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Local droplet etching yields more symmetric quantum dots for integrated photonics

Light-based quantum technologies, such as quantum communication and photonic quantum computing, require reliable sources of individual photons and, ideally, pairs of entangled photons. Semiconductor quantum dots are promising candidates for this purpose. These nanostructures have electrical conductivity between that of insulators and conductors and are capable of confining electrons and holes. This property causes them to emit light at well-defined frequencies when excited by a laser.

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AI accelerates elucidation of nuclear forces with explosive neutron star data

A research team is using astrophysical explosions to understand the mysterious forces at work in some of the smallest building blocks in nature: atomic nuclei. In new research published in Nature Communications, the team uses machine learning and artificial intelligence to decipher the data from astrophysical observations to better understand how neutrons and protons interact in dense matter at the quantum level.

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Galactic islands of tranquility: ‘Little red dots’ may have brewed life’s building blocks

Astronomers have found that both the core of our Milky Way and the earliest proto-galaxies in the universe share a surprising trait: They are unusually calm and quiet in terms of harsh radiation. This tranquility is not just a cosmic curiosity; it may be essential for forming complex molecules that provide the ingredients of life.

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Webb spots details in nearby spiral galaxy NGC 5134

Two powerful instruments of the NASA/ESA/CSA James Webb Space Telescope joined forces to create this scenic galaxy view. This spiral galaxy is named NGC 5134, and it is located 65 million light-years away in the constellation Virgo. Though 65 million light-years may seem like a huge distance—the light that Webb collected to create this image has been journeying to us from NGC 5134 since soon after Tyrannosaurus rex went extinct—NGC 5134 is fairly close by as far as galaxies go. Because of the galaxy’s relative proximity, Webb can spot incredible details in its tightly wound spiral arms.

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NASA clears its Artemis moon rocket for an April launch with four astronauts following repairs

NASA cleared its moon rocket on Thursday for an April launch with four astronauts after completing the latest round of repairs.

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Armed suspect dead after vehicle ramming, gunfire at Mich. synagogue

FBI Director Kash Patel said agents are on scene of an “apparent vehicle ramming and active shooter situation” at Temple Israel synagogue in West Bloomfield Township

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Deep underground, a telescope may soon detect ghosts of stars that died before Earth existed

Imagine looking up at the night sky and seeing a star suddenly burst into a blaze of light brighter than anything nearby. A flash so bright that it briefly outshines an entire galaxy before fading forever.

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Asymmetric spin torque unlocks deterministic control of antiferromagnetic memory

A research team led by Prof. Shao Dingfu from the Hefei Institutes of Physical Science, Chinese Academy of Sciences, has proposed a universal mechanism that enables deterministic electrical control of collinear antiferromagnets—overcoming a long-standing bottleneck in antiferromagnetic spintronics. The study is published in Physical Review Letters.

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NASA’s tiny spacecraft sends first exoplanet images

With the first images from the spacecraft now in hand, the team behind NASA’s Star-Planet Activity Research CubeSat, or SPARCS, is ready to begin charting the energetic lives of the galaxy’s most common stars to help answer one of humanity’s most profound questions: Which distant worlds beyond our solar system might be habitable?

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‘Ionic liquids’ could redefine the habitable zone

“Follow the water” has been a guiding mantra of astrobiology, and even space exploration more generally, for decades. If you want to find life, it makes sense to look for the universal solvent that almost all types of life on Earth use. But what if life doesn’t actually need water to live or even evolve? A recent paper, available on the preprint server arXiv by researchers at MIT, including Dr. Sara Seager, and the University of Cardiff, proposes an alternative to water as the basis for life—ionic liquids (ILs) and deep eutectic solvents (DES).

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BWC: Suspect’s gun fires during struggle with Phoenix PD, injuring officer and fatally wounding suspect

Phoenix Police pursued the man and an officer tackled him to the ground after he pointed the gun at bystanders in a park

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NASA plans to have a permanent base on the moon by 2030: How it can be done

A US Senate committee has directed NASA to begin work on a moon base “as soon as is practicable.” Under legislation advanced by the Senate lawmakers, the outpost would serve as a science laboratory and proving ground, where astronauts would develop the capabilities to live and work beyond Earth’s orbit.

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Palm-sized superconducting magnet achieves 42 tesla, rivaling the world’s biggest

When we think of powerful magnets used in particle accelerators or for NMR (nuclear magnetic resonance), we often envision bulky machines, sometimes the size of buildings. But in an extraordinary breakthrough for physics, scientists at ETH Zurich have created magnets that are small enough to fit in the palm of your hand yet powerful enough to rival some of the world’s most powerful magnets.

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Astronomers discuss fortifying our planetary defenses

When people think of asteroids, they tend to picture rare, civilization-ending impacts like those depicted in movies such as “Armageddon.” In reality, the asteroids most likely to affect modern society are much smaller. While kilometer-scale impacts occur only every tens of millions of years, decameter-scale (building-sized) objects strike Earth far more frequently: roughly every couple decades. As astronomers develop new ways to detect and track these smaller asteroids, planetary defense becomes increasingly relevant for protecting the space-based infrastructure that underpins modern life, from GPS navigation to global communications.

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Old NASA science satellite plunges back to Earth

An old NASA science satellite plunged uncontrolled from orbit and reentered over the Pacific on Wednesday.

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