Tag

Cosmic Web

All articles tagged with #cosmic web

science1 day ago•8 min saved

Porphyrion’s 23-Million-Light-Year Jet Rewrites Galactic Scale

Astronomers using LOFAR have identified Porphyrion, a radio galaxy whose jets span about 23 million light-years (7 Mpc)—roughly 140 Milky Ways end-to-end—making it one of the largest known galactic-origin structures. The colossal jets suggest prolonged black-hole feeding over ~1 billion years and may influence the cosmic web’s temperature and magnetic fields, though newer discoveries like TXS 0033+252 have since surpassed its size, hinting that even bigger jets await detection.

via ScienceAlert|

#cosmic-web #galactic-jets #lofar

science4 days ago•51 min saved

James Webb maps the cosmic web in unprecedented detail, tracing galaxy growth across 13 billion years

Using JWST’s COSMOS-Web survey, astronomers have produced the most detailed map of the cosmic web to date, showing how galaxies formed and moved within dense filaments over roughly 13 billion years. The 255-hour survey catalogs about 164,000 galaxies and reveals that dense regions boosted early galaxy growth, while in the later universe environmental effects and massive dark-matter halos quenched star formation, clarifying how the universe’s large‑scale skeleton shaped galaxy evolution.

via Yahoo|

#cosmic-web #cosmos-web #galaxy-formation

astronomy5 days ago•89 min saved

JWST maps the cosmos with its largest, most detailed 3D survey

Using the COSMOS-Web program, the James Webb Space Telescope has produced the largest-ever 3D map of the universe, charting about 164,000 galaxies over a 255-hour survey to reveal the cosmic web’s skeleton from the present back to when the universe was under 1 billion years old. The map shows dense regions fostering early galaxy growth and, later, environmental quenching in massive galaxies—likely driven by massive dark matter halos and feedback from supermassive black holes—providing new insight into how the large-scale structure of the cosmos evolved. The COSMOS-Web galaxy catalog is publicly available for researchers.

via Live Science|

#astronomy #cosmic-web #cosmos-web

space5 days ago•6 min saved

Cosmic Web Persists Across Vast Scales, Challenging Uniformity

A Nature study analyzing 47 million galaxies from the DESI survey finds coherent patterns in the cosmic web extending across billions of light-years, suggesting the universe may not be perfectly homogeneous or isotropic on the largest scales. The result challenges a key cosmological assumption and could prompt revisions to models of dark matter, gravity, and structure formation, though independent replication with larger datasets is needed before firm conclusions.

via WIRED|

#astronomy #cosmic-web #cosmology

science1 month ago•4 min saved

Cosmic Web Unveiled: JWST Maps the Early Universe in Unprecedented Detail

Researchers using JWST data from the COSMOS-Web program produced the most detailed map of the cosmic web to date, tracing galaxies and filamentary structures back to about 1 billion years after the Big Bang, revealing finer details than previous Hubble maps and releasing the 164,000-galaxy catalog and an interactive cosmic-evolution visualization to the public.

via Universe Today|

#cosmic-web #cosmos-web #dark-matter

space1 month ago•11 min saved

The Boötes Void: a colossal cosmic gap that tests our picture of the universe

The Boötes Void is a roughly 330‑million‑light‑year‑wide region in the direction of the Boötes constellation that is almost empty but not a true vacuum, centered about 700 million light‑years from Earth. Identified in the 1980s, it contains about 60 galaxies—far fewer than the ~2,000 expected if it had average density—likely formed by merging smaller voids in the cosmic web. While unusually large, voids are expected in the standard cosmological model and offer clean laboratories for studying galaxy formation and cosmology. A famous thought experiment by Greg Aldering suggests that if the Milky Way were at the void’s center, we might not have known there were other galaxies until the 1960s, underscoring the scale of observational limits at such distances.

via Space Daily|

#astronomy #bootes-void #cosmic-web

astronomy1 month ago•59 min saved

James Webb uncovers the universe's largest, most detailed map of the cosmic web

Using JWST’s COSMOS-Web survey, astronomers mapped about 164,000 galaxies over a 255‑hour program to produce the largest, most detailed view of the cosmic web. The map shows how dense regions foster early galaxy growth and eventually quench star formation, revealing the large-scale structure of the universe up to redshift z~7 and refining our understanding of cosmic evolution since the universe’s infancy.

via Live Science|

#astronomy #cosmic-web #cosmos-web

astronomy1 month ago•6 min saved

Cosmic Web in Sharp Focus: Direct Picture Maps the Universe’s Hidden Gas Highways

