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Wasp 121b

All articles tagged with #wasp 121b

space11 days ago•10 min saved

Webb detects two-faced WASP-121b: scorching dusk and cloudy dawn

JWST mapped WASP-121b’s atmosphere longitude by longitude during a single transit as the planet rotated, revealing a hotter, expanded evening limb with water dissociation and a cooler morning limb possibly hosting silicate clouds; this rotational‑transit effect shows strong day–night circulation on this ultra-hot Jupiter (dayside ~2770 K, nightside ~1000 K) and highlights how limb-averaged spectra can miss key chemistry and cloud features.

via Space Daily|

#atmospheric-circulation #clouds #exoplanets

space1 month ago•96 min saved

JWST finds ruby-and-sapphire rain on ultrahot exoplanet WASP-121b

NASA’s James Webb Space Telescope tracked WASP-121b’s atmosphere as it orbits extremely close to its star, revealing a strong day–night contrast: the evening limb is hotter and shows different spectral features than the morning limb, consistent with powerful winds moving heat from the blistering dayside to the cooler nightside. Changes in water vapor and carbon monoxide signals across the planet’s atmosphere indicate temperature differences, with the evening side hot enough to dissociate water and the morning side possibly clouded by silicates. The extreme climate—where molten metals and even condensates that could resemble rubies and sapphires might “rain” on the nightside—follows prior hints of magnesium and iron escaping from the atmosphere. The team notes JWST-style spectroscopy could be applied to other ultra-hot exoplanets, and the study appeared in Nature Astronomy on June 10.

via Space|

#exoplanet-atmosphere #exoplanets #james-webb-space-telescope

science7 months ago•4 min saved

James Webb Telescope Detects Double Helium Tails and Extreme Weather on Distant Exoplanets

The James Webb Space Telescope observed the exoplanet WASP-121b, also known as Tylos, for nearly 37 hours, revealing the first-ever continuous observation of atmospheric escape with two enormous helium tails stretching over half its orbit, providing new insights into planetary evolution and atmospheric dynamics.

via ScienceAlert|

#atmospheric-escape #exoplanet #helium-tails

science1 year ago•4 min saved

Webb Telescope Uncovers Fiery and Extreme Origins of Distant Exoplanets

NASA's James Webb Space Telescope has studied the extreme exoplanet WASP-121b, revealing its fiery origins, atmospheric composition, and the presence of molecules like silicon monoxide and methane, which provide insights into its formation and evolution in a harsh, close-in orbit around a hot star.

via Space|

#atmospheric-chemistry #exoplanet #hot-planets

science1 year ago•3 min saved

James Webb Unveils New Molecule and Insights in Exoplanet Atmospheres

NASA's James Webb Space Telescope has detected silicon monoxide in the atmosphere of the ultrahot exoplanet WASP-121b, marking the first such discovery and revealing complex atmospheric dynamics, including unexpected methane presence on the planet's cooler nightside, due to vertical mixing and extreme temperatures.

via The Daily Galaxy|

#atmospheric-chemistry #exoplanet #james-webb-space-telescope

science1 year ago•4 min saved

From Pebbles to Planets: Unveiling the Origins of Extreme Worlds

Scientists using JWST discovered vaporized rock molecules in the atmosphere of the exoplanet Tylos (WASP-121b), revealing insights into its formation from dust and pebbles, and uncovering unexpected atmospheric processes like vertical methane mixing, which challenge current models of hot Jupiter evolution.

via ScienceAlert|

#atmosphere #exoplanet #jwst

science1 year ago•2 min saved

Space Pebbles and Atmospheric Insights Reveal Exoplanet Formation and Composition

Scientists using the JWST have studied the ultra-hot exoplanet WASP-121b, discovering water, carbon monoxide, silicon monoxide, and methane in its atmosphere, providing insights into its formation involving space pebbles and rocky bombardments, and marking the first detection of SiO in a planetary atmosphere.

via Phys.org|

#atmosphere #exoplanet #james-webb-space-telescope

science-and-technology2 years ago•0 min saved

"Hubble Reveals Turbulent Weather with Massive Cyclones on Exoplanet WASP-121 b"

The European Space Agency (ESA) has captured images of "massive cyclones" on the exoplanet WASP-121 b, also known as Tylos, using a NASA/ESA telescope. The visuals were created by combining observations from 2016, 2018, and 2019, showcasing the dynamic atmosphere of this hot Jupiter, which has extreme temperatures over 3,000 Kelvins. The cyclones are thought to be caused by the temperature differences between the planet's dark side and its star-facing side.

via NewsNation Now|

##astronomy #cyclones

science-and-technology2 years ago•4 min saved

"Hubble Captures Extreme Weather on Remote Gas Giant"

The Hubble Space Telescope has observed extreme weather conditions on the hot Jupiter exoplanet WASP-121b, located 880 light-years away. The planet experiences intense cyclones and storms due to the significant temperature difference between its permanent day and night sides, with its atmosphere containing evaporated metals like iron and vanadium. These observations, combined with computer modeling, provide insights into the atmospheric dynamics of such exoplanets and could inform future studies of weather on smaller, potentially habitable worlds.

via Space.com|

##exoplanetweather #hotjupiter

science-and-technology2 years ago•7 min saved

"Hubble Tracks Transformations in Exoplanet Atmosphere Across Three Years"

NASA's Hubble Space Telescope has provided astronomers with a unique data set by observing the exoplanet WASP-121 b, also known as Tylos, over the years 2016, 2018, and 2019. These observations revealed that the exoplanet's atmosphere changes over time, with evidence of dynamic weather patterns such as massive cyclones. The close proximity of WASP-121 b to its host star results in extreme temperatures and phenomena like iron rain on the night side. The study, which combines observational data with computational modeling, marks a significant step in understanding weather on exoplanets and could aid in the search for habitable worlds.

via Phys.org|

##astronomy #atmosphericscience