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World's strongest steady magnetic field generated in China


Scientists in China have set a new world record for the strongest steady magnetic field ever generated on Earth. The hybrid magnet managed to produce a field measuring 45.22 Tesla (T), which is over a million times stronger than the planet's own.

The record was set at the Steady High Magnetic Field Facility (SHMFF) in Hefei, China, using a magnet with a hybrid design that's been operating since 2016. The structure includes a resistive magnet sitting in a 32-mm (1.3-in) gap in the center of a superconducting magnet, allowing the two to join forces to produce an incredibly strong magnetic field.
 

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Australian dark matter detector joins the hunt with unique advantage


The first dark matter detector in the Southern Hemisphere has been officially opened. The Stawell Underground Physics Laboratory (SUPL) is built in a disused gold mine in Australia, and the aim is to use its unique position on the globe to finally pick up signals from the mysterious material thought to pervade the universe.

Decades of astronomical observations indicate that there's much more to the cosmos than meets the eye. Gravitational effects don't make sense based on the amount of mass from matter we can see, leading astrophysicists to infer that there's far more matter out there that we can't see. This so-called dark matter doesn't emit or interact with light, and rarely interacts with normal matter.
 

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Webb Telescope Shatters Distance Records, Challenges Astronomers


The very first results from the James Webb Space Telescope seem to indicate that massive, luminous galaxies had already formed within the first 250 million years after the Big Bang. If confirmed, this would seriously challenge current cosmological thinking. For now, however, that's still a big "if."

Shortly after NASA published Webb's first batch of scientific data, the astronomical preprint server arXiv was flooded with papers claiming the detection of galaxies that are so remote that their light took some 13.5 billion years to reach us. Many of these appear to be more massive than the standard cosmological model that describes the universe's composition and evolution.
 

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Sharpest image of most massive known star reveals its true size


R136a1 is a colossal star that lies about 160,000 light-years away from Earth, in the Tarantula Nebula of the Large Magellanic Cloud, a dwarf galaxy that orbits our own Milky Way. Previous observations have estimated its mass to be between 250 and 320 times that of the Sun, making it comfortably the most massive known star.
 

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Quantum entanglement record set with largest cluster of photons so far


The team started with a single rubidium atom, trapped in an optical cavity that bounces electromagnetic waves around in certain patterns. The atom is struck by a laser at a particular frequency, which prepares the atom to have a given property. Then another control pulse is beamed at it, which causes the atom to emit a photon that's entangled with the atom.

This process is repeated, with the atom rotated between each photon emission, until a whole chain of photons are produced that are all entangled with each other. The process is far more efficient than existing techniques, producing photons more than 43% of the time, or almost one photon for every two laser pulses.
 

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What Drives Galaxies? The Milky Way's Black Hole May Be the Key.


Over the past quarter century, astrophysicists have come to recognize what a tight-knit, dynamic relationship exists between many galaxies and the black holes at their centers. "There's been a really huge transition in the field," says Ramesh Narayan, a theoretical astrophysicist at Harvard University. "The surprise was that black holes are important as shapers and controllers of how galaxies evolve."
 

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MIT's Mars oxygen factory is now matching the output of a small tree


The lunchbox-sized Moxie, which standards for Mars Oxygen In-Situ Resource Utilization Experiment, traveled to Mars aboard the Perseverance rover in 2020. After touching down in the Jezero crater in February of 2021, the unit was soon put to work and around two months later produced its first oxygen, around 5.4 grams (0.2 oz) of the stuff.

Moxie does this by drawing in air from the planet's carbon-rich atmosphere, passing it through a filter to remove contaminants, compressing it and then heating it up. At this point, a solid oxide electrolyzer electrochemically splits the carbon dioxide into carbon monoxide and oxygen ions. These ions are then isolated and recombined to form molecular oxygen, or breathable O2.
 

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My how time (and satellites) fly... :cool:


Pioneer 11 swept past Saturn 43 years ago today


On today's date - September 1 - in the year 1979, NASA's plucky Pioneer 11 spacecraft became the first earthly craft ever to sweep past the ringed planet Saturn. Incredibly, the spacecraft came within 13,000 miles (21,000 km) of Saturn, crossing the plane of the planet's rings. In the process, Pioneer 11 found a new ring for Saturn - now called the "F" ring - and two new moons. In fact, the spacecraft almost smacked into one of these unknown moons, as it soared past.
 

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Engineers Solve Data Glitch on NASA's Voyager 1


Engineers have repaired an issue affecting data from NASA's Voyager 1 spacecraft. Earlier this year, the probe's attitude articulation and control system (AACS), which keeps Voyager 1's antenna pointed at Earth, began sending garbled information about its health and activities to mission controllers, despite operating normally. The rest of the probe also appeared healthy as it continued to gather and return science data.

The team has since located the source of the garbled information: The AACS had started sending the telemetry data through an onboard computer known to have stopped working years ago, and the computer corrupted the information.
 
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