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James Webb Space Telescope

All articles tagged with #james webb space telescope

science11 days ago•7 min saved

Seven-Hour Gamma-Ray Burst Captured by Webb Defies Known Physics

Using the James Webb Space Telescope and a global network of observatories, scientists detected GRB 250702B, a gamma-ray burst that lasted about seven hours—the longest on record and far longer than typical bursts. The event, occurring in a dusty galaxy about 8 billion light-years away, could arise from an extreme gamma-ray burst, a tidal disruption event, or a black-hole–star merger, but a definitive explanation remains elusive. The multi-wavelength observations highlight extreme physics in stellar death and black-hole interactions and offer a rare window into such phenomena.

via ScienceDaily|

#astronomy #black-holes #gamma-ray-burst

science11 days ago•18 min saved

Saturn’s atmosphere revealed: Webb and Hubble unveil hidden motions under the clouds

Two space telescopes, Webb and Hubble, captured Saturn in complementary wavelengths— Webb's infrared reveals deep atmospheric structures like the 'ribbon wave' and remnants of the Great Springtime Storm, while Hubble shows visible bands and seasonal shifts. Together they let scientists slice Saturn's atmosphere layer by layer, study fast-moving winds and energy transport, and observe the enduring hexagon at the north pole as Saturn heads into winter.

via Earth.com|

#astronomy #hubble-space-telescope #james-webb-space-telescope

space12 days ago•95 min saved

Dual Space Telescopes Unveil Multilayer Portrait of Saturn's Turbulent Atmosphere

Two decades-spanning observations from JWST (infrared) and Hubble (visible) provide the most comprehensive, height-resolved view of Saturn to date, capturing the iconic north-polar hexagon and the infrared glow of its rings while revealing how Saturn’s winds and megastorms vary with altitude. The data help scientists understand the planet’s atmospheric dynamics and evolution, with the north pole about to enter 15 years of winter darkness, limiting future high‑resolution views until the 2040s.

via livescience.com|

#atmosphere #hexagon #hubble-space-telescope

science14 days ago•6 min saved

Saturn Revealed in High Definition by Hubble and Webb

NASA’s joint observations from the Hubble and James Webb Space Telescopes deliver the most detailed, multi-wavelength portrait of Saturn to date, revealing a layered atmosphere and intricate ring structures by combining visible and infrared data to visualize atmospheric layers, jet streams, and seasonal changes as Saturn approaches its 2025 equinox.

via The Daily Galaxy|

#hubble-space-telescope #james-webb-space-telescope #nasa

space15 days ago•74 min saved

Saturn Reimagined: Webb and Hubble Collaborate for a Multi-Wavelength Portrait

NASA released a new composite portrait of Saturn created by combining infrared data from the James Webb Space Telescope with visible/ultraviolet data from the Hubble Space Telescope, producing a layered, multi‑wavelength view that reveals Saturn’s atmospheric structure, jets, storms, potential auroral activity, and detailed ring features—showing how merging observations from multiple telescopes yields a fuller understanding of the planet’s dynamic climate and rings.

via Space|

#atmosphere #hubble-space-telescope #james-webb-space-telescope

science16 days ago•35 min saved

Webb and Hubble Spotlight Saturn in Infrared: Rings, Moons, and the Polar Hexagon

Webb’s infrared images of Saturn, paired with Hubble’s visible-light data, show bright rings, a multi-layer atmosphere, and weather patterns, plus moons Janus, Dione and Enceladus; Enceladus’s plumes hint at a subsurface ocean, while the iconic north-polar hexagon remains visible as Saturn heads toward its 2025 equinox, with sharper views anticipated into the 2040s.

via Yahoo|

#enceladus #hubble-space-telescope #james-webb-space-telescope

science16 days ago•3 min saved

Deuterium Signals in 3I/ATLAS Spur Fusion Talk, Not Alien Proof

New JWST analyses of the interstellar visitor 3I/ATLAS reveal unusually high deuterium in its gases, suggesting formation in extremely cold, metal-poor regions billions of years ago. Two Nature Astronomy papers argue the isotope pattern could be a natural relic rather than evidence of alien technology, while Avi Loeb questions the interpretation and notes deuterium as potential fusion fuel. Overall, the findings point to a natural origin and do not prove extraterrestrial engineering.

via Futurism|

#3iatlas #deuterium #fusion-fuel

science16 days ago•16 min saved

Webb and Hubble Team Up for a Layered Portrait of Saturn

NASA, ESA and CSA released new Saturn images from the James Webb Space Telescope and Hubble that reveal different atmospheric layers: Hubble’s visible-light photos show color bands and storms, while Webb’s infrared view highlights deep clouds, aerosols, and the rings’ ice; taken in Aug 2024 (Hubble) and a few months later (Webb), the pair helps scientists study Saturn’s atmosphere across depths and track seasonal changes as it moves toward the 2025 equinox, with future observations promising even clearer southern-hemisphere views.

