Hot Jupiters as a research area focuses on close-in, gas giant exoplanets with orbital periods of a few days and strong stellar irradiation, used as laboratories for testing planet formation, migration, and atmospheric physics. Work in this field addresses mechanisms of inward migration (e.g., disk-driven vs. high-eccentricity pathways), tidal interactions, atmospheric escape, cloud and haze formation, chemical disequilibrium, and energy transport under extreme irradiation. Researchers combine transit, eclipse, and phase-curve observations with high-resolution spectroscopy and sophisticated radiative–convective and global circulation models to constrain compositions, temperature–pressure profiles, wind patterns, and the interaction of these planets with their host stars’ radiation and magnetic environments.
Apples-to-apples comparisons in the distant universe are hard to come by. Whether the subject is dwarf galaxies, supermassive black holes, or "hot Jupiters," astronomers can spend months or years searching for comparable ...
Astronomy
May 14, 2025
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Scientists from UNSW Sydney have located a potential new exoplanet—a planet that orbits a star outside of our solar system—using a technique known as "transit timing variation."
Planetary Sciences
Mar 5, 2025
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The planet WASP-121b is extreme. It's a gas giant almost twice as big as Jupiter orbiting extremely close to its star–50 times closer than the Earth does around the sun. WASP-121b is so close to its star that tidal forces ...
Planetary Sciences
Mar 1, 2025
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Astronomers have peered through the atmosphere of a planet beyond the solar system, mapping its 3D structure for the first time. By combining all four telescope units of the European Southern Observatory's Very Large Telescope ...
Planetary Sciences
Feb 18, 2025
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Nearly one third of known exoplanets are enormous gas giants, similar to Jupiter or Saturn. But whereas our solar system developed with gas giants far from our sun, some planetary systems consist of so-called 'hot—or even ...
Planetary Sciences
Jan 31, 2025
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Hot Jupiters are giant planets initially known to orbit alone close to their star. During their migration towards their star, these planets were thought to accrete or eject any other planets present. However, this paradigm ...
Planetary Sciences
Jan 15, 2025
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Potentially habitable exoplanets are so incredibly common that astronomers have started to consider more unusual situations where life might arise. Perhaps life can be found on the moon of a hot Jupiter or lingering in the ...
Astrobiology
Jan 3, 2025
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New research done at NASA's Jet Propulsion Laboratory reveals potential signs of a rocky, volcanic moon orbiting an exoplanet 635 light-years from Earth. The biggest clue is a sodium cloud that the findings suggest is close ...
Planetary Sciences
Oct 10, 2024
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