimated $1.4 million cost of the firefighter pay increases
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A large asteroid will zip past Earth this weekend, but don’t worry: It poses no danger.
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Uranus and Neptune remain two of the most mysterious objects in the solar system, primarily because they have been visited only by NASA’s Voyager 2 spacecraft in 1986 and 1989, respectively. Their “ice giant” moniker comes from longstanding hypotheses that their interiors are comprised of an icy mantle beneath their hydrogen-helium atmospheres. While Jupiter and Saturn are also composed primarily of hydrogen and helium, Uranus and Neptune are hypothesized to have a layered structure composed of icy elements in their interiors.
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The report found that with current staffing levels, about 80% of child abuse reports don’t get assigned to an investigator and the majority of property crimes also go uninvestigated
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