Webb Makes Most Detailed View of Cosmic Web

🌌 Most detailed cosmic web ever mapped

🕳️ New method to detect dark matter

🌀 One star reshapes entire galaxy

☄️ X-ray secrets of a cool core cluster

🖥️ NASA tests next-gen space processor

UC Riverside astronomers led by graduate student Hossein Hatamnia used JWST (James Webb Space Telescope) data to produce the most detailed cosmic web map ever created, tracing galaxy networks across cosmic history.

The COSMOS-Web survey, JWST's largest General Observer program, cataloged 164,000 galaxies spanning 13.7 billion years of cosmic evolution, covering sky area equivalent to three full Moons with unprecedented infrared depth and resolution.

Mobasher notes the map reveals structures invisible to Hubble, with details previously smoothed away now clearly visible, enabling study of galaxy evolution in filamentary structures back to when the universe was one billion years old.

MIT postdoc Josu Aurrekoetxea and European collaborators developed a method predicting gravitational wave signatures from black holes merging through dense dark matter regions rather than empty space, enabling new detection approaches.

The team analyzed 28 gravitational wave signals from LIGO-Virgo-KAGRA's first three observing runs, finding GW190728 showed possible dark matter imprint consistent with a 20-solar-mass black hole binary merger through dark matter clouds.

Aurrekoetxea cautions statistical significance remains insufficient for detection claims, but emphasizes that without such waveform models, mergers in dark matter environments could be systematically misclassified as occurring in vacuum.

Leiden Observatory researchers Tetsuro Asano and Simon Portegies Zwart simulated hundreds of Milky Way-like galaxies, discovering that shifting a single star's position produces dramatically different spiral arm and bar structures over time.

Their simulations varied gravitational softening parameters systematically, revealing the Milky Way becomes unpredictable after one million years—extremely short compared to its ten-billion-year age, equivalent to one second in human lifetime.

Portegies Zwart explains this resolves the paradox of galaxies behaving both smoothly and chaotically simultaneously, quantifying how simulation choices determine observable chaos while maintaining recognizable spiral galaxy characteristics throughout.

Boston University's Courtney Watson and collaborators at Harvard-Smithsonian Center for Astrophysics analyzed 485 kiloseconds of Chandra X-ray observations of galaxy cluster A2029, previously considered one of the universe's most relaxed clusters.

Deep imaging revealed a sloshing spiral extending nearly 600 kiloparsecs from the cluster core, plus a potential merger shock at 656 kiloparsecs with Mach number 1.12 and cooler gas "splash" feature trailing behind infalling subcluster.

Comparison with simulations suggests A2029 experienced a 1:10 mass-ratio off-axis merger approximately four billion years ago, demonstrating that even apparently relaxed clusters hide rich dynamical histories beneath their smooth appearances.

NASA JPL engineers led by project manager Jim Butler began testing the High Performance Spaceflight Computing processor in February, developed through commercial partnership with Microchip Technology Inc. for next-generation autonomous spacecraft operations.

The radiation-hardened system-on-a-chip demonstrated 500 times current spaceflight processor performance during testing, designed to provide 100 times computational capacity while surviving electromagnetic radiation, extreme temperatures, and high-energy particle bombardment.

Butler states the processor will enable real-time AI decision-making for autonomous spacecraft, support crewed Moon and Mars missions, and accelerate scientific discovery through faster onboard data analysis where human input delays are impractical.