via Engadget|

#hubble-space-telescope #infrared-imaging #james-webb-space-telescope

science16 days ago•7 min saved

Webb and Hubble Deliver a Multi-Layer Portrait of Saturn

NASA's James Webb Space Telescope (JWST) and the Hubble Space Telescope released complementary views of Saturn in infrared and visible light, revealing a dynamic atmosphere, bright rings, and several moons. The multi-wavelength approach lets scientists probe different atmospheric depths, effectively slicing Saturn's atmosphere by altitude. Webb highlights features like the long-lived northern ribbon wave and remnants of the Great Springtime Storm (2010–12), while Hubble shows color variations and ring shadows. Captured about 14 weeks apart in late 2024 as part of ongoing monitoring (including Cassini-era data and the OPAL program), the observations extend Saturn’s atmospheric record and demonstrate Webb’s infrared capabilities alongside Hubble’s view, in an international NASA/ESA/CSA collaboration.

via NASA Science (.gov)|

#hubble-space-telescope #james-webb-space-telescope #planetary-atmospheres

space20 days ago•8 min saved

Ancient lava world TOI-561 b cloaked in a surprising thick atmosphere

NASA’s James Webb Space Telescope detected signs of a relatively thick atmosphere around TOI-561 b, an ultra-hot, short-period rocky planet likely with a magma ocean. The planet’s dayside is cooler than a bare rock would be, indicating heat is redistributed by a volatile-rich atmosphere—potentially with water vapor and silicate clouds—challenging expectations that such extreme worlds would lose their atmospheres. The atmosphere may also help explain TOI-561 b’s lower-than-expected density, suggesting a recycling system between the magma ocean and the atmosphere and classifying the world as a “wet lava world.”

via ScienceDaily|

#astronomy #atmospheres #exoplanets

space24 days ago•5 min saved

Webb Captures Brain-Like Nebula Formed by a Dying Star

NASA's James Webb Space Telescope has captured infrared images of the PMR 1 nebula, nicknamed Exposed Cranium, surrounding a dying star and resembling a brain inside a transparent skull. Webb’s data reveal an outer hydrogen-rich shell and a darker central lane likely carved by material jets from the star, offering a rare look at a short-lived phase as the star sheds its layers before either becoming a white dwarf or ending in a supernova, depending on its mass.

via ScienceDaily|

#astronomy #dying-star #james-webb-space-telescope

astronomy25 days ago•54 min saved

JWST uncovers a sulfur-rich lava-ocean exoplanet, redefining planet types

Space-based and ground observations reveal L 98-59 d as a 1.6× Earth's size exoplanet with a global magma ocean and a sulfur-rich atmosphere likely dominated by hydrogen sulfide and sulfur dioxide, suggesting it formed from a larger sub-Neptune and cooled over billions of years. This lava-world represents a new class of planets and highlights the surprising diversity of worlds beyond our solar system.

via Space|

#astronomy #exoplanets #james-webb-space-telescope

science26 days ago•42 min saved

Webb Telescope Captures Light From a Spiral Galaxy Dating Back to the T. rex Era

The James Webb Space Telescope imaged spiral galaxy NGC 5134, about 65 million light-years away, using its mid-infrared and near-infrared instruments to reveal dusty star-forming regions and embedded star clusters. The collected light dates from roughly the time the Tyrannosaurus rex was alive, offering a detailed view of nearby galaxies to inform understanding of distant systems. The image suggests active galactic nucleus activity may be present and illustrates the ongoing gas-star formation cycle shaping galaxies, as part NASA/ESA/CSA’s program to study nearby star-forming galaxies across multiple wavelengths.

via Good News Network|

#astronomy #galaxies #james-webb-space-telescope

science28 days ago•4 min saved

Early-Universe Red Dots Hint at Overmassive Black Holes

JWST observations reveal numerous compact ‘little red dots’ in the early universe whose spectra show active galactic nucleus features, suggesting central black holes. Some dots, notably the Virgil Galaxy, appear normal in UV/optical light but harbor an exceptionally massive black hole detected in mid‑infrared, challenging current growth models. A leading idea—quasi-stars—posits black holes inside dense gas cocoons that could skew mass estimates. These findings could reshape how we understand black hole formation in the first billions of years and motivate deeper mid‑infrared surveys for more such objects.

via BBC Sky at Night Magazine|

#agn #early-universe #james-webb-space-telescope

space29 days ago•69 min saved

JWST Finds Interstellar Comet 3I/ATLAS May Be Among the Galaxy’s Oldest Objects

James Webb Space Telescope analysis of interstellar comet 3I/ATLAS suggests it formed in a cold region of the Milky Way about 10–12 billion years ago, potentially making it older than Earth and possibly as old as the galaxy or even the universe. Its isotopic composition differs from solar-system comets, implying formation in a different stellar environment. The comet is now exiting the solar system after a close approach to Earth, with further travels past the outer planets as researchers continue to refine its origins.

via Live Science|

#3iatlas #interstellar-comet #isotopes