JWST maps distinct weather on distant hot gas giant

2026년 05월 21일

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Astronomers used the James Webb Space Telescope to study the atmosphere of WASP-94A b, a tidally locked gas giant 690 light-years away. The observations revealed cloudy mornings and clear evenings on the planet. The findings were published in Science.

A team led by Sagnick Mukherjee at Johns Hopkins University employed limb-resolved spectroscopy with JWST's NIRISS instrument. They split the transmission signals from the morning and evening limbs during the planet's transit, uncovering high-altitude aerosols on the morning side and water vapor on the evening side.

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JWST discovers water ice clouds on Jupiter-like exoplanet

Astronomers using the James Webb Space Telescope have detected thick water ice clouds on Epsilon Indi Ab, a cold gas giant resembling Jupiter. The finding, led by researchers at the Max Planck Institute for Astronomy, reveals less ammonia than expected in the planet's atmosphere. This challenges existing models and advances techniques for studying distant worlds.

JWST finds thick haze blocking view of super-puff exoplanet Kepler-51d

2026년 03월 19일 AI에 의해 보고됨

NASA's James Webb Space Telescope has observed an unusually thick haze on the exoplanet Kepler-51d, obscuring its atmospheric composition. This super-puff planet, part of a rare low-density system around the star Kepler-51, challenges standard models of planetary formation. The findings, led by Penn State researchers, were published on March 16 in the Astronomical Journal.

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James Webb telescope discovers distant jellyfish galaxy

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Scientists discover unusual inside-out planetary system

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Webb telescope images brain-shaped nebula around dying star

Unusual planet pair challenges traditional formation models

Astronomers have identified a rare planetary system 190 light-years from Earth featuring a hot Jupiter sharing its orbit with a mini-Neptune closer to the star. This configuration was once considered nearly impossible. New observations from the James Webb Space Telescope provide fresh insights into how the planets formed.

Hubble captures giant chaotic planet-forming disk

2026년 05월 12일 AI에 의해 보고됨

NASA's Hubble Space Telescope has imaged the largest known protoplanetary disk, revealing a turbulent and asymmetric structure around a young star. The disk, nicknamed Dracula's Chivito, stretches nearly 400 billion miles across and lies about 1,000 light-years from Earth.

2026년 05월 22일 20시 19분