Astronomers using the VLT's MUSE instrument captured the clearest image yet of a cosmic filament—about 3 million light-years long—connecting two actively forming galaxies when the universe was ~2 billion years old. The direct detection of faint intergalactic gas, traveling roughly 12 billion years to Earth, aligns with simulations and offers new insight into how gas flows through the cosmic web to fuel galaxy growth and star formation.

via ScienceDaily|

#astronomy #cosmic-web #dark-matter

science1 month ago•72 min saved

JWST reveals the cosmic web in record-detail map

Using the James Webb Space Telescope, COSMOS-Web maps the universe’s cosmic web—the largest-scale structure—back to about 1 billion years after the Big Bang, delivering deeper, higher-resolution views than Hubble and enabling study of galaxy evolution in filaments and clusters across cosmic time.

via Space|

#cosmic-web #cosmos-web #galaxies

space1 month ago•8 min saved

JWST Maps the Cosmic Web in Unprecedented Detail

Using NASA’s James Webb Space Telescope data from the COSMOS-Web survey—the telescope’s largest General Observer program—astronomers have created the most detailed map of the cosmic web to date, tracing the network of galaxies across 13.7 billion years of cosmic history back to when the universe was about 1 billion years old. The improvement comes from JWST’s deep infrared observations and precise galaxy distances, revealing filamentary structures that earlier maps smoothed over. The team is releasing the large-scale structure maps, a catalog of about 164,000 galaxies, and a video publicly for broader study of galaxy formation and cosmic evolution.

via futurity.org|

#astronomy #cosmic-web #cosmos-web

science2 months ago•7 min saved

JWST Maps the Cosmic Web in Unprecedented Detail Across Cosmic Time

Using the James Webb Space Telescope’s COSMOS-Web survey, researchers produced the sharpest map yet of the universe’s cosmic web by charting about 164,000 galaxies, tracing large-scale structures back to when the universe was roughly 1 billion years old. The map reveals dense filaments and voids and will help study how galaxies evolve within this cosmic skeleton; the data are publicly released for wider use.

via ScienceDaily|

#cosmic-web #cosmos-web #galaxies

science2 months ago•37 min saved

Desi's 47 Million Galaxy Map Reveals the Cosmic Web and Dark Energy’s History

The Dark Energy Spectroscopic Instrument (DESI) at Kitt Peak National Observatory has produced the largest 3D map of the universe, charting about 47 million galaxies and more than 20 million Milky Way stars over a five-year survey. The map uncovers the cosmic web of filaments and voids and enables researchers to track how dark energy has shaped the universe’s expansion over the last 11 billion years, with DESI continuing observations through 2028 to expand the dataset and first full results anticipated in 2027.

via Yahoo|

#cosmic-web #dark-energy #desi

science4 months ago•3 min saved

MOTHRA: a 1,140-lens telescope to map the cosmic web and dark matter

Researchers are building MOTHRA in Chile using 1,140 Canon EF 400mm f/2.8L IS lenses across 30 mounts to form a 4.7-meter-equivalent aperture. The project, expanding on the Dragonfly concept, pairs each lens with Apx26/60 cameras (Sony IMX571/IMX455 sensors) to image diffuse ionized gas that traces the cosmic web and dark matter. Construction is underway at El Sauce Observatory with completion targeted by year’s end, funded by Alex Gerko of XTX Markets. The goal is to directly image the unseen mass connecting galaxies, an ambitious step beyond traditional starlight observations.

via PetaPixel|

#canon-lenses #cosmic-web #dark-matter

innovation4 months ago•11 min saved

MOTHRA sprint starts: 1,140 lenses to map the cosmic web

Construction has begun on MOTHRA, the world’s largest all-lens telescope, which uses 1,140 Canon telephoto lenses as a distributed aperture to detect faint hydrogen gas linking galaxies and map the cosmic web, revealing the distribution of dark matter. Built at the El Sauce Observatory in Chile, it aims to begin scientific observations by the end of 2026, funded by Alex Gerko and Convergent Research as part of the Dragonfly FRO initiative.

via Interesting Engineering|

#cosmic-web #dark-matter #dragonfly-fro

astronomy4 months ago•54 min saved

Cosmic web revealed: 3D map shows hidden sea of light in early universe

Space researchers used the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) to produce the largest 3D map of Lyman-alpha light from hydrogen dating to 9–11 billion years ago, exposing a vast “sea of light” between galaxies and outlining the cosmic web. By applying Line Intensity Mapping to thousands of spectra, the team mapped faint hydrogen gas beyond bright galaxies, shedding light on how gas accreted, galaxies formed, and the large-scale structure of the early universe.

via Space|

#astronomy #cosmic-web #early-universe