Tag

Simulations

All articles tagged with #simulations

space1 month ago•2 min saved

Synthetic Cosmos Echoes Our Own in a Groundbreaking Computer Simulation

Astronomers have built COLIBRE, a large-volume synthetic universe that reproduces many properties of the real cosmos, including galaxy formation and dust/gas physics, by solving cosmological equations on the COSMA8 supercomputer over about 72 million CPU hours. The decade-long project supports the standard cosmological model by aligning with observations across eras, though it doesn't yet explain the JWST-detected “Little Red Dots” seen in the early universe.

via Futurism|

#colibre #cosmology #galaxy-formation

space1 month ago•74 min saved

Synthetic universe lets scientists hear galaxies' birth and growth across cosmic time

Scientists behind the COLIBRE project created synthetic universes that simulate galaxy formation from the first billion years after the Big Bang, modeling cold gas and dust physics on Durham’s COSMA8 supercomputer. The virtual galaxies reproduce many properties seen by the James Webb Space Telescope and reinforce the Lambda Cold Dark Matter cosmology, while also offering new audio-visual ways to explore cosmic evolution. The work, published in Monthly Notices of the Royal Astronomical Society, highlights progress and also ongoing mysteries JWST has revealed, such as enigmatic faint red dots that COLIBRE can’t yet explain.

via Space|

#colibre #cosmology #galaxy-formation

technology3 months ago•5 min saved

SpaceMolt: An AI-Only MMO Where Agents Play and Humans Watch

SpaceMolt is an experimental AI-only space MMO where autonomous AI agents connect to a server, select playstyles (mining, exploration, piracy, etc.), and evolve by mining ore, crafting items, and forming factions—while humans observe via logs and messages. Built with Claude Code to design, code, and auto-fix bugs, the current map hosts 51 agents across 505 star systems, illustrating a future where AI-driven gameplay unfolds largely without human input.

via Ars Technica|

#ai #autonomous-agents #mmo

space3 months ago•3 min saved

Local Group Hidden in a Vast Dark Matter Sheet, Study Suggests

A Nature Astronomy study proposes that the Milky Way and its Local Group are embedded in a gigantic flat sheet of dark matter, with mass concentrated at the sheet's edges and voids beyond. Using a simulated “virtual twin” of the group, the researchers show this geometry can explain peculiar motions that spherical halos can't, aligning local dynamics with the broader cosmological model and offering the first assessment of dark matter distribution in our neighborhood.

via Futurism|

#cosmology #dark-matter #galaxy-dynamics

science4 months ago•25 min saved

Ancient Greek Gear Puzzle: New Simulations Reframe the Antikythera Mechanism

New computer simulations and CT imaging suggest the Antikythera Mechanism may have jammed within months due to spacing errors and corrosion, implying reliability limits—not just precision—limited its long‑term ability to track lunar/solar cycles, with gear spacing mattering most and gear tooth shape playing a smaller role.

via Earth.com|

#ancient-technology #antikythera-mechanism #corrosion

space4 months ago•73 min saved

New simulations suggest Jupiter harbors 1.5 times the Sun’s oxygen

A detailed set of simulations modeling Jupiter’s interior atmosphere finds the gas giant contains about 1.5 times more oxygen than the Sun, likely due to Jupiter’s early accretion of icy material beyond the snow line. The models couple atmospheric chemistry with hydrodynamics, explaining why deep oxygen (mostly in water) is hidden from direct measurement and suggesting slower deep atmospheric circulation (gas movement taking weeks). The findings support formation scenarios for Jupiter and offer insight into the solar system’s history, with the study published Jan 8 in the Planetary Science Journal.

via Space|

#jupiter #oxygen #planetary-formation

science5 months ago•4 min saved

Revealing the Secrets of the Most Powerful Black Holes

Scientists have used the world's most powerful supercomputers to simulate the most powerful black hole ever modeled, revealing new insights into black hole behavior, including super-Eddington accretion, magnetic field effects, and radiation dynamics, challenging previous assumptions and aligning closely with observational data.

via Indian Defence Review|

#accretion-flows #black-holes #general-relativity

science7 months ago•4 min saved

Scientists Reveal New Secrets of Black Holes with James Webb Telescope

Scientists using advanced simulations have uncovered that magnetic reconnection, in addition to the known Blandford–Znajek mechanism, plays a significant role in extracting energy from the supermassive black hole M87* to power its massive jets, providing new insights into black hole physics and galaxy evolution.

via SciTechDaily|

#black-hole #jets #m87

science9 months ago•4 min saved

First Simulation of Shadow Realm at Black Hole's Edge

Scientists using supercomputer simulations, led by Andrew Chael, have modeled the environment around the supermassive black hole in M87, revealing new details about the plasma and magnetic fields near the event horizon, and showing that the black hole's shadow and photon ring can change over time due to chaotic plasma flows.

via ScienceAlert|

#black-hole #event-horizon-telescope #m87

science9 months ago•5 min saved

Simulations Uncover Unexpected Electron Temperatures Near M87 Black Hole

Supercomputer simulations of the environment around the M87 black hole reveal that electrons are much hotter than previously thought, challenging existing models and providing new insights into the plasma and magnetic fields near the event horizon, as researchers aim to better understand the black hole's complex surroundings.

via Phys.org|

#black-hole #electron-temperature #m87

science-and-technology10 months ago•3 min saved

NASA's Rover Failures Linked to Basic Physics Errors

NASA's recent rover failures may have been caused by a misjudgment in how lunar and Martian soil behaviors are modeled during testing, with new research suggesting that current Earth-based tests do not accurately account for the effects of low gravity on soil properties, potentially leading to overestimations of rover mobility and the need for more sophisticated physics-based simulations in future missions.

via The Daily Galaxy|

#nasa #planetary-exploration #rover-failure

science10 months ago•4 min saved

Potential Hidden Galaxies Surrounding the Milky Way Revealed by Simulations

Scientists using high-resolution dark matter simulations suggest there may be over 100 undiscovered satellite galaxies orbiting the Milky Way, which could soon be detected with advanced telescopes like the Vera Rubin Observatory, potentially supporting the standard cosmological model.

via Live Science|

#cosmology #dark-matter #galaxies

science11 months ago•4 min saved

James Webb Telescope's 'Rogue' Objects May Be Illusions, New Simulations Suggest

New simulations suggest that the mysterious 'rogue' pairs of Jupiter-sized objects, known as JuMBOs, observed by the James Webb Telescope in the Orion Nebula, are likely extremely rare or may not exist at all, casting doubt on their initial detection and challenging previous notions of their formation.

via Live Science|

#james-webb-telescope #jumbos #planet-formation

science11 months ago•4 min saved

James Webb Telescope's 'Rogue' Objects May Be Illusions, New Simulations Suggest

New simulations suggest that the mysterious 'rogue' pairs of Jupiter-sized objects, known as JuMBOs, observed by the James Webb Space Telescope are likely very rare or may not exist at all, casting doubt on their initial detection and challenging previous notions of their formation and stability.

via Yahoo|

#interstellar-objects #james-webb-telescope #jumbos

science11 months ago•2 min saved

Passing Star Threatens Earth's Orbit and Safety

Recent computer simulations suggest that a passing star could potentially cause significant gravitational disturbances in our solar system over the next four billion years, increasing the risk of planetary ejections or collisions, including a small but notable chance of Earth being involved in such an event.

via Yahoo|

#earth #passing-star #planetary-instability