The suspect ignored commands to get out of the vehicle and accelerated, dragging a tethered patrol vehicle that hit a Phoenix PD officer and an Arizona DPS trooper
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The suspect ignored commands to get out of the vehicle and accelerated, dragging a tethered patrol vehicle that hit a Phoenix PD officer and an Arizona DPS trooper
The man first appeared to cooperate with a San Diego deputy before abruptly rolling up his window and reaching around the vehicle; he then grabbed a gun and fired a shot
Science in the modern era is increasingly reliant on enormous datasets and automated analysis. In astronomy, the Vera C. Rubin Observatory’s Legacy Survey of Space and Time (LSST)—a ten-year survey covering the entire southern sky almost a thousand times over the next decade—will test the limits of this reliance.
Apollo 11 first landed astronauts on the moon in 1969, but the journey to the lunar surface actually began 43 years before, in snowy Massachusetts.
It’s well known that spaceflight causes muscle atrophy and other biological changes in reduced gravity, and especially in near-zero gravity (microgravity) environments. However, the gravity threshold needed to maintain sufficient muscle health in space is still unclear.
Gamma-ray bursts are the most violent explosions in the universe. In a fraction of a second, they can release more energy than the sun will emit across its entire 10-billion-year lifetime. Most are over before you’ve had time to register them, gone in seconds, minutes at most. So when something arrived on 2 July 2025 that kept going for seven hours, fired three distinct bursts spread across an entire day, and then left behind an afterglow lasting months, astronomers knew immediately they were looking at something completely new.
The case reached the state’s high court after a federal appeals ruling questioned whether officers had probable cause in the arrest of a man watering his neighbor’s flowers
It seems improbable that a satellite designed to monitor polar ice sheets and floating sea ice could accurately measure a disturbance in Earth’s magnetic field. But that is just what ESA’s CryoSat mission did earlier this year. This is a story of unique innovation in satellite technology. At the end of last year, the CryoSat mission, which has been operating for almost 16 years, was given a remote upgrade of new software for its platform magnetometer. This instrument is installed on the satellite to ensure it orbits at the right altitude and directs its science instruments toward the right part of Earth’s surface. The platform magnetometer is therefore an operational instrument and was not designed to produce scientific data about Earth’s magnetic environment.
Using data from the Magellan Clay telescope and the Canada-France-Hawaii Telescope (CFHT), astronomers have investigated a galactic globular cluster known as NGC 5824. Results of the new study, available in a paper published March 5 on the arXiv pre-print server, suggest that the cluster is embedded in a dark matter halo.
The Royal Astronomical Society (RAS) is alarmed by the threat to ground-based astronomy posed by proposals put forward by Elon Musk’s SpaceX and Reflect Orbital. SpaceX has applied to launch one million satellites to act as data centers to power artificial intelligence, but brightness estimates show that thousands would be visible to the naked eye, many more than visible stars. On average, each image with the European Southern Observatory’s Very Large Telescope would lose 10% of data due to satellite trails.
Patches of the sun’s surface often show strong magnetic fields. These fields can emerge within a matter of hours, and can decay slowly or quickly, sometimes over days, weeks, or even months. Thanks to a new study about these long-lived active regions, we now know much more about the patches where these strong magnetic fields take at least a month to decay.
Heat shields are designed to protect the surface and cargo of a spacecraft as it enters an atmosphere. Aerospace engineers in The Grainger College of Engineering at the University of Illinois Urbana-Champaign recently observed a violently destructive difference in how heat shields function in atmospheres like Earth that contain oxygen versus nitrogen-rich atmospheres such as Venus and Titan, one of Saturn’s moons.
A study led by the University of Oxford has identified a new type of planet beyond our solar system—one that stores large amounts of sulfur deep within a permanent ocean of magma. The findings have been published in Nature Astronomy.
Electrons are tiny and constantly in motion. How they behave in a crystal lattice determines key material properties: electrical conductivity, magnetism, or novel quantum effects. Anyone aiming to develop the information technologies of tomorrow must understand what electrons do. At Forschungszentrum Jülich, a new tool is now available for this purpose: a momentum microscope that was fully developed and built on site. “Internationally, we are currently seeing rapidly growing interest in this method,” explains Dr. Christian Tusche from Forschungszentrum Jülich.
We’re starting to see just how exceptional our own solar system and its history is, as more exoplanets are discovered. A fourth exoplanet discovery in the LHS 1903 system made by ESA’s CHEOPS mission places a rocky world right where it shouldn’t be. This “inside-out system” could challenge our current understanding of planetary formation.
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