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A century-old stellar mystery may finally have an explanation

For more than a century, astronomers have puzzled over a strange discrepancy in the historical record. Theta Eridani, a modest star in the constellation Eridanus, is the third-brightest star in its constellation, with a magnitude of 2.9. But ancient astronomers described it very differently. A new study, posted to the arXiv preprint server on June 29, has proposed a plausible explanation for this mystery.

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Four new K-9 teams join Calif. sheriff’s office after months of training

Meet new Placer County Sheriff’s Office K-9s Ulfr, Dax, Archer and Jimmy

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When a police officer is shot, how they get to the hospital depends on the city – and Philadelphia stands apart

What do police do after one of their own has been shot?

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Observations investigate the nature of a peculiar supernova

An international team of astronomers has performed follow-up observations of a peculiar Type Ia supernova designated SN 2023vjh. Results of the observational campaign, published July 9 on the preprint server arXiv, deliver important insights into the nature of this explosion.

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Image: The growing crescent of Mars as NASA’s psyche mission approaches

This composite of images taken by NASA’s Psyche mission shows the crescent of Mars grow as the spacecraft approached the planet for a gravity assist from May 2 to May 15, 2026.

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NASA’s Psyche mission delivers Mars flyby data, time-lapse video

The spacecraft aced its encounter with Mars. Now, mission scientists are studying a trove of data from the flyby in preparation for its arrival at asteroid Psyche in 2029.

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How quantum circuits based on neutral atoms could find and fix errors

Quantum computers, devices that process information by leveraging the laws of quantum mechanics, have been found to outperform classical computers in some advanced tasks. Instead of storing information in the form of classical binary bits (i.e., 0 or 1), quantum computers rely on quantum bits (i.e., qubits), which can also exist in combinations of 0 and 1 states.

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India successfully launches first private orbital rocket

India’s first privately built orbital rocket took its maiden flight Saturday, its company said, marking a significant step for the South Asian giant as it eyes a bigger slice of the global space economy.

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How physics and mathematical modeling help us make better clothes

A new paper in the journal Nature Physics offers insights into the physics of liquid droplets—and while many people may not appreciate the mathematical accomplishment, they will benefit from the athletic wear and raincoats it makes possible. The recent article, “Tricky Tension,” explores the intersection of physics and textiles and how wetting is influenced by the structure of tiny individual liquid droplets.

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BWC: Woman calls 911 over ‘heart attack,’ threatens officers with knife before OIS

Lacy Township officers spoke to the woman for at least 30 minutes as she refused to come out of the home or let officers in

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AI unlocks QLED recipe that doubles efficiency and boosts lifetime 40-fold

A technology has been developed that allows artificial intelligence to inversely determine the process conditions for quantum-dot light-emitting diode (QLED) devices—conditions that previously required extensive trial and error to identify.

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Far above the Earth, NASA’s Apollo lunar lander put astronauts on the moon

America’s most daring, extraordinary feat—landing astronauts on the moon—remains the pinnacle of achievement by anyone anywhere. Ever.

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FCC approves first launch for space reflector constellation

Reflect Orbital moves ahead with the company’s first Eärendil launch amid concerns from the astronomical community.

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How Gravity from Entropy theory connects the second law of thermodynamics with the emergence of cosmic structure

A new study by Queen Mary University of London mathematician Professor Ginestra Bianconi proposes a new perspective on one of the deepest questions in modern physics: How can the universe become increasingly structured and complex while still obeying the second law of thermodynamics?

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New optical chip design controls light speed in real time, simulations suggest

Seoul National University College of Engineering announced that a joint research team led by Professor Namkyoo Park and Professor Sunkyu Yu of the Department of Electrical and Computer Engineering at SNU, in collaboration with Professor Xianji Piao of the School of Electrical and Computer Engineering at the University of Seoul, has developed a photonic integrated circuit that can slow light on demand.